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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-Q

 
⌧ | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended September 30, 2006
OR
 
☐ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from              to             
Commission file number 1-5975

HUMANA INC.
(Exact name of registrant as specified in its charter)

 
Delaware | | 61-0647538
(State or other jurisdiction of incorporation or organization) | | (I.R.S. Employer Identification Number)
500 West Main Street
Louisville, Kentucky 40202
(Address of principal executive offices, including zip code)
(502) 580-1000
(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934 during the preceding 12 months, and (2) has been subject to such filing requirements for the past 90 days. Yes     ⌧   No     ☐
Indicate by checkmark whether the registrant is a large accelerated filer, an accelerated filer or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act: (Check one):
Large accelerated filer  ⌧    Accelerated filer  ☐    Non-accelerated filer  ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes  ☐    No  ⌧
Indicate the number of shares outstanding of each of the issuer’s classes of common stock as of the latest practicable date.
 
Class of Common Stock | | Outstanding at September 30, 2006
$0.16 ^2/3 par value | | 166,228,458 shares

Table of Contents
Humana Inc.
FORM 10-Q
SEPTEMBER 30, 2006
INDEX
 
| | | | Page
| | Part I: Financial Information | |
Item 1. | | Financial Statements | |
| | Condensed Consolidated Balance Sheets at September 30, 2006 and December 31, 2005 | | 3
| | Condensed Consolidated Statements of Income for the three and nine months ended September 30, 2006 and 2005 | | 4
| | Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2006 and 2005 | | 5
| | Notes to Condensed Consolidated Financial Statements | | 6
Item 2. | | Management’s Discussion and Analysis of Financial Condition and Results of Operations | | 19
Item 3. | | Quantitative and Qualitative Disclosures about Market Risk | | 32
Item 4. | | Controls and Procedures | | 32
| | Part II: Other Information | |
Item 1. | | Legal Proceedings | | 33
Item 1A. | | Risk Factors | | 33
Item 2. | | Unregistered Sales of Equity Securities and Use of Proceeds | | 33
Item 3. | | Defaults Upon Senior Securities | | 33
Item 6. | | Exhibits | | 34
| | Signatures and Certifications | | 35
 
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Humana Inc.
CONDENSED CONSOLIDATED BALANCE SHEETS
(Unaudited)
 
| | September 30, 2006 | | | December 31, 2005 |
| | (in thousands, except share amounts) |
ASSETS | | | | | | | |
Current assets: | | | | | | | |
Cash and cash equivalents | | $ | 1,181,234 | | | $ | 732,016 |
Investment securities | | | 3,242,711 | | | | 2,354,904 |
Receivables, less allowance for doubtful accounts of $50,163 in 2006 and $32,557 in 2005: | | | | | | | |
Premiums | | | 729,949 | | | | 723,190 |
Administrative services fees | | | 15,055 | | | | 15,462 |
Securities lending collateral | | | 917,325 | | | | 47,610 |
Other current assets | | | 1,066,731 | | | | 333,004 |
Total current assets | | | 7,153,005 | | | | 4,206,186 |
Property and equipment, net | | | 518,930 | | | | 484,412 |
Other assets: | | | | | | | |
Long-term investment securities | | | 408,281 | | | | 391,035 |
Goodwill | | | 1,307,231 | | | | 1,264,575 |
Other long-term assets | | | 569,718 | | | | 523,406 |
Total other assets | | | 2,285,230 | | | | 2,179,016 |
Total assets | | $ | 9,957,165 | | | $ | 6,869,614 |
LIABILITIESAND STOCKHOLDERS’ EQUITY | | | | | | | |
Current liabilities: | | | | | | | |
Medical and other expenses payable | | $ | 2,562,943 | | | $ | 1,909,682 |
Trade accounts payable and accrued expenses | | | 1,528,991 | | | | 560,550 |
Book overdraft | | | 281,244 | | | | 280,005 |
Securities lending payable | | | 917,325 | | | | 47,610 |
Unearned revenues | | | 146,320 | | | | 120,489 |
Current portion of long-term debt | | | — | | | | 301,254 |
Total current liabilities | | | 5,436,823 | | | | 3,219,590 |
Long-term debt | | | 970,144 | | | | 513,790 |
Other long-term liabilities | | | 657,735 | | | | 627,360 |
Total liabilities | | | 7,064,702 | | | | 4,360,740 |
Commitments and contingencies | | | | | | | |
Stockholders’ equity: | | | | | | | |
Preferred stock, $1 par; 10,000,000 shares authorized; none issued | | | — | | | | — |
Common stock, $0.16 2/3 par; 300,000,000 shares authorized; 182,346,635 shares issued at September 30, 2006 and 179,062,807 shares issued at December 31, 2005 | | | 30,391 | | | | 29,843 |
Capital in excess of par value | | | 1,333,503 | | | | 1,235,888 |
Retained earnings | | | 1,754,077 | | | | 1,421,675 |
Accumulated other comprehensive (loss) income | | | (6,574 | ) | | | 24,832 |
Treasury stock, at cost, 16,118,177 shares at September 30, 2006 and 15,846,384 shares at December 31, 2005 | | | (218,934 | ) | | | (203,364 | )
Total stockholders’ equity | | | 2,892,463 | | | | 2,508,874 |
Total liabilities and stockholders’ equity | | $ | 9,957,165 | | | $ | 6,869,614 |
See accompanying notes to condensed consolidated financial statements.
 
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Humana Inc.
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
(Unaudited)
 
| | Three months ended September 30, | | Nine months ended September 30,
| | 2006 | | 2005 | | 2006 | | 2005
| | (in thousands, except per share results)
Revenues: | | | | | | | | | | | |
Premiums | | $ | 5,486,368 | | $ | 3,712,364 | | $ | 15,272,329 | | $ | 10,449,198
Administrative services fees | | | 86,332 | | | 66,072 | | | 248,721 | | | 196,240
Investment income | | | 62,474 | | | 38,778 | | | 211,943 | | | 100,120
Other revenue | | | 14,610 | | | 4,247 | | | 28,325 | | | 9,489
Total revenues | | | 5,649,784 | | | 3,821,461 | | | 15,761,318 | | | 10,755,047
Operating expenses: | | | | | | | | | | | |
Medical | | | 4,616,002 | | | 3,094,397 | | | 12,879,429 | | | 8,736,639
Selling, general and administrative | | | 729,722 | | | 616,126 | | | 2,204,471 | | | 1,586,085
Depreciation and amortization | | | 37,677 | | | 34,119 | | | 109,179 | | | 95,131
Total operating expenses | | | 5,383,401 | | | 3,744,642 | | | 15,193,079 | | | 10,417,855
Income from operations | | | 266,383 | | | 76,819 | | | 568,239 | | | 337,192
Interest expense | | | 17,009 | | | 10,141 | | | 47,335 | | | 28,986
Income before income taxes | | | 249,374 | | | 66,678 | | | 520,904 | | | 308,206
Provision for income taxes | | | 90,176 | | | 19,871 | | | 188,502 | | | 73,252
Net income | | $ | 159,198 | | $ | 46,807 | | $ | 332,402 | | $ | 234,954
Basic earnings per common share | | $ | 0.97 | | $ | 0.29 | | $ | 2.03 | | $ | 1.45
Diluted earnings per common share | | $ | 0.95 | | $ | 0.28 | | $ | 1.98 | | $ | 1.42
See accompanying notes to condensed consolidated financial statements.
 
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Humana Inc.
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited)

For the nine months ended
September 30,

| | 2006 | | | 2005 |
| | (in thousands) |
Cash flows from operating activities | | | | | | | |
Net income | | $ | 332,402 | | | $ | 234,954 |
Adjustments to reconcile net income to net cash provided by operating activities: | | | | | | | |
Depreciation and amortization | | | 109,179 | | | | 95,131 |
Gain on sale of investment securities, net | | | (60,435 | ) | | | (9,300 | )
Stock-based compensation | | | 24,401 | | | | 22,437 |
Provision (benefit) for deferred income taxes | | | 22,269 | | | | (29,223 | )
Changes in operating assets and liabilities, excluding the effects of acquisitions: | | | | | | | |
Receivables | | | (5,509 | ) | | | (129,236 | )
Other assets | | | (389,013 | ) | | | (31,287 | )
Medical and other expenses payable | | | 632,063 | | | | 357,841 |
Other liabilities | | | 465,993 | | | | (20,629 | )
Unearned revenues | | | 20,892 | | | | 367,809 |
Other, net | | | (431 | ) | | | 2,369 |
Net cash provided by operating activities | | | 1,151,811 | | | | 860,866 |
Cash flows from investing activities | | | | | | | |
Acquisitions, net of cash acquired | | | (26,362 | ) | | | (352,816 | )
Purchases of property and equipment | | | (136,602 | ) | | | (112,318 | )
Proceeds from sales of property and equipment | | | 9,452 | | | | 2,648 |
Purchases of investment securities | | | (3,505,391 | ) | | | (1,694,123 | )
Maturities of investment securities | | | 1,478,017 | | | | 596,276 |
Proceeds from sales of investment securities | | | 1,219,555 | | | | 992,420 |
Change in securities lending collateral | | | (869,715 | ) | | | (39,713 | )
Net cash used in investing activities | | | (1,831,046 | ) | | | (607,626 | )
Cash flows from financing activities | | | | | | | |
Receipts from CMS contract deposits | | | 1,427,849 | | | | — |
Withdrawals from CMS contract deposits | | | (1,370,862 | ) | | | — |
Borrowings under credit agreement | | | 250,000 | | | | 294,000 |
Repayments under credit agreement | | | (300,000 | ) | | | (294,000 | )
Proceeds from issuance of senior notes | | | 498,545 | | | | — |
Repayments of senior notes | | | (300,000 | ) | | | — |
Debt issue costs | | | (5,796 | ) | | | — |
Change in book overdraft | | | 1,239 | | | | 66,373 |
Change in securities lending payable | | | 869,715 | | | | 39,713 |
Common stock repurchases | | | (15,570 | ) | | | (2,071 | )
Tax benefit from stock-based compensation | | | 30,791 | | | | 11,258 |
Proceeds from stock option exercises and other | | | 42,542 | | | | 30,344 |
Net cash provided by financing activities | | | 1,128,453 | | | | 145,617 |
Increase in cash and cash equivalents | | | 449,218 | | | | 398,857 |
Cash and cash equivalents at beginning of period | | | 732,016 | | | | 580,079 |
Cash and cash equivalents at end of period | | $ | 1,181,234 | | | $ | 978,936 |
Supplemental cash flow disclosures: | | | | | | | |
Interest payments | | $ | 51,403 | | | $ | 33,903 |
Income tax payments, net | | $ | 98,557 | | | $ | 125,574 |
See accompanying notes to condensed consolidated financial statements.
 
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Humana Inc.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
Unaudited
(1) Basis of Presentation
The accompanying condensed consolidated financial statements are presented in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures normally required by accounting principles generally accepted in the United States of America, or those normally made in an Annual Report on Form 10-K. For further information, the reader of this Form 10-Q should refer to our Form 10-K for the year ended December 31, 2005, that was filed with the Securities and Exchange Commission, or the SEC, on March 3, 2006 and our Form 8-K that was filed with the SEC on May 24, 2006. References throughout this document to “we,” “us,” “our,” “Company,” and “Humana,” mean Humana Inc. and its subsidiaries.
We adopted Statement of Financial Accounting Standards (SFAS) No. 123 (revised 2004), Share-Based Payment, or SFAS 123R on January 1, 2006. We have adjusted prior period amounts to reflect the effect of expensing stock awards under the modified retrospective application method of SFAS 123R as discussed in Note 6 of the condensed consolidated financial statements.
The preparation of our condensed consolidated financial statements in accordance with accounting principles generally accepted in the United States of America requires us to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. The areas involving the most significant use of estimates are the estimation of medical expenses payable, the impact of risk sharing provisions related to our Medicare and TRICARE contracts, the valuation and related impairment recognition of investment securities, and the valuation and related impairment recognition of long-lived assets, including goodwill. These estimates are based on knowledge of current events and anticipated future events, and accordingly, actual results may ultimately differ materially from those estimates. Refer to “Significant Accounting Policies” in Humana’s 2005 Annual Report on Form 10-K for information on accounting policies that the Company considers in preparing its consolidated financial statements.
The financial information has been prepared in accordance with our customary accounting practices and has not been audited. In our opinion, the information presented reflects all adjustments necessary for a fair statement of interim results. All such adjustments are of a normal and recurring nature.
(2) Significant Accounting Policies
Accounting for Prescription Drug Benefits under Medicare Part D
On January 1, 2006, we began covering prescription drug benefits in accordance with Medicare Part D, in addition to medical benefits under Medicare Parts A and B, for nearly all of our Medicare Advantage members. We refer to these members as Medicare Advantage or MA-PD. In addition, we began covering prescription drugs in accordance with Medicare Part D as a stand-alone benefit to Medicare eligible beneficiaries. We refer to these members as stand-alone PDP or PDP.
In general, pharmacy benefits under PDPs and MA-PD plans (collectively referred to as “Part D plans”) may vary in terms of coverage levels and out-of-pocket costs for beneficiary premiums, deductibles and co-insurance. However, all Part D plans must offer either “standard coverage” or its actuarial equivalent (with out-of-pocket threshold and deductible amounts that do not exceed those of standard coverage). These “defined standard” benefits represent the minimum level of benefits mandated by Congress. In addition to defined standard plans, we offer other prescription drug plans containing benefits in excess of the standard coverage limits, in many cases for an additional beneficiary premium.
The payment we receive monthly from the Centers for Medicare and Medicaid Services, or CMS, generally represents our bid amount for providing prescription drug insurance coverage. We recognize premium revenue for providing this insurance coverage ratably over the term of our annual contract. However, our CMS payment is subject to 1) risk corridor adjustments and 2) subsidies in order for Humana and CMS to share the risk associated with financing the ultimate costs of the Part D benefit.
The amount of revenue payable to a plan by CMS is subject to adjustment, positive or negative, based upon the application of risk corridors that compare a plan’s revenues targeted in their bids (“target amount’) to actual prescription drug costs. Variances exceeding certain thresholds may result in CMS making additional payments to
 
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Humana Inc.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)
Unaudited
us or require us to refund to CMS a portion of the premiums we received. Actual prescription drug costs subject to risk sharing with CMS are limited to the costs that are, or would have been, incurred under the CMS “defined standard” benefit plan (“allowable risk corridor costs”). We estimate and recognize an adjustment to premium revenues related to the risk corridor payment adjustment based upon pharmacy claims experience to date as if the annual contract were to terminate at the end of each reporting period. Accordingly, this estimate provides no consideration to future pharmacy claims experience.
Certain subsidies represent reimbursements from CMS for claims we paid for which we assume no risk, including reinsurance payments and low-income cost subsidies. Claims paid for catastrophic coverage above the out-of-pocket threshold for which we are not at risk are all reimbursed by CMS through the reinsurance subsidy for PDP and MA-PD plans offering the standard coverage. Low-income cost subsidies represent reimbursements from CMS for all or a portion of the deductible, the coinsurance and the co-payment amounts for low-income beneficiaries. We account for these subsidies as a deposit in our condensed consolidated balance sheets and as a financing activity in our condensed consolidated statements of cash flows. We do not recognize premium revenue or claims expense for these subsidies. Receipt and payment activity is accumulated at the contract level and recorded to the balance sheet in other current assets or trade accounts payable and accrued expenses depending on the net contract balance at the end of the reporting period. We received subsidies from CMS in excess of related withdrawals for claims paid of $57.0 million for the nine months ended September 30, 2006.
We recognize pharmacy benefit costs, net of rebates, as incurred. We have subcontracted the pharmacy claims administration to a third party pharmacy benefit manager.
Recently Issued Accounting Pronouncements
In July 2006, the Financial Accounting Standards Board, or FASB, issued FASB Interpretation No. 48, Accounting for Uncertainty in Income Taxes-an Interpretation of  FASB Statement 109 , or FIN 48. FIN 48 prescribes a comprehensive model for how a company should recognize, measure, present, and disclose in its financial statements uncertain tax positions that the company has taken or expects to take on a tax return. FIN 48 also revises disclosure requirements and introduces a prescriptive, annual, tabular roll-forward of the unrecognized tax benefits. FIN 48, which will become effective for us beginning January 1, 2007, requires the change in net assets that results from the application of the new accounting model to be reflected as an adjustment to retained earnings. We currently are evaluating the impact of the adoption of FIN 48, however it is not expected to have a material impact on our financial position or results of operations.
In September 2006, the FASB issued Statement of Financial Accounting Standards (SFAS) No. 158, Employers’ Accounting for Defined Benefit Pension and Other Postretirement Plans , or SFAS 158. We are required to adopt SFAS 158 prospectively in the fourth quarter of 2006 for the year ending December 31, 2006. SFAS 158 requires an employer to recognize the overfunded or underfunded status of a defined benefit postretirement plan (other than a multiemployer plan) as an asset or liability in its statement of financial position, and to recognize changes in that funded status in the year in which the changes occur through comprehensive income. SFAS 158 also requires an employer to measure the funded status of a plan as of the date of its year-end statement of financial position and revises certain disclosure requirements. The benefit obligation is defined as the projected benefit obligation for pension plans and as the accumulated postretirement benefit obligation for any other postretirement benefit plan, such as a retiree health care plan. The impact of adopting SFAS 158 will not be material to our financial position or results of operations.
In September 2006, the FASB issued SFAS No. 157, Fair Value Measurements, or SFAS 157. SFAS 157 defines fair value, establishes a framework for measuring fair value, and expands disclosures about fair value measurements. SFAS 157 does not require new fair value measurements. We are required to adopt SFAS 157 in the first quarter of 2008. We currently are evaluating the provisions of SFAS 157, however we do not expect the adoption of SFAS 157 will have a material impact on our financial position or results of operations.
(3) Acquisitions
On May 1, 2006, our Commercial segment acquired CHA Service Company, or CHA Health, a health plan serving employer groups in Kentucky, for cash consideration of approximately $65.8 million including estimated transaction costs. This acquisition strengthens our position in the Kentucky market. The purchase price is subject to an adjustment primarily based on the outcome of a six-month claims settlement period. Claims that ultimately settle
 
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Humana Inc.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)
Unaudited
favorably or unfavorably to the opening balance sheet estimate will result in a purchase price adjustment. Our preliminary estimate of net tangible assets acquired of $20.0 million primarily consisted of cash and cash equivalents. The purchase price exceeded the estimated fair value of the net tangible assets acquired by approximately $45.8 million. We allocated this excess purchase price to other intangible assets of $12.2 million and associated deferred tax liabilities of $4.6 million, and non-deductible goodwill of $38.2 million. The other intangible assets, which consist primarily of customer contracts, have a weighted average useful life of 6.8 years.
The results of operations and financial condition of CHA Health have been included in our condensed consolidated statements of income and condensed consolidated balance sheets from the acquisition date. The pro forma financial information assuming the acquisition of CHA Health had occurred as of the beginning of each respective period was not material to our results of operations.
(4) Goodwill and Other Intangible Assets
Changes in the carrying amount of goodwill, by operating segment, for the nine months ended September 30, 2006 were as follows:
 
| | Commercial | | Government | | Total
| | (in thousands)
Balance at December 31, 2005 | | $ | 741,260 | | $ | 523,315 | | $ | 1,264,575
CHA Health acquisition | | | 38,212 | | | — | | | 38,212
Contingent purchase price settlements related to: | | | | | | | | |
Prior years acquisitions | | | 3,244 | | | 1,200 | | | 4,444
Balance at September 30, 2006 | | $ | 782,716 | | $ | 524,515 | | $ | 1,307,231
The following table presents details of our other intangible assets included in other long-term assets in the accompanying condensed consolidated balance sheets at September 30, 2006 and December 31, 2005:
 
| | Weighted Average Life at 9/30/06 | | September 30, 2006 | | December 31, 2005 |
| | | | Cost | | Accumulated Amortization | | Net | | Cost | | Accumulated Amortization | | Net |
| | (in thousands) |
Other intangible assets: | | | | | | | | | | | | | | | | | | | | |
Subscriber contracts | | 10.2 yrs | | $ | 114,944 | | $ | 32,143 | | $ | 82,801 | | $ | 103,251 | | $ | 18,483 | | $ | 84,768 |
Provider contracts | | 14.5 yrs | | | 11,500 | | | 1,810 | | | 9,690 | | | 10,300 | | | 1,202 | | | 9,098 |
Licenses and other | | 16.7 yrs | | | 11,602 | | | 3,625 | | | 7,977 | | | 12,890 | | | 2,741 | | | 10,149 |
Total other intangible assets | | 11.0 yrs | | $ | 138,046 | | $ | 37,578 | | $ | 100,468 | | $ | 126,441 | | $ | 22,426 | | $ | 104,015 |
Amortization expense for other intangible assets was approximately $15.2 million for the nine months ended September 30, 2006 and $18.8 million for the nine months ended September 30, 2005. The following table presents our estimate of amortization expense for the remaining three months of 2006 and for each of the five next succeeding fiscal years:
 
| | (in thousands)
For the three month period ending December 31, 2006 | | $ | 4,823
For the years ending December 31, | | |
2007 | | $ | 16,989
2008 | | $ | 14,076
2009 | | $ | 10,096
2010 | | $ | 9,511
2011 | | $ | 9,440
 
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Humana Inc.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)
Unaudited
(5) Comprehensive Income
The following table presents details supporting the computation of comprehensive income for the three and nine months ended September 30, 2006 and 2005:
 
| | Three months ended September 30, | | | Nine months ended September 30, |
| | 2006 | | 2005 | | | 2006 | | | 2005 |
| | (in thousands) |
Net income | | $ | 159,198 | | $ | 46,807 | | | $ | 332,402 | | | $ | 234,954 |
Change in net unrealized investment gains (losses), net of tax | | | 36,778 | | | (16,619 | ) | | | (31,406 | ) | | | (20,030 | )
Comprehensive income, net of tax | | $ | 195,976 | | $ | 30,188 | | | $ | 300,996 | | | $ | 214,924 |
(6) Stock-based Compensation Plans
We have plans under which options to purchase our common stock and restricted stock awards have been granted to executive officers, directors, key employees and consultants. The terms and vesting schedules for stock-based awards vary by type of grant. Generally, the awards vest upon time-based conditions. Upon exercise, stock-based compensation awards are generally settled with authorized but unissued company stock. The compensation expense that has been charged against income for these plans was as follows for the three and nine months ended September 30, 2006 and 2005:
 
| | For the three months ended September 30, | | | For the nine months ended September 30, |
| | 2006 | | | 2005 | | | 2006 | | | 2005 |
| | (in thousands) |
Stock-based compensation expense by type: | | | | | | | | | | | | | | | |
Stock options | | $ | 4,109 | | | $ | 6,395 | | | $ | 13,473 | | | $ | 17,937 |
Restricted stock awards | | | 5,241 | | | | 1,672 | | | | 10,928 | | | | 4,500 |
Total stock-based compensation expense | | | 9,350 | | | | 8,067 | | | | 24,401 | | | | 22,437 |
Tax benefit recognized | | | (3,462 | ) | | | (3,034 | ) | | | (9,013 | ) | | | (8,437 | )
Stock-based compensation expense, net of tax | | $ | 5,888 | | | $ | 5,033 | | | $ | 15,388 | | | $ | 14,000 |
A greater proportion of the awards granted to employees, excluding executive officers, during 2006 were restricted stock awards as opposed to stock options when compared to grants made in prior years.
The tax benefit recognized in our condensed consolidated financial statements is based on the amount of compensation expense recorded for book purposes. The actual tax benefit realized in our tax return is based on the intrinsic value, or the excess of the market value over the exercise or purchase price, of stock options exercised and restricted stock awards vested during the period. The actual tax benefit realized for the deductions taken on our tax returns from option exercises and restricted stock vesting totaled $38.6 million and $16.9 million for the nine months ended September 30, 2006 and 2005, respectively. There was no capitalized stock-based compensation expense.
At September 30, 2006, there were 20,121,456 shares reserved for stock award plans, including 12,253,904 shares of common stock available for future grants.
Stock Options
Stock options are granted with an exercise price equal to the average market value of the underlying common stock on the date of grant. Our stock plans define average market value as the average of the highest and lowest stock prices reported by the New York Stock Exchange on a given date. Exercise provisions vary, but most options vest in whole or in part 1 to 3 years after grant and expire 7 to 10 years after grant. Upon grant, stock options are assigned a fair value based on the Black-Scholes valuation model. Compensation expense is recognized on a straight-line basis over the total requisite service period, generally the total vesting period, for the entire award.
 
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Humana Inc.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)
Unaudited
The weighted average fair value of each option granted during the three and nine months ended September 30, 2006 and 2005 is provided below. The fair value was estimated on the date of grant using the Black-Scholes pricing model with the weighted average assumptions indicated below:
 
| | For the three months ended September 30, | | | For the nine months ended September 30, |
| | 2006 | | | 2005 | | | 2006 | | | 2005 |
Weighted average fair value at grant date | | $ | 19.86 | | | $ | 16.17 | | | $ | 19.13 | | | $ | 12.88 |
Expected option life (years) | | | 4.3 | | | | 4.6 | | | | 4.9 | | | | 5.0 |
Expected volatility | | | 30.3 | % | | | 33.4 | % | | | 31.8 | % | | | 37.3 | %
Risk-free interest rate | | | 4.7 | % | | | 4.0 | % | | | 4.6 | % | | | 3.9 | %
Dividend yield | | | None | | | | None | | | | None | | | | None |
When valuing employee stock options, we stratify the employee population into homogenous groups that historically have exhibited similar exercise behaviors. These groups include executive officers, directors, and all other employees. We value the stock options based on the unique assumptions for each of these employee groups.
We calculate the expected term for our employee stock options based on historical employee exercise behavior. The increase in our stock price in recent years and reduction of the contractual term from 10 years to 7 years has led to a pattern of earlier exercise by employees, therefore contributing to the gradual decline in the average expected term over the last few years.
The volatility used to value employee stock options is based on historical volatility. We calculate historical volatility using a simple average calculation methodology based on daily price intervals as measured over the expected term of the option. We have consistently applied this methodology since our adoption of the disclosure provisions of SFAS 123. The decrease in the historical volatility used to value our employee stock options is due to changes in the stock price pattern over the past several years.
We base the risk-free interest rate on a traded zero-coupon U.S. Treasury bond with a term substantially equal to the option’s expected term.
Activity for our option plans was as follows for the nine months ended September 30, 2006:
 
| | Shares Under Option | | | Weighted Average Exercise Price
Options outstanding at December 31, 2005 | | 9,661,758 | | | $ | 19.50
Granted | | 934,412 | | | | 53.71
Exercised | | (2,624,659 | ) | | | 16.38
Forfeited | | (128,830 | ) | | | 20.14
Expired | | — | | | | —
Options outstanding at September 30, 2006 | | 7,842,681 | | | $ | 24.61
 
| | Shares Under Option | | Weighted Average Exercise Price | | Weighted Average Remaining Contractual Term | | Aggregate Intrinsic Value Per Share ^(1) | | Aggregate Intrinsic Value ($000) ^(1)
Options exercisable at September 30, 2006 | | 4,358,240 | | $ | 16.22 | | 4.9 Years | | $ | 49.26 | | $ | 214,686
Options vested and expected to vest as of September 30, 2006^(2) | | 7,778,637 | | $ | 24.49 | | 5.3 Years | | $ | 40.99 | | $ | 318,893

(1) | Computed based upon the amount by which the fair market value of our common stock at September 30, 2006 of $65.48 per share exceeded the weighted average exercise price.
(2) | We began estimating forfeitures under SFAS 123R upon adoption on January 1, 2006.
 
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Humana Inc.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)
Unaudited
The total intrinsic value of stock options exercised during the three months ended September 30, 2006 was $54.0 million, compared with $16.1 million during the three months ended September 30, 2005. The total intrinsic value of stock options exercised during the nine months ended September 30, 2006 was $99.6 million, compared with $43.1 million during the nine months ended September 30, 2005. Cash received from stock option exercises for the nine months ended September 30, 2006 and 2005 totaled $43.0 million and $29.6 million, respectively.
Total compensation expense related to nonvested options not yet recognized was $22.6 million at September 30, 2006. We expect to recognize this compensation expense over a weighted average period of approximately 1.8 years.
Restricted Stock Awards
Restricted stock awards are granted with a fair value equal to the average market price of our common stock on the date of grant. Compensation expense is recorded straight-line over the vesting period, generally three years from the date of grant.
The weighted average grant date fair value of our restricted stock awards was $60.86 and $54.33 for the three and nine months ended September 30, 2006, respectively, and $32.36 for the nine months ended September 30, 2005. There were no restricted stock awards granted for the three months ended September 30, 2005. Activity for our restricted stock awards was as follows for the nine months ended September 30, 2006:
 
| | Shares | | | Weighted Average Grant-Date Fair Value
Nonvested restricted stock at December 31, 2005 | | 489,300 | | | $ | 32.92
Granted | | 693,784 | | | | 54.33
Vested | | (32,642 | ) | | | 60.18
Forfeited | | (43,638 | ) | | | 38.64
Nonvested restricted stock at September 30, 2006 | | 1,106,804 | | | $ | 45.31
The fair value of shares vested during the three months ended September 30, 2006 was $1.8 million. No awards vested during the three months ended September 30, 2005. The fair value of shares vested during the nine months ended September 30, 2006 was $2.0 million compared with $0.9 million for the nine months ended September 30, 2005. Total compensation expense related to nonvested restricted stock awards not yet recognized was $29.2 million at September 30, 2006. We expect to recognize this compensation expense over a weighted average period of approximately 2.0 years. There are no other contractual terms covering restricted stock awards once vested.
Restrospective Application
We adopted SFAS 123R effective January 1, 2006. In accordance with the modified retrospective application method, we have adjusted previously reported results to reflect the effect of expensing stock awards. The cumulative effect adjustment for a change in accounting principle relating to the estimate of forfeitures on all unvested awards at January 1, 2006 was immaterial and is included in compensation expense for the nine months ended September 30, 2006. The following table illustrates the effect of the retrospective application on the beginning balances of the specified balance sheet accounts as if the fair value method described in SFAS 123R had been applied to all prior years for which the original provisions of SFAS 123 were effective.
 
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Humana Inc.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)
Unaudited

As of
December 31,
2005

| | (in thousands) |
Other long-term liabilities (net deferred tax liability), before adoption | | $ | 662,129 |
Adjustment for SFAS 123 | | | (34,769 | )
Other long-term liabilities (net deferred tax liability), after adoption | | $ | 627,360 |
Capital in excess of par value, before adoption | | $ | 1,098,117 |
Adjustment for SFAS 123 | | | 137,771 |
Capital in excess of par value, after adoption | | $ | 1,235,888 |
Retained earnings, before adoption | | $ | 1,538,306 |
Adjustment for SFAS 123 | | | (116,631 | )
Retained earnings, after adoption | | $ | 1,421,675 |
The effect of the retrospective adoption of SFAS 123R on the consolidated statements of income and cash flows for the periods presented is as follows:
 
| | For the three months ended September 30, 2005 | | | For the nine months ended September 30, 2005 |
| | (in thousands, except per share results) |
Income from operations, before adoption | | $ | 81,645 | | | $ | 351,484 |
Adjustment for SFAS 123 | | | (4,826 | ) | | | (14,292 | )
Income from operations, after adoption | | $ | 76,819 | | | $ | 337,192 |
Income before income taxes, before adoption | | $ | 71,504 | | | $ | 322,498 |
Adjustment for SFAS 123 | | | (4,826 | ) | | | (14,292 | )
Income before income taxes, after adoption | | $ | 66,678 | | | $ | 308,206 |
Net income, before adoption | | $ | 49,944 | | | $ | 243,876 |
Adjustment for SFAS 123 | | | (3,137 | ) | | | (8,922 | )
Net income, after adoption | | $ | 46,807 | | | $ | 234,954 |
Basic earnings per common share, before adoption | | $ | 0.31 | | | $ | 1.51 |
Adjustment for SFAS 123 | | | (0.02 | ) | | | (0.06 | )
Basic earnings per common share, after adoption | | $ | 0.29 | | | $ | 1.45 |
Diluted earnings per common share, before adoption | | $ | 0.30 | | | $ | 1.48 |
Adjustment for SFAS 123 | | | (0.02 | ) | | | (0.06 | )
Diluted earnings per common share, after adoption | | $ | 0.28 | | | $ | 1.42 |
Net cash provided by operating activities, before adoption | | | | | | $ | 872,124 |
Adjustment for SFAS 123 | | | | | | | (11,258 | )
Net cash provided by operating activities, after adoption | | | | | | $ | 860,866 |
Net cash provided by financing activities, before adoption | | | | | | $ | 134,359 |
Adjustment for SFAS 123 | | | | | | | 11,258 |
Net cash provided by financing activities, after adoption | | | | | | $ | 145,617 |
 
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Humana Inc.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)
Unaudited
(7) Earnings Per Common Share
The following table provides details supporting the computation of basic and diluted earnings per common share for the three and nine months ended September 30, 2006 and 2005:
 
| | Three months ended September 30, | | Nine months ended September 30,
| | 2006 | | 2005 | | 2006 | | 2005
| | (in thousands, except per share results)
Net income available for common stockholders | | $ | 159,198 | | $ | 46,807 | | $ | 332,402 | | $ | 234,954
Weighted average outstanding shares of common stock used to compute basic earnings per common share | | | 164,387 | | | 162,048 | | | 163,736 | | | 161,484
Dilutive effect of: | | | | | | | | | | | |
Employee stock options | | | 3,606 | | | 3,891 | | | 3,732 | | | 3,686
Restricted stock | | | 383 | | | 137 | | | 278 | | | 70
Shares used to compute diluted earnings per common share | | | 168,376 | | | 166,076 | | | 167,746 | | | 165,240
Basic earnings per common share | | $ | 0.97 | | $ | 0.29 | | $ | 2.03 | | $ | 1.45
Diluted earnings per common share | | $ | 0.95 | | $ | 0.28 | | $ | 1.98 | | $ | 1.42
Number of antidilutive stock options and restricted stock excluded from computation | | | 911 | | | 94 | | | 817 | | | 1,041
(8) Income Taxes
The effective income tax rate was 36.2% for the three and nine months ended September 30, 2006 compared to 29.8% for the three months ended September 30, 2005 and 23.8% for the nine months ended September 30, 2005. The higher effective tax rate for the three months ended September 30, 2006 reflects the growth in pretax income outpacing the growth in tax-exempt investment income. The higher effective tax rate for the nine months ended September 30, 2006 is primarily due to the resolution of a contingent gain of $22.8 million in the first quarter of 2005 in connection with the expiration of the statute of limitations on an uncertain tax position related to the 2000 tax year which did not recur in 2006.
 
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Humana Inc.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)
Unaudited
(9) Long-term Debt
Long-term debt outstanding was as follows at September 30, 2006 and December 31, 2005:
 
| | September 30, 2006 | | December 31, 2005
| | (in thousands)
Long-term debt: | | | | | |
7.25% senior, unsecured notes due Aug. 1, 2006, net of unamortized discount of $86 at December 31, 2005 | | $ | — | | $ | 299,914
6.30% senior, unsecured notes due Aug. 1, 2018, net of unamortized discount of $680 at September 30, 2006 and $724 at December 31, 2005 | | | 299,320 | | | 299,276
6.45% senior, unsecured notes due June 1, 2016, net of unamortized discount of $1,420 at September 30, 2006 | | | 498,580 | | | —
Fair value of interest rate swap agreements | | | 19,044 | | | 6,084
Deferred gain from interest rate swap exchange | | | — | | | 6,131
Total senior notes | | | 816,944 | | | 611,405
Credit agreement | | | 150,000 | | | 200,000
Other long-term borrowings | | | 3,200 | | | 3,639
Total debt | | | 970,144 | | | 815,044
Less: Current portion of long-term debt | | | — | | | 301,254
Total long-term debt | | $ | 970,144 | | $ | 513,790
Senior Notes
In May 2006, we issued $500 million of 6.45% senior notes due June 1, 2016. Our net proceeds, reduced for the discount and cost of the offering, were $494.4 million. We used a portion of these net proceeds from the offering for the repayment of the outstanding balance under our credit agreement, which at the time of the issuance was $200 million, and the repayment of our 7.25% senior notes which matured on August 1, 2006.
Swap Agreements
In order to hedge the risk of changes in the fair value of all our senior notes attributable to fluctuations in interest rates, we entered into interest rate swap agreements. Interest rate swap agreements, which are considered derivatives, are contracts that exchange interest payments on a specified principal amount, or notional amount, for a specified period. Our interest rate swap agreements exchange the fixed interest rate under all our senior notes for a variable interest rate based on LIBOR. At September 30, 2006, the weighted average effective interest rate for all of our senior notes was 6.28%.
The interest rate swap agreements, which have the same critical terms as our senior notes, are designated as fair value hedges. Changes in the fair value of the senior notes and the swap agreements due to changing interest rates are assumed to offset each other completely, resulting in no impact to earnings from hedge ineffectiveness. Our swap agreements are recognized in our condensed consolidated balance sheets at fair value with an equal and offsetting adjustment to the carrying value of our senior notes. The fair value of our interest rate swap agreements are estimated based on quoted market prices of comparable agreements, and reflect the amounts we would receive (or pay) to terminate the agreements at the reporting date.
At September 30, 2006, the fair value of all our swap agreements was in our favor by $19.0 million and included in other long-term assets. Likewise, the carrying values of all of our senior notes have been increased $19.0 million to reflect their fair values. The counterparties to our swap agreements are major financial institutions with which we also have other financial relationships.
In June 2003, we recorded a deferred gain and received proceeds of $31.6 million in exchange for new swap agreements discussed above related to our 7.25% senior notes. The corresponding deferred swap gain of $31.6 million was being amortized to reduce interest expense over the remaining term of the 7.25% senior notes which matured August 1, 2006. Amortization of the deferred swap gain reduced interest expense by $0.9 million and $2.6 million for the three months ended September 30, 2006 and 2005, respectively. Amortization of the deferred swap gain reduced interest expense by $6.1 million and $7.6 million for the nine months ended September 30, 2006 and 2005, respectively.
 
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Humana Inc.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)
Unaudited
Credit Agreement
On July 14, 2006, we replaced our existing 5-year $600 million unsecured revolving credit agreement (“old credit agreement”) with a new 5-year $1.0 billion unsecured revolving credit agreement (“new credit agreement”). We entered into the new credit agreement for general corporate purposes. Under the new credit agreement, at our option, we can borrow on either a competitive advance basis or a revolving credit basis. The revolving credit portion bears interest at either a fixed rate or floating rate based on LIBOR plus a spread. The spread, which varies depending on our credit ratings, ranges from 27 to 80 basis points. We also pay an annual facility fee regardless of utilization. This facility fee, currently 10 basis points, may fluctuate between 8 and 20 basis points, depending upon our credit ratings. In addition, a utilization fee of 10 basis points is payable for any day in which borrowings under the facility exceed 50% of the total $1 billion commitment. The competitive advance portion of any borrowings will bear interest at market rates prevailing at the time of borrowing on either a fixed rate or a floating rate basis, at our option.
The new credit agreement contains customary restrictive and financial covenants as well as customary events of default, including financial covenants, regarding the maintenance of a minimum level of net worth and a maximum leverage ratio. The terms of the new credit agreement also include standard provisions related to conditions of borrowing, including a customary material adverse effect clause which could limit our ability to borrow. We have not experienced a material adverse effect and we know of no circumstances or events which would be reasonably likely to result in a material adverse effect. At this time, we do not believe the material adverse effect clause poses a material funding risk to us.
In addition, we have outstanding letters of credit of $3.4 million secured under the new credit agreement. No amounts have ever been drawn on these letters of credit. As of September 30, 2006, we had $846.6 million of remaining borrowing capacity under the new credit agreement. We have other relationships, including financial advisory and banking, with some parties to the new credit agreement.
Other Borrowings
Other borrowings of $3.2 million at September 30, 2006 represent financing for the renovation of a building, bear interest at 2% per annum, are collateralized by the building, and are payable in various installments through 2014.
Shelf Registration
On March 31, 2006, we filed a universal shelf registration statement with the SEC. We are considered a “well known seasoned issuer” under the Securities Offering Reform Act that became effective in December 2005. The universal shelf registration allows us to sell our debt or equity securities, from time to time, with the amount, price and terms to be determined at the time of the sale. The net proceeds from any future sales of our securities under the universal shelf registration may be used for our operations and for other general corporate purposes, including repayment or refinancing of borrowings, working capital, capital expenditures, investments, acquisitions, or the repurchase of our outstanding securities.
(10) Guarantees and Contingencies
Government Contracts
Our Medicare business, which accounted for approximately 54% of our total premiums and administrative services only, or ASO, fees for the nine months ended September 30, 2006, primarily consisted of products covered under the Medicare Advantage and PDP contracts with the federal government. These contracts are renewed generally for a one-year term each December 31 unless CMS notifies Humana of its decision not to renew by May 1 of the contract year, or Humana notifies CMS of its decision not to renew by the first Monday in June of the contract year. All material contracts between Humana and CMS relating to our Medicare business have been renewed for 2007. For the year beginning January 1, 2007, we have entered into additional Medicare Advantage and PDP contracts with CMS for New York and Puerto Rico. The New York and Puerto Rico contracts are substantially similar in all material respects with the previous Humana/CMS contracts, forms of which were attached as exhibits to the Form 10-Q filed by the Company for the quarter ended September 30, 2005.
 
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Humana Inc.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)
Unaudited
Our TRICARE business, which accounted for approximately 12% of our total premiums and ASO fees for the nine months ended September 30, 2006, primarily consisted of the South Region contract. The 5-year South Region contract is subject to annual renewals on April 1 of each year at the Government’s option. Effective April 1, 2006, the South Region contract was extended into the third option period, which runs from April 1, 2006 to March 31, 2007. The contract expires March 31, 2009. As required under the contract, the target underwritten health care cost and underwriting fee amounts for the third option period were negotiated. Any variance from the target health care cost is shared with the federal government. Accordingly, events and circumstances not contemplated in the negotiated target health care cost amount could have a material adverse effect on our business. These changes may include, for example, an increase or reduction in the number of persons enrolled or eligible to enroll due to the federal government’s decision to increase or decrease U.S. military deployments. In the event government reimbursements were to decline from projected amounts, our failure to reduce the health care costs associated with these programs could have a material adverse effect on our business.
Our Medicaid business, which accounted for approximately 2% of our total premiums and ASO fees for the nine months ended September 30, 2006, consisted of contracts in Puerto Rico and Florida. Our contracts with the Puerto Rico Health Insurance Administration accounted for approximately 2% of our total premium and ASO fees for the nine months ended September 30, 2006. We currently are operating under the terms of our contracts that expired October 31, 2006. Due to several ongoing and unresolved issues with the program, the government of Puerto Rico has decided to delay the bid process for new contracts. It now appears that the Puerto Rico Health Insurance Administration will request an additional extension of the existing contracts through September 30, 2007, subject to our mutual agreement on terms and rates. There is no assurance that the Puerto Rico Health Insurance Administration will request such an extension, and we are unable to predict the ultimate impact that any government policy or fiscal decisions might have on the continuation of our Medicaid contracts in Puerto Rico.
The loss of any of the contracts above or significant changes in these programs as a result of legislative action, including reductions in premium payments to us, or increases in member benefits without corresponding increases in premium payments to us, may have a material adverse effect on our financial position, results of operations, and cash flows.
Legal Proceedings
Our current and past business practices are subject to review by various state insurance and health care regulatory authorities and other state and federal regulatory authorities. These authorities regularly scrutinize the business practices of health insurance and benefits companies. These reviews focus on numerous facets of our business, including claims payment practices, competitive practices, commission payments, privacy issues, utilization management practices, and sales practices. Some of these reviews have historically resulted in fines imposed on us and some have required changes to some of our practices. We continue to be subject to these reviews, which could result in additional fines or other sanctions being imposed on us or additional changes in some of our practices.
We also are involved in various lawsuits that arise, for the most part, in the ordinary course of our business operations, including employment litigation, claims of medical malpractice, bad faith, nonacceptance or termination of providers, anticompetitive practices, improper rate setting, failure to disclose network discounts and various other provider arrangements, intellectual property matters, and challenges to subrogation practices. We also are subject to claims relating to performance of contractual obligations to providers, members, and others, including failure to properly pay claims, challenges to our implementation of the new Medicare prescription drug program and other litigation.
Personal injury claims and claims for extracontractual damages arising from medical benefit denials are covered by insurance from our wholly owned captive insurance subsidiary and excess carriers, except to the extent that claimants seek punitive damages, which may not be covered by insurance in certain states in which insurance coverage for punitive damages is not permitted. In addition, insurance coverage for all or certain forms of liability has become increasingly costly and may become unavailable or prohibitively expensive in the future.
 
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Humana Inc.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)
Unaudited
The outcome of current suits or likelihood or outcome of future suits or governmental investigations cannot be accurately predicted with certainty, and therefore, such legal actions and government audits and investigations could have a material adverse effect on our financial position, results of operations, and cash flows.
(11) Segment Information
We manage our business with two segments: Government and Commercial. The Government segment consists of members enrolled in government-sponsored programs, and includes three lines of business: Medicare, TRICARE, and Medicaid. The Commercial segment consists of members enrolled in products marketed to employer groups and individuals, and includes three lines of business: fully insured medical, ASO, and specialty. We identified our segments in accordance with the aggregation provisions of SFAS No. 131 , Disclosures About Segments of an Enterprise and Related Information,  or SFAS 131, which is consistent with information used by our Chief Executive Officer in managing our business. The segment information aggregates products with similar economic characteristics. These characteristics include the nature of customer groups and pricing, benefits and underwriting requirements.
The accounting policies of each segment are the same and are described in Note 2 to our Form 10-K for the year ended December 31, 2005. We have adjusted prior period amounts to reflect the effect of expensing stock awards under the modified retrospective application method of SFAS 123R as discussed in Note 6 of the condensed consolidated financial statements. The results of each segment are measured by income before income taxes. We allocate all selling, general and administrative expenses, investment and other income, interest expense, and goodwill, but no other assets or liabilities, to our segments. Members served by our two segments often utilize the same medical provider networks, enabling us to obtain more favorable contract terms with providers. Our segments also share some indirect overhead costs and assets. As a result, the profitability of each segment is interdependent.
Our segment results were as follows for the three and nine months ended September 30, 2006 and 2005:
 
| | Government Segment
| | Three months ended September 30, | | Nine months ended September 30,
| | 2006 | | 2005 | | 2006 | | 2005
| | (in thousands)
Revenues: | | | | | | | | | | | |
Premiums: | | | | | | | | | | | |
Medicare Advantage | | $ | 2,366,206 | | $ | 1,296,743 | | $ | 6,196,455 | | $ | 3,372,326
Medicare PDP | | | 851,398 | | | — | | | 2,168,310 | | | —
Total Medicare | | | 3,217,604 | | | 1,296,743 | | | 8,364,765 | | | 3,372,326
TRICARE | | | 639,657 | | | 659,019 | | | 1,898,038 | | | 1,832,526
Medicaid | | | 128,018 | | | 139,961 | | | 386,643 | | | 409,105
Total premiums | | | 3,985,279 | | | 2,095,723 | | | 10,649,446 | | | 5,613,957
Administrative services fees | | | 11,136 | | | 11,076 | | | 33,471 | | | 39,870
Investment and other income | | | 33,545 | | | 7,086 | | | 70,267 | | | 14,619
Total revenues | | | 4,029,960 | | | 2,113,885 | | | 10,753,184 | | | 5,668,446
Operating expenses: | | | | | | | | | | | |
Medical | | | 3,389,150 | | | 1,729,902 | | | 9,107,593 | | | 4,700,028
Selling, general and administrative | | | 403,951 | | | 278,488 | | | 1,239,085 | | | 659,797
Depreciation and amortization | | | 20,857 | | | 15,449 | | | 61,374 | | | 39,476
Total operating expenses | | | 3,813,958 | | | 2,023,839 | | | 10,408,052 | | | 5,399,301
Income from operations | | | 216,002 | | | 90,046 | | | 345,132 | | | 269,145
Interest expense | | | 8,998 | | | 2,178 | | | 18,575 | | | 8,274
Income before income taxes | | $ | 207,004 | | $ | 87,868 | | $ | 326,557 | | $ | 260,871
 
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Humana Inc.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—(Continued)
Unaudited
 
| | Commercial Segment
| | Three months ended September 30, | | | Nine months ended September 30,
| | 2006 | | 2005 | | | 2006 | | 2005
| | (in thousands)
Revenues: | | | | | | | | | | | | |
Premiums: | | | | | | | | | | | | |
Fully insured | | | | | | | | | | | | |
PPO | | $ | 935,873 | | $ | 905,475 | | | $ | 2,760,992 | | $ | 2,719,961
HMO | | | 462,072 | | | 614,496 | | | | 1,555,531 | | | 1,829,682
Total fully insured | | | 1,397,945 | | | 1,519,971 | | | | 4,316,523 | | | 4,549,643
Specialty | | | 103,144 | | | 96,670 | | | | 306,360 | | | 285,598
Total premiums | | | 1,501,089 | | | 1,616,641 | | | | 4,622,883 | | | 4,835,241
Administrative services fees | | | 75,196 | | | 54,996 | | | | 215,250 | | | 156,370
Investment and other income | | | 43,539 | | | 35,939 | | | | 170,001 | | | 94,990
Total revenues | | | 1,619,824 | | | 1,707,576 | | | | 5,008,134 | | | 5,086,601
Operating expenses: | | | | | | | | | | | | |
Medical | | | 1,226,852 | | | 1,364,495 | | | | 3,771,836 | | | 4,036,611
Selling, general and administrative | | | 325,771 | | | 337,638 | | | | 965,386 | | | 926,288
Depreciation and amortization | | | 16,820 | | | 18,670 | | | | 47,805 | | | 55,655
Total operating expenses | | | 1,569,443 | | | 1,720,803 | | | | 4,785,027 | | | 5,018,554
Income (loss) from operations | | | 50,381 | | | (13,227 | ) | | | 223,107 | | | 68,047
Interest expense | | | 8,011 | | | 7,963 | | | | 28,760 | | | 20,712
Income (loss) before income taxes | | $ | 42,370 | | $ | (21,190 | ) | | $ | 194,347 | | $ | 47,335
 
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Humana Inc.
MANAGEMENT’S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS
The condensed consolidated financial statements of Humana Inc. in this document present the Company’s financial position, results of operations and cash flows, and should be read in conjunction with the following discussion and analysis. References to “we,” “us,” “our,” “Company,” and “Humana” mean Humana Inc. and its subsidiaries. This discussion includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. When used in filings with the SEC, in our press releases, investor presentations, and in oral statements made by or with the approval of one of our executive officers, the words or phrases like “expects,” “anticipates,” “intends,” “likely will result,” “estimates,” “projects” or variations of such words and similar expressions are intended to identify such forward–looking statements. These forward–looking statements are not guarantees of future performance and are subject to risks, uncertainties and assumptions, including, among other things, information set forth in Item 1A. – Risk Factors in our Form 10-K for the year ended December 31, 2005 that was filed with the SEC on March 3, 2006. In making these statements, we are not undertaking to address or update these factors in future filings or communications regarding our business or results except as required by law. In light of these risks, uncertainties and assumptions, the forward–looking events discussed in this document might not occur. There may also be other risks that we are unable to predict at this time. Any of these risks and uncertainties may cause actual results to differ materially from the results discussed in the forward–looking statements.
Overview
Headquartered in Louisville, Kentucky, Humana Inc. is one of the nation’s largest publicly traded health benefits companies, based on our 2005 revenues of $14.4 billion. We offer coordinated health insurance coverage and related services through a variety of traditional and consumer-choice plans for government-sponsored programs, employer groups, and individuals. As of September 30, 2006, we had approximately 11.1 million members in our medical benefit programs, as well as approximately 1.9 million members in our specialty products programs.
We manage our business with two segments: Government and Commercial. The Government segment consists of members enrolled in government-sponsored programs, and includes three lines of business: Medicare, TRICARE, and Medicaid. The Commercial segment consists of members enrolled in products marketed to employer groups and individuals, and includes three lines of business: fully insured medical, ASO, and specialty. We identified our segments in accordance with the aggregation provisions of SFAS 131 ,  which is consistent with information used by our Chief Executive Officer in managing our business. The segment information aggregates products with similar economic characteristics. These characteristics include the nature of customer groups and pricing, benefits and underwriting requirements.
The results of each segment are measured by income before income taxes. We allocate all selling, general and administrative expenses, investment and other income, interest expense, and goodwill, but no other assets or liabilities, to our segments. Members served by our two segments often utilize the same medical provider networks, enabling us to obtain more favorable contract terms with providers. Our segments also share overhead costs and assets. As a result, the profitability of each segment is interdependent. We believe our customer, membership, revenue and pretax income diversification across segments and products allows us to increase our chances of success.
Our results are impacted by many factors, but most notably are influenced by our ability to establish and maintain a competitive and efficient cost structure and to accurately and consistently establish competitive premium, ASO fee, and plan benefit levels that are commensurate with our medical and administrative costs. Medical costs are subject to a high rate of inflation due to many forces, including new higher-priced technologies and medical procedures, increasing capacity and supply of medical services, new prescription drugs and therapies, an aging population, lifestyle challenges including obesity and smoking, the tort liability system, and government regulation.
Government Segment
Our strategy and commitment to the expanded Medicare programs, including new product choices and pharmacy benefits for seniors, has led to substantial growth during 2006. Medicare Advantage membership increased to 993,000 members at September 30, 2006, up 78% from 557,800 members at December 31, 2005, primarily due to sales of Private Fee-For-Service, or PFFS, products. Our new Medicare stand-alone PDP products added 3,521,000 members during the nine months ended September 30, 2006. Likewise, Medicare premium revenues of $3.2 billion for the third quarter of 2006 increased 148.1% from $1.3 billion in the third quarter of 2005, and increased 10.3% from $2.9 billion in the second quarter of 2006. We expect full year 2006 Medicare premium revenues to nearly double compared to 2005 as a result of the growth of our Medicare Advantage and PDP products.
 
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Earnings in the Government segment for the three months ended September 30, 2006 were 73% higher than Government segment earnings for the first two quarters of 2006 due to the combination of 1) the earnings pattern associated with our new PDP business and 2) a lower ratio of selling, general and administrative expenses, or SG&A expenses, relative to premium revenues for our Medicare Advantage and PDP business. Our earnings pattern is significantly impacted by the amount of prescription drug costs incurred in the first half relative to the latter half of the year due to the PDP benefit designs. These benefit designs result in coverage that varies as a member’s cumulative out-of-pocket costs pass through successive stages of a member’s plan period as specified under the CMS “defined standard” plan. These plan designs generally result in us sharing a greater portion of the responsibility for total pharmacy costs in the early stages of a member’s plan period and less in the later stages for the plans which comprise the majority of our membership, resulting in an improving medical expense ratio, or MER, for the PDP products as the year progresses.
In the three months ended September 30, 2006 our revenues began to reach the level ultimately contemplated by our infrastructure and service capacity build out that began in late 2005 and continued through the end of the second quarter of 2006. As a result, our SG&A expense ratio has declined.
Commercial Segment
We continue to increase the diversification of our Commercial segment membership base and exercise pricing discipline relative to our fully insured accounts. With respect to pricing, there is a tradeoff between sustaining or increasing underwriting margins versus increasing or decreasing enrollment. Commercial segment medical membership increased 121,100 members, or 3.8% from December 31, 2005 to 3,291,900 at September 30, 2006 as a result of the May 1, 2006 CHA acquisition which added 88,400 members and higher ASO, individual and consumer-choice membership, partially offset by a decline in our fully insured group membership. ASO membership at September 30, 2006 was up 29% from September 30, 2005. Individual membership increased 15% and consumer-choice membership 23% during the same period. These three areas, together with our small group business, now represent more than 77% of our Commercial medical membership. We experienced a decline in our fully insured group commercial membership as a result of pricing actions by some competitors whom we perceive as desiring to gain market share in certain markets.
Other Highlights
 
| • | | Our 2007 Medicare product filings were approved and released by CMS on September 29, 2006.
 
| • | | We issued $500 million of 6.45% senior notes due June 1, 2016 in May 2006, replaced our existing 5-year $600 million unsecured revolving credit agreement with a new 5-year $1.0 billion unsecured revolving credit agreement in July 2006, and repaid our $300 million of 7.25% senior notes in August 2006. These transactions are more fully described in Note 9 to the condensed consolidated financial statements.
 
| • | | During the nine months ended September 30, 2006, we sold a venture capital investment for cash proceeds of $65.3 million, resulting in a realized pretax gain of $51.7 million.
 
| • | | The effective income tax rate was 36.2% for the nine months ended September 30, 2006 compared to 23.8% for the nine months ended September 30, 2005. The lower effective tax rate in 2005 primarily reflects the favorable impact from the resolution of a contingent gain of $22.8 million.
 
| • | | Cash flows from operations increased $290.9 million to $1,151.8 million for the nine months ended September 30, 2006 compared to $860.9 million for the nine months ended September 30, 2005 even with unfavorable comparisons caused by the timing of our Medicare payments. The nine months ended September 30, 2005 included ten monthly Medicare payments, increasing operating cash flows by $365.0 million, compared to only nine monthly Medicare payments during the nine months ended September 30, 2006.
 
| • | | Our operating cash flow has been favorably impacted by the Part D provisions of our Medicare Advantage and PDP contracts, including $432.5 million in estimated net amounts owed to CMS under the risk corridor provisions which are expected to be settled during 2007.
 
| • | | Our Complete stand-alone PDP plan, representing 12% of our PDP membership, is operating at a loss with an MER of 133% for the three months ended September 30, 2006. The primary reason for the operating loss is that this plan offers benefits in excess of the standard plan which are not reimbursable under the risk corridor provisions of the contract.
 
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We intend for the discussion of our financial condition and results of operations that follows to assist in the understanding of our financial statements and related changes in certain key items in those financial statements from year to year, and the primary factors that accounted for those changes, as well as how certain critical accounting principles and estimates impact our financial statements.
Recent Acquisition
On May 1, 2006, our Commercial segment acquired CHA Service Company, or CHA Health, a health plan serving employer groups in Kentucky, for cash consideration of approximately $65.8 million including estimated transaction costs. This acquisition strengthens our position in the Kentucky market. The acquisition of CHA Health added approximately 60,100 fully insured group members and 28,300 ASO members to our Commercial segment medical membership. This transaction is not expected to have a material impact on our results of operations or cash flows from operations for 2006.
2005 Settlement of Class Action Litigation
On October 17, 2005, we reached an agreement with representatives of more than 700,000 physicians to settle a nationwide class action suit. In connection with the settlement and other related litigation costs, we recorded pretax administrative expenses of $71.9 million ($44.8 million after taxes, or $0.27 per diluted common share) in the third quarter of 2005. Of the $71.9 million, $33.4 million was included in the Government segment results and the remaining $38.5 million was included in the Commercial segment results. These amounts have been paid.
2005 Hurricane Katrina
Certain areas of our operations, primarily the Louisiana market, were negatively affected by the impact of Hurricane Katrina in August 2005. Expenses related to Hurricane Katrina primarily stemmed from our efforts, in cooperation with Departments of Insurance in the affected states, to help our members by offering participating-provider benefits at non-participating providers, paying claims for members who were unable at that time to meet their premium obligations and similar measures. In connection with Hurricane Katrina, we recorded pretax medical and administrative expenses of $6.7 million ($4.2 million after taxes, or $0.03 per diluted common share) during the third quarter of 2005. Of the $6.7 million, $1.5 million was included in the Government segment results and the remaining $5.2 million was included in the Commercial segment results.
Recently Issued Accounting Pronouncements
In July 2006, the FASB issued FASB Interpretation No. 48, Accounting for Uncertainty in Income Taxes-an Interpretation of FASB Statement 109, or FIN 48. FIN 48 prescribes a comprehensive model for how a company should recognize, measure, present, and disclose in its financial statements uncertain tax positions that the company has taken or expects to take on a tax return. FIN 48 also revises disclosure requirements and introduces a prescriptive, annual, tabular roll-forward of the unrecognized tax benefits. FIN 48, which will become effective for us beginning January 1, 2007, requires the change in net assets that results from the application of the new accounting model to be reflected as an adjustment to retained earnings. We currently are evaluating the impact of the adoption of FIN 48, however it is not expected to have a material impact on our financial position or results of operations.
In September 2006, the FASB issued Statement of Financial Accounting Standards No. 158, Employers’ Accounting for Defined Benefit Pension and Other Postretirement Plans , or SFAS 158. We are required to adopt SFAS 158 prospectively in the fourth quarter of 2006 for the year ending December 31, 2006. SFAS 158 requires an employer to recognize the overfunded or underfunded status of a defined benefit postretirement plan (other than a multiemployer plan) as an asset or liability in its statement of financial position, and to recognize changes in that funded status in the year in which the changes occur through comprehensive income. SFAS 158 also requires an employer to measure the funded status of a plan as of the date of its year-end statement of financial position and revises certain disclosure requirements. The benefit obligation is defined as the projected benefit obligation for pension plans and as the accumulated postretirement benefit obligation for any other postretirement benefit plan, such as a retiree health care plan. The impact of adopting SFAS 158 will not be material to our financial position or results of operations.
In September 2006, the FASB issued SFAS No. 157, Fair Value Measurements, or SFAS 157. SFAS 157 defines fair value, establishes a framework for measuring fair value, and expands disclosures about fair value measurements. SFAS 157 does not require new fair value measurements. We are required to adopt SFAS 157 in the first quarter of 2008. We currently are evaluating the provisions of SFAS 157, however we do not expect the adoption of SFAS 157 will have a material impact on our financial position or results of operations.
 
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Comparison of Results of Operations for 2006 and 2005
The following discussion primarily deals with our results of operations for the three months ended September 30, 2006, or the 2006 quarter, the three months ended September 30, 2005, or the 2005 quarter, the nine months ended September 30, 2006, or the 2006 period, and the nine months ended September 30, 2005, or the 2005 period.
The following table presents certain financial data for our two segments:
 
| | For the three months ended September 30, | | | Change |
| | 2006 | | | 2005 | | | Dollars | | | Percentage |
| | (in thousands, except ratios) |
Premium revenues: | | | | | | | | | | | | | | |
Medicare Advantage | | $ | 2,366,206 | | | $ | 1,296,743 | | | $ | 1,069,463 | | | 82.5 | %
Medicare PDP | | | 851,398 | | | | — | | | | 851,398 | | | 100.0 | %
Total Medicare | | | 3,217,604 | | | | 1,296,743 | | | | 1,920,861 | | | 148.1 | %
TRICARE | | | 639,657 | | | | 659,019 | | | | (19,362 | ) | | (2.9 | )%
Medicaid | | | 128,018 | | | | 139,961 | | | | (11,943 | ) | | (8.5 | )%
Total Government | | | 3,985,279 | | | | 2,095,723 | | | | 1,889,556 | | | 90.2 | %
Fully insured | | | 1,397,945 | | | | 1,519,971 | | | | (122,026 | ) | | (8.0 | )%
Specialty | | | 103,144 | | | | 96,670 | | | | 6,474 | | | 6.7 | %
Total Commercial | | | 1,501,089 | | | | 1,616,641 | | | | (115,552 | ) | | (7.1 | )%
Total | | $ | 5,486,368 | | | $ | 3,712,364 | | | $ | 1,774,004 | | | 47.8 | %
Administrative services fees: | | | | | | | | | | | | | | |
Government | | $ | 11,136 | | | $ | 11,076 | | | $ | 60 | | | 0.5 | %
Commercial | | | 75,196 | | | | 54,996 | | | | 20,200 | | | 36.7 | %
Total | | $ | 86,332 | | | $ | 66,072 | | | $ | 20,260 | | | 30.7 | %
Income (loss) before income taxes^(a): | | | | | | | | | | | | | | |
Government | | $ | 207,004 | | | $ | 87,868 | | | $ | 119,136 | | | 135.6 | %
Commercial | | | 42,370 | | | | (21,190 | ) | | | 63,560 | | | 300.0 | %
Total | | $ | 249,374 | | | $ | 66,678 | | | $ | 182,696 | | | 274.0 | %
Medical expense ratios^(b): | | | | | | | | | | | | | | |
Government | | | 85.0 | % | | | 82.5 | % | | | | | | 2.5 | %
Commercial | | | 81.7 | % | | | 84.4 | % | | | | | | (2.7 | )%
Total | | | 84.1 | % | | | 83.4 | % | | | | | | 0.7 | %
SG&A expense ratios^(a) ^(c): | | | | | | | | | | | | | | |
Government | | | 10.1 | % | | | 13.2 | % | | | | | | (3.1 | )%
Commercial | | | 20.7 | % | | | 20.2 | % | | | | | | 0.5 | %
Total | | | 13.1 | % | | | 16.3 | % | | | | | | (3.2 | )%
 
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| | For the nine months ended September 30, | | | Change |
| | 2006 | | | 2005 | | | Dollars | | | Percentage |
| | (in thousands, except ratios) |
Premium revenues: | | | | | | | | | | | | | | |
Medicare Advantage | | $ | 6,196,455 | | | $ | 3,372,326 | | | $ | 2,824,129 | | | 83.7 | %
Medicare PDP | | | 2,168,310 | | | | — | | | | 2,168,310 | | | 100.0 | %
Total Medicare | | | 8,364,765 | | | | 3,372,326 | | | | 4,992,439 | | | 148.0 | %
TRICARE | | | 1,898,038 | | | | 1,832,526 | | | | 65,512 | | | 3.6 | %
Medicaid | | | 386,643 | | | | 409,105 | | | | (22,462 | ) | | (5.5 | )%
Total Government | | | 10,649,446 | | | | 5,613,957 | | | | 5,035,489 | | | 89.7 | %
Fully insured | | | 4,316,523 | | | | 4,549,643 | | | | (233,120 | ) | | (5.1 | )%
Specialty | | | 306,360 | | | | 285,598 | | | | 20,762 | | | 7.3 | %
Total Commercial | | | 4,622,883 | | | | 4,835,241 | | | | (212,358 | ) | | (4.4 | )%
Total | | $ | 15,272,329 | | | $ | 10,449,198 | | | $ | 4,823,131 | | | 46.2 | %
Administrative services fees: | | | | | | | | | | | | | | |
Government | | $ | 33,471 | | | $ | 39,870 | | | $ | (6,399 | ) | | (16.0 | )%
Commercial | | | 215,250 | | | | 156,370 | | | | 58,880 | | | 37.7 | %
Total | | $ | 248,721 | | | $ | 196,240 | | | $ | 52,481 | | | 26.7 | %
Income before income taxes^(a): | | | | | | | | | | | | | | |
Government | | $ | 326,557 | | | $ | 260,871 | | | $ | 65,686 | | | 25.2 | %
Commercial | | | 194,347 | | | | 47,335 | | | | 147,012 | | | 310.6 | %
Total | | $ | 520,904 | | | $ | 308,206 | | | $ | 212,698 | | | 69.0 | %
Medical expense ratios^(b): | | | | | | | | | | | | | | |
Government | | | 85.5 | % | | | 83.7 | % | | | | | | 1.8 | %
Commercial | | | 81.6 | % | | | 83.5 | % | | | | | | (1.9 | )%
Total | | | 84.3 | % | | | 83.6 | % | | | | | | 0.7 | %
SG&A expense ratios^(a) ^(c): | | | | | | | | | | | | | | |
Government | | | 11.6 | % | | | 11.7 | % | | | | | | (0.1 | )%
Commercial | | | 20.0 | % | | | 18.6 | % | | | | | | 1.4 | %
Total | | | 14.2 | % | | | 14.9 | % | | | | | | (0.7 | )%

(a) | Prior period amounts have been adjusted to reflect the expensing of stock awards under the modified retrospective application method of SFAS 123R as more fully discussed in Note 6 to the condensed consolidated financial statements included in this report.
(b) | Represents total medical expenses as a percentage of premium revenue. Also known as MER.
(c) | Represents total selling, general, and administrative expenses as a percentage of premium revenues and administrative services fees. Also known as the SG&A expense ratio.
 
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Ending medical membership was as follows at September 30, 2006 and 2005:
 
| | September 30, | | Change |
| | 2006 | | 2005 | | Members | | | Percentage |
Government segment medical members: | | | | | | | | | |
Medicare Advantage | | 993,000 | | 503,100 | | 489,900 | | | 97.4 | %
Medicare PDP | | 3,521,000 | | — | | 3,521,000 | | | 100.0 | %
Total Medicare | | 4,514,000 | | 503,100 | | 4,010,900 | | | 797.2 | %
TRICARE | | 1,721,300 | | 1,747,100 | | (25,800 | ) | | (1.5 | )%
TRICARE ASO | | 1,141,400 | | 1,127,300 | | 14,100 | | | 1.3 | %
Total TRICARE | | 2,862,700 | | 2,874,400 | | (11,700 | ) | | (0.4 | )%
Medicaid | | 412,600 | | 459,400 | | (46,800 | ) | | (10.2 | )%
Total Government | | 7,789,300 | | 3,836,900 | | 3,952,400 | | | 103.0 | %
Commercial segment medical members: | | | | | | | | | |
Fully insured | | 1,779,900 | | 2,007,400 | | (227,500 | ) | | (11.3 | )%
ASO | | 1,512,000 | | 1,170,500 | | 341,500 | | | 29.2 | %
Total Commercial | | 3,291,900 | | 3,177,900 | | 114,000 | | | 3.6 | %
Total medical membership | | 11,081,200 | | 7,014,800 | | 4,066,400 | | | 58.0 | %
These tables of financial data should be reviewed in connection with the discussion that follows.
Summary
Net income was $159.2 million, or $0.95 per diluted common share, in the 2006 quarter compared to $46.8 million, or $0.28 per diluted common share, in the 2005 quarter. Net income was $332.4 million, or $1.98 per diluted common share, in the 2006 period compared to $235.0 million, or $1.42 per diluted common share, in the 2005 period. The 2005 quarter and period included expenses resulting from the physician class action settlement ($44.8 million after taxes, or $0.27 per diluted common share) and costs associated with Hurricane Katrina ($4.2 million after taxes, or $0.03 per diluted common share) described previously. The 2005 period also included the beneficial effect of an effective tax rate of approximately 23.8% compared to 36.2% in the 2006 period, primarily due to the resolution of a contingent gain during the first quarter of 2005 in connection with the expiration of the statute of limitations on an uncertain tax position related to the 2000 tax year. After considering litigation and Hurricane Katrina expenses and the favorable tax gain contingency in the prior year, the remaining year over year improvement in the 2006 quarter and period result from earnings increases in both the Government and Commercial segments.
Premium Revenues and Medical Membership
Premium revenues increased 47.8% to $5.5 billion for the 2006 quarter, compared to $3.7 billion for the 2005 quarter. For the 2006 period, premium revenues were $15.3 billion, an increase of 46.2% compared to $10.4 billion for the 2005 period. Higher Government segment premium revenues were partially offset by a decrease in Commercial segment premium revenues. Premium revenues reflect higher enrollment in our Medicare Advantage plans and the addition of our PDP business.
Government segment premium revenues increased $1.9 billion, or 90.2% to $4.0 billion for the 2006 quarter, compared to $2.1 billion for the 2005 quarter. For the 2006 period, Government segment premium revenues were $10.6 billion, an increase of $5.0 billion, or 89.7% compared to $5.6 billion for the 2005 period. This increase primarily was attributable to the expanded participation in various Medicare products and geographic markets. Sales of our PFFS products drove the majority of the 97.4% increase in Medicare Advantage members since September 30, 2005. At September 30, 2006, approximately 47% of the company’s Medicare Advantage members were in PFFS plans versus 15% at September 30, 2005. Additionally, our new Medicare stand-alone PDP products added 3,521,000 members during the 2006 period and $851.4 million in new premium revenues during the 2006 quarter and $2.2 billion during the 2006 period. Medicaid membership declined by 46,800 members from September 30, 2005 to September 30, 2006 primarily due to the non-renewal of the Illinois Medicaid program on July 31, 2005 and a shift of eligible Puerto Rico Medicaid members to the Medicare program.
Commercial segment premium revenues decreased 7.1% to $1.5 billion for the 2006 quarter. For the 2006 period, Commercial segment premium revenues decreased 4.4% to $4.6 billion compared to $4.8 billion for the 2005 period. Lower premium revenues primarily resulted from a reduction of fully insured membership. Our fully
 
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insured membership decreased 11.3%, or 227,500 members, to 1,779,900 at September 30, 2006 compared to 2,007,400 at September 30, 2005 primarily as a result of continued attrition within the fully insured group accounts, partially offset by membership gains from the CHA acquisition, and membership increases in the individual and consumer-choice product lines. Attrition in the fully insured group accounts results from a competitive pricing environment. Average per member premiums for our fully insured group medical members increased approximately 4.9% from the 2005 quarter to the 2006 quarter and increased approximately 5.7% from the 2005 period to the 2006 period. These average per member premium increases reflect a shift in the mix in our fully insured group membership from large groups to individuals and small groups as large groups continue to move to an administrative services only offering. Average per member premiums are lower for individuals and small groups than large groups.
Administrative Services Fees
Our administrative services fees for the 2006 quarter were $86.3 million, an increase of $20.2 million, or 30.7%, from $66.1 million for the 2005 quarter. For the 2006 period, administrative services fees were $248.7 million, an increase of $52.5 million, or 26.7%, from $196.2 million for the 2005 period. The increase was primarily due to increases in our Commercial segment administrative services fees.
For the Commercial segment, administrative services fees increased $20.2 million, or 36.7%, from $55.0 million for the 2005 quarter to $75.2 million for the 2006 quarter. For the 2006 period, Commercial segment administrative services fees increased $58.9 million, or 37.7%, from $156.4 million for the 2005 period to $215.3 million for the 2006 period. This increase resulted from increased membership. ASO membership of 1,170,500 members at September 30, 2005 increased 29.2% to 1,512,000 at September 30, 2006. Average per member fees increased approximately 13% in the 2006 quarter and approximately 18% in the 2006 period.
Investment Income
Investment income totaled $62.5 million for the 2006 quarter, an increase of $23.7 million from $38.8 million for the 2005 quarter. Investment income totaled $211.9 million for the 2006 period, an increase of $111.8 million from $100.1 million for the 2005 period. The increase in investment income for the 2006 quarter and period primarily resulted from higher average invested balances and interest rates. In addition, the 2006 period included a $51.7 million realized gain related to the sale of a venture capital investment.
Other Revenue
Other revenue totaled $14.6 million for the 2006 quarter, an increase of $10.4 million from $4.2 million for the 2005 quarter. Other revenue totaled $28.3 million for the 2006 period, an increase of $18.8 million from $9.5 million for the 2005 period. The increase primarily was attributable to copay revenue from our new in-house mail order pharmacy operations in the 2006 quarter and period.
Medical Expense
Consolidated medical expenses increased $1.5 billion, or 49.2%, during the 2006 quarter compared to the 2005 quarter. For the 2006 period, consolidated medical expense was $12.9 billion, an increase of $4.1 billion, or 47.4%, from the 2005 period. The increase was primarily driven by the increase in the number of members, particularly Medicare members, and an increase in average per member claims costs primarily from the effects of health care inflation.
MER, which is computed by taking total medical expenses as a percentage of premium revenues, represents a key industry statistic used to measure underwriting profitability.
The consolidated MER for the 2006 quarter was 84.1%, a 70 basis point increase from 83.4% for the 2005 quarter. The consolidated MER for the 2006 period was 84.3%, an increase of 70 basis points from the 2005 period rate of 83.6%. An improvement in the Commercial segment MER was offset by a higher Government segment MER associated with the new Medicare PDP offerings.
The Government segment’s medical expenses increased $1.7 billion, or 95.9%, during the 2006 quarter compared to the 2005 quarter. For the 2006 period, the Government segment’s medical expenses increased $4.4 billion, or 93.8% from the 2005 period. The increase was primarily due to an increase in the number of Medicare members, including those enrolled in our PDPs.
The Government segment’s MER for the 2006 quarter was 85.0%, a 250 basis point increase from the 2005 quarter of 82.5%. For the 2006 period, the Government segment’s MER was 85.5%, an increase of 180 basis points from the 2005 period of 83.7%. The increase was primarily attributable to the establishment of the stand-alone
 
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PDPs in January 2006 with an MER of 93.0% for the 2006 quarter and an MER of 93.7% for the 2006 period. The MER for our PDP business was impacted by the amount of prescription drug costs recognized as incurred relative to premium revenue due to PDP benefit designs. These benefit designs result in sharing a greater portion of the responsibility for total pharmacy costs in the early stages of a member’s plan period and less in the later stages for the plans which comprise the majority of our membership, resulting in a declining MER for the PDP products as the year progresses. The PDP MER was also negatively impacted by an MER in our Complete plan of 133% for the 2006 quarter, one of three stand-alone PDP plans representing approximately 12% of our PDP members. We expect an MER for the full year 2006 of approximately 84% to 85% for our combined Medicare Advantage and stand-alone PDP plans.
The Commercial segment’s medical expenses decreased $137.6 million, or 10.1%, from the 2005 quarter to the 2006 quarter. For the 2006 period, the Commercial segment’s medical expenses decreased $264.8 million, or 6.6%, from the 2005 period. This decrease primarily results from the decrease in fully insured group membership partially offset by the increase in average per member claims costs. The increase in average per member claims costs for fully insured group members was approximately 5% for the 2006 quarter and period and is expected to range from 5% to 6% for the full year 2006.
The MER for the Commercial segment of 81.7% in the 2006 quarter decreased 270 basis points from the 2005 quarter MER of 84.4%. For the 2006 period, the Commercial segment’s MER of 81.6% decreased 190 basis points from the 2005 period MER of 83.5%. Higher medical expenses from Hurricane Katrina increased the 2005 quarter MER 30 basis points and the 2005 period MER 10 basis points. The decrease in MER primarily reflects improving medical cost utilization trends and an increase in the percentage of individuals and small group members comprising our total fully insured block. Individuals and smaller group accounts generally carry a lower MER than larger group accounts.
SG&A Expense
Consolidated SG&A expenses increased $113.6 million, or 18.4%, during the 2006 quarter compared to the 2005 quarter. For the 2006 period, consolidated SG&A expenses increased $618.4 million, or 39.0% from the 2005 period. The increase primarily resulted from an increase in the number of employees and increased sales and marketing costs due to the Medicare expansion offset by prior year litigation and Hurricane Katrina expenses which did not recur. The number of employees increased by 2,600 to 21,300 from 18,700 at December 31, 2005, and by 3,800, or 21.7% from 17,500 at September 30, 2005, primarily in the sales and customer service functions associated with the growth in the Medicare business.
The SG&A expense ratio, which is computed by taking total selling, general, and administrative expenses as a percentage of premium revenues and administrative services fees, represents a key industry statistic used to measure administrative spending efficiency.
The consolidated SG&A expense ratio for the 2006 quarter was 13.1%, decreasing 320 basis points from 16.3% for the 2005 quarter. Expenses related to the litigation settlement and Hurricane Katrina increased the SG&A expense ratio 190 basis points for the 2005 quarter. After considering the effects of the litigation settlement and Hurricane Katrina, the remaining decrease resulted from growth in revenues which continued to outpace the related increase in administrative spending on a consolidated basis during the quarter. For the 2006 period, the consolidated SG&A expense ratio was 14.2%, decreasing 70 basis points from 14.9% for the 2005 period. Expenses related to the litigation settlement and Hurricane Katrina increased the SG&A expense ratio 70 basis points for the 2005 period. The consolidated SG&A expense ratio is expected to improve and be in the range of 13.5% to 14.5% for the full year 2006 as revenue growth continues to outpace increases in administrative spending.
Our Government and Commercial segments bear direct and indirect overhead SG&A expenses. We allocate indirect overhead expenses shared by the two segments primarily as a function of revenues. As a result, the profitability of each segment is interdependent.
SG&A expenses in the Government segment increased $125.5 million, or 45.1%, during the 2006 quarter compared to the 2005 quarter. For the 2006 period, SG&A expenses of $1,239.1 million increased $579.3 million, or 87.8%, from the 2005 period. These increases resulted from higher expenses associated with the infrastructure build out of our expanded Medicare offerings in the latter half of 2005 and early 2006.
The Government segment SG&A expense ratio decreased 310 basis points from 13.2% for the 2005 quarter to 10.1% for the 2006 quarter. Expenses related to the litigation settlement and Hurricane Katrina increased the SG&A expense ratio 160 basis points for the 2005 quarter. After considering the effect of the litigation and hurricane expenses, the decrease from the 2005 quarter to the 2006 quarter resulted from higher expenses associated with the infrastructure build out of our expanded Medicare offerings in the latter half of 2005 and early 2006.
 
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For the 2006 period, the Government segment SG&A expense ratio of 11.6% decreased 10 basis points from 11.7% for the 2005 period. Expenses related to the litigation settlement and Hurricane Katrina increased the SG&A expense ratio 60 basis points for the 2005 period. After considering the effect of the litigation and hurricane expenses, the increase from the 2005 period to the 2006 period resulted from higher spending associated with the Medicare expansion. In particular, marketing expenses and customer service costs per member were significantly higher in the 2006 period as compared to the 2005 period. We anticipate that the SG&A expense ratio will continue to improve in the last quarter of 2006 as compared to the first half of 2006 as average membership and related revenue associated with the Medicare expansion have reached the levels contemplated by the now complete build-out of infrastructure and support functions, providing more leverage against administrative costs.
The Commercial segment SG&A expenses decreased $11.9 million, or 3.5%, during the 2006 quarter compared to the 2005 quarter. The Commercial segment SG&A expenses increased $39.1 million, or 4.2%, during the 2006 period compared to the 2005 period. The Commercial segment SG&A expense ratio increased 50 basis points from 20.2% for the 2005 quarter to 20.7% for the 2006 quarter. For the 2006 period, the Commercial segment SG&A expense ratio of 20.0% increased 140 basis points from 18.6% for the 2005 period. Expenses related to the litigation settlement and Hurricane Katrina increased the SG&A expense ratio 230 basis points for the 2005 quarter and 80 basis points for the 2005 period. After considering the effect of the litigation and hurricane expenses, the increase in the 2006 quarter and 2006 period primarily resulted from an increase in the percentage of small group members comprising our total fully insured membership as well as the continued shift in the mix of membership towards ASO. At September 30, 2005, 37% of our Commercial segment medical membership related to ASO business compared to 46% at September 30, 2006. Small group accounts bear a higher SG&A ratio than larger group accounts and ASO business bears a significantly higher SG&A ratio than fully insured business.
Depreciation and Amortization
Depreciation and amortization for the 2006 quarter totaled $37.7 million compared to $34.1 million for the 2005 quarter, an increase of $3.6 million, or 10.6%. Depreciation and amortization for the 2006 period totaled $109.2 million compared to $95.1 million for the 2005 period, an increase of $14.1 million, or 14.8%. The increase resulted primarily from capital expenditures related to the Medicare expansion.
Interest Expense
Interest expense was $17.0 million for the 2006 quarter, compared to $10.1 million for the 2005 quarter, an increase of $6.9 million. Interest expense was $47.3 million for the 2006 period, compared to $29.0 million for the 2005 period, an increase of $18.3 million. This increase primarily resulted from higher interest rates and higher average outstanding debt.
Income Taxes
Our effective tax rate during the 2006 quarter of 36.2% increased 6.4% compared to the 29.8% effective tax rate in the 2005 quarter. The higher effective tax rate for the 2006 quarter reflects the growth in pretax income outpacing the growth in tax-exempt investment income. Our effective tax rate during the 2006 period of 36.2% increased 12.4% compared to the 23.8% effective tax rate in the 2005 period. The higher effective tax rate for the 2006 period is primarily due to the resolution of a contingent tax gain of $22.8 million in the first quarter of 2005 in connection with the expiration of the statute of limitations on an uncertain tax position related to the 2000 tax year which did not recur in 2006. We expect the full year 2006 effective tax rate to be in the range of 35% to 37%.
 
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Membership
The following table presents our medical and specialty membership at September 30, 2006, June 30, 2006, March 31, 2006, and at the end of each quarter in 2005:
 
| | 2006 | | 2005
| | Sept. 30 | | June 30 | | March 31 | | Dec. 31 | | Sept. 30 | | June 30 | | March 31
Medical Membership: | | | | | | | | | | | | | |
Government segment: | | | | | | | | | | | | | |
Medicare Advantage | | 993,000 | | 959,800 | | 741,200 | | 557,800 | | 503,100 | | 474,300 | | 449,900
Medicare PDP | | 3,521,000 | | 3,458,800 | | 1,959,000 | | — | | — | | — | | —
Total Medicare | | 4,514,000 | | 4,418,600 | | 2,700,200 | | 557,800 | | 503,100 | | 474,300 | | 449,900
TRICARE | | 1,721,300 | | 1,732,600 | | 1,724,700 | | 1,750,900 | | 1,747,100 | | 1,733,600 | | 1,723,400
TRICARE ASO | | 1,141,400 | | 1,141,900 | | 1,149,300 | | 1,138,200 | | 1,127,300 | | 1,142,800 | | 1,148,400
Total TRICARE | | 2,862,700 | | 2,874,500 | | 2,874,000 | | 2,889,100 | | 2,874,400 | | 2,876,400 | | 2,871,800
Medicaid | | 412,600 | | 418,500 | | 427,000 | | 457,900 | | 459,400 | | 477,900 | | 477,200
Total Government | | 7,789,300 | | 7,711,600 | | 6,001,200 | | 3,904,800 | | 3,836,900 | | 3,828,600 | | 3,798,900
Commercial segment: | | | | | | | | | | | | | |
Fully insured | | 1,779,900 | | 1,893,100 | | 1,864,200 | | 1,999,800 | | 2,007,400 | | 2,021,300 | | 2,039,300
ASO | | 1,512,000 | | 1,420,800 | | 1,395,200 | | 1,171,000 | | 1,170,500 | | 1,178,400 | | 1,180,100
Total Commercial | | 3,291,900 | | 3,313,900 | | 3,259,400 | | 3,170,800 | | 3,177,900 | | 3,199,700 | | 3,219,400
Total medical members | | 11,081,200 | | 11,025,500 | | 9,260,600 | | 7,075,600 | | 7,014,800 | | 7,028,300 | | 7,018,300
Specialty Membership: | | | | | | | | | | | | | |
Commercial segment | | 1,899,700 | | 1,894,900 | | 1,882,300 | | 1,902,100 | | 1,855,500 | | 1,836,100 | | 1,824,100
Liquidity
Our primary sources of cash include receipts of premiums, administrative services fees, investment income, as well as proceeds from the sale or maturity of our investment securities and from borrowings. Our primary uses of cash include disbursements for claims payments, SG&A expenses, interest expense, taxes, purchases of investment securities, capital expenditures, acquisitions, and payments on borrowings. Because premiums generally are collected in advance of claim payments by a period of up to several months in many instances, our business should normally produce positive cash flows during a period of increasing enrollment. Conversely, cash flows would be negatively impacted during a period of shrinking enrollment. We have recently been experiencing improving operating cash flows associated with growth in Medicare enrollment.
Cash and cash equivalents increased to $1,181.2 million at September 30, 2006 from $732.0 million at December 31, 2005. The change in cash and cash equivalents for the nine months ended September 30, 2006 and 2005 is summarized as follows:
 
| | 2006 | | | 2005 |
| | (in thousands) |
Net cash provided by operating activities | | $ | 1,151,811 | | | $ | 860,866 |
Net cash used in investing activities | | | (1,831,046 | ) | | | (607,626 | )
Net cash provided by financing activities | | | 1,128,453 | | | | 145,617 |
Increase in cash and cash equivalents | | $ | 449,218 | | | $ | 398,857 |
Cash Flow from Operating Activities
Our operating cash flows for the 2005 period were significantly impacted by the timing of the Medicare premium remittance which is payable to us on the first day of each month. When the first day of a month falls on a weekend or holiday, with the exception of January 1 (New Year’s Day), we receive this payment at the end of the previous month. In addition, when October 1 falls on a weekend, CMS may, at its discretion, withhold the reimbursement payment until the first Monday in October. CMS exercised its option to withhold the reimbursement in 2006, as October 1 fell on a weekend and the October reimbursement payment was not received until October 2, 2006. However, in 2005 October 1 also fell on a weekend but Medicare receipts for October 2005 of $384.8 million were received on September 30, 2005. Therefore, the 2005 period included ten monthly Medicare payments compared to only nine monthly Medicare payments during the 2006 period.
 
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The increase in operating cash flows resulted from Medicare enrollment growth, improved earnings, and the timing of cash flows associated with our new Medicare Part D offering. Our Part D results related to both stand-alone PDP and MA-PD offerings reflect provisions for net amounts payable to CMS of $432.5 million under the risk corridor terms of our contracts with CMS. The risk corridor amount, payable in 2007, is expected to reach between $600 million to $800 million by December 31, 2006. This amount primarily reflects favorable experience on allowable risk corridor costs during the second half of 2006 compared to expectations set out in our original annual bid for 2006 contracts with CMS.
Comparisons of our operating cash flows also are impacted by changes in our working capital. The most significant drivers of changes in our working capital are typically the timing of receipts for premiums and administrative services fees and payments of medical expenses. We illustrate these changes with the following summary of receivables and medical and other expenses payable.
The detail of total net receivables was as follows at September 30, 2006 and December 31, 2005:
 
| | September 30, 2006 | | | December 31, 2005 | | | Change |
| | (in thousands) |
TRICARE: | | | | | | | | | | | |
Base receivable | | $ | 464,541 | | | $ | 509,444 | | | $ | (44,903 | )
Change orders | | | 13,678 | | | | 32,285 | | | | (18,607 | )
TRICARE subtotal | | | 478,219 | | | | 541,729 | | | | (63,510 | )
Medicare | | | 183,397 | | | | 63,931 | | | | 119,466 |
Commercial and other | | | 133,551 | | | | 165,549 | | | | (31,998 | )
Allowance for doubtful accounts | | | (50,163 | ) | | | (32,557 | ) | | | (17,606 | )
Total net receivables | | $ | 745,004 | | | $ | 738,652 | | | $ | 6,352 |
Reconciliation to cash flow statement: | | | | | | | | | | | |
Receivables from acquisition | | | | | | | | | | | (843 | )
Change in receivables per cash flow statement | | | | | | | | | | $ | 5,509 |
TRICARE base receivables primarily consist of estimated amounts owed from the federal government for claims incurred including claims incurred but not reported, or IBNR, and underwriting fees. The decrease in base receivable resulted primarily from a decrease in our estimate of IBNR partially offset by an increase in underwriting fee receivables and an increase in the risk share receivable associated with the second option period. The $18.6 million decrease in TRICARE change order receivables resulted from the collection of receivables related to an equitable adjustment to the contract price negotiated in late 2005 for services not originally specified in the contract.
The $119.5 million increase in Medicare receivables as of September 30, 2006 as compared to December 31, 2005 primarily resulted from (1) growth in Medicare membership, and (2) an increase in receivables associated with CMS’s risk adjustment model.
The detail of medical and other expenses payable was as follows at September 30, 2006 and December 31, 2005:
 
| | September 30, 2006 | | December 31, 2005 | | Change |
| | (in thousands) |
IBNR (1) | | $ | 1,697,393 | | $ | 1,074,489 | | $ | 622,904 |
TRICARE claims payable (2) | | | 428,555 | | | 514,426 | | | (85,871 | )
Reported claims in process (3) | | | 69,502 | | | 67,065 | | | 2,437 |
Other medical expenses payable (4) | | | 367,493 | | | 253,702 | | | 113,791 |
Total medical and other expenses payable | | $ | 2,562,943 | | $ | 1,909,682 | | $ | 653,261 |
Reconciliation to cash flow statement: | | | | | | | | | |
Medical and other expenses payable from acquisition | | | | | | | | | (21,198 | )
Change in medical and other expenses payable per cash flow statement | | | | | | | | $ | 632,063 |

(1) | IBNR represents an estimate of medical expenses payable for claims incurred but not reported (IBNR) at the balance sheet date. The level of IBNR is primarily impacted by membership levels, medical claim trends and the receipt cycle time, which represents the length of time between when a claim is initially incurred and when the claim form is received (i.e. a shorter time span results in a lower IBNR).
 
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(2) | TRICARE claims payable includes all claim activity associated with TRICARE, including IBNR and payables for sharing risk with the federal government for cost overruns.
(3) | Reported claims in process represents the estimated valuation of processed claims that are in the post claim adjudication process, which consists of administrative functions such as audit and check batching and handling.
(4) | Other medical expenses payable includes capitation and pharmacy payables. The balance due to our pharmacy benefit administrator fluctuates due to bi-weekly payments and the month-end cutoff.
Medical and other expenses payable primarily increased during 2006 due to growth in Medicare membership and to a lesser extent medical claims inflation.
Cash Flow from Investing Activities
We reinvested a portion of our operating cash flows in investment securities, primarily short-duration fixed income securities, totaling $807.8 million in the 2006 period. Our ongoing capital expenditures primarily relate to our information technology initiatives and administrative facilities necessary for activities such as claims processing, billing and collections, medical utilization review, and customer service. Total capital expenditures, excluding acquisitions, were $136.6 million in the 2006 period compared to $112.3 million in the 2005 period. The increased spending in 2006 primarily resulted from our Medicare expansion initiatives. Excluding acquisitions, we expect our total capital expenditures in 2006 to range between $190 million and $200 million.
During the 2006 period, we paid $26.4 million, net of $43.6 million of cash acquired, related to acquisitions, primarily the May 1, 2006 acquisition of CHA Health. During the 2005 period, we paid $352.8 million, net of $92.1 million of cash acquired, to acquire CarePlus Health Plans of Florida, or CarePlus.
Cash Flow from Financing Activities
During the 2006 period, we issued $500 million of 6.45% senior notes due June 1, 2016. Our net proceeds, reduced for the discount and cost of the offering were $494.4 million. We used a portion of these net proceeds from the offering for the repayment of the outstanding balance under our credit agreement, which at the time of the issuance was $200 million, and the repayment of our $300 million of 7.25% senior notes which matured on August 1, 2006.
During the 2006 period, our borrowings of $250 million and repayments of $300 million under our old and new credit agreements related to the timing of our senior notes issuance and repayment and the anticipation of funding additional capital into certain subsidiaries during 2006 in conjunction with anticipated growth in Medicare revenues. During the 2005 period, we borrowed $294 million to finance the CarePlus acquisition and repaid $294 million under our 5-year $600 million credit agreement.
As described in Note 2 to the condensed consolidated financial statements included in this report, with respect to the new Medicare prescription drug program effective January 1, 2006, we received subsidies from CMS in excess of related withdrawals for claims paid of $57.0 million during the 2006 period.
The remainder of the cash provided by financing activities in the 2006 and 2005 periods resulted primarily from the change in the securities lending payable. The increase in securities lending coincides with a change in banking vendors and higher average balances of investments to lend.
Senior Notes
In May 2006, we issued $500 million of 6.45% senior notes due June 1, 2016, as discussed above. We paid $300 million when our 7.25% senior notes matured on August 1, 2006. Our senior notes and related swap agreements are more fully-discussed in Note 9 to the condensed consolidated financial statements.
Credit Agreement
On July 14, 2006, we replaced our existing 5-year $600 million unsecured revolving credit agreement (“old credit agreement”) with a new 5-year $1.0 billion unsecured revolving credit agreement (“new credit agreement”). We entered into the new credit agreement for general corporate purposes. Under the new credit agreement, at our option, we can borrow on either a competitive advance basis or a revolving credit basis. The revolving credit portion bears interest at either a fixed rate or floating rate based on LIBOR plus a spread. The spread, which varies depending on our credit ratings, ranges from 27 to 80 basis points. We also pay an annual facility fee regardless of utilization. This facility fee, currently 10 basis points, may fluctuate between 8 and 20 basis points, depending upon our credit ratings. In addition, a utilization fee of 10 basis points is payable for any day in which borrowings under the facility exceed 50% of the total $1 billion commitment. The competitive advance portion of any borrowings will bear interest at market rates prevailing at the time of borrowing on either a fixed rate or a floating rate basis, at our option.
 
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The new credit agreement contains customary restrictive and financial covenants as well as customary events of default, including financial covenants, regarding the maintenance of a minimum level of net worth and a maximum leverage ratio. The terms of the new credit agreement also include standard provisions related to conditions of borrowing, including a customary material adverse effect clause which could limit our ability to borrow. We have not experienced a material adverse effect and we know of no circumstances or events which would be reasonably likely to result in a material adverse effect. At this time, we do not believe the material adverse effect clause poses a material funding risk to us.
In addition, we have outstanding letters of credit of $3.4 million secured under the new credit agreement. No amounts have ever been drawn on these letters of credit. As of September 30, we had $846.6 million of remaining borrowing capacity under the new credit agreement. We have other relationships, including financial advisory and banking, with some parties to the new credit agreement.
Other Borrowings
Other borrowings of $3.2 million at September 30, 2006 represent financing for the renovation of a building, bear interest at 2% per annum, are collateralized by the building, and are payable in various installments through 2014.
Shelf Registration
On March 31, 2006, we filed a universal shelf registration statement with the SEC. We are considered a “well known seasoned issuer” under the Securities Offering Reform Act that became effective in December 2005. The universal shelf registration allows us to sell our debt or equity securities, from time to time, with the amount, price and terms to be determined at the time of the sale. The net proceeds from any future sales of our securities under the universal shelf registration may be used for our operations and for other general corporate purposes, including repayment or refinancing of borrowings, working capital, capital expenditures, investments, acquisitions, or the repurchase of our outstanding securities.
Liquidity Requirements
We believe our cash balances, investment securities, operating cash flows, access to debt and equity markets and borrowing capacity, taken together, provide adequate resources to fund ongoing operating and regulatory requirements, to fund future expansion opportunities and capital expenditures in the foreseeable future, and to refinance debt as it matures.
Regulatory Requirements
Certain of our subsidiaries operate in states that regulate the payment of dividends, loans, or other cash transfers to Humana Inc., our parent company, and require minimum levels of equity as well as limit investments to approved securities. The amount of dividends that may be paid to Humana Inc. by these subsidiaries, without prior approval by state regulatory authorities, is limited based on the entity’s level of statutory income and statutory capital and surplus. In most states, prior notification is provided before paying a dividend even if approval is not required.
As of September 30, 2006, we maintained aggregate statutory capital and surplus of $1,769.7 million in our state regulated subsidiaries. Each of these subsidiaries was in compliance with applicable statutory requirements which aggregated $1,214.1 million. Although the minimum required levels of equity are largely based on premium volume, product mix, and the quality of assets held, minimum requirements can vary significantly at the state level. Given our premium growth in 2006 resulting from the expansion of our Medicare products, capital requirements increased. We expect to fund these increased requirements with capital contributions from Humana Inc., our parent company, in the range of $165 million to $215 million in the fourth quarter of 2006.
Most states rely on risk-based capital requirements, or RBC, to define their required levels of equity discussed above. RBC is a model developed by the National Association of Insurance Commissioners to monitor an entity’s solvency. This calculation indicates recommended minimum levels of required capital and surplus and signals regulatory measures should actual surplus fall below these recommended levels. If RBC were adopted by the remaining states and Puerto Rico at September 30, 2006, each of our subsidiaries would be in substantial compliance and we would have $444.3 million of aggregate capital and surplus above any of the levels that require corrective action under RBC, or individual state requirements.
 
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Item 3. Quantitative and Qualitative Disclosure about Market Risk
No material changes have occurred in our exposures to market risk since the date of our Annual Report on Form 10-K for the fiscal year ended December 31, 2005.
Item 4. Controls and Procedures
Under the supervision and with the participation of our Chief Executive Officer, or CEO, our Chief Financial Officer, or CFO, and our principal accounting officer, we carried out an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures for the quarter ended September 30, 2006.
Based on our evaluation, our CEO, CFO and principal accounting officer concluded that our disclosure controls and procedures are effective, at a reasonable assurance level, in timely alerting them to material information required to be included in our periodic SEC reports.
There have been no significant changes in the Company’s internal control over financial reporting that occurred during the Company’s last fiscal quarter that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.
 
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Part II. Other Information
 
Item 1: | | Legal Proceedings
| | For a description of the litigation and legal proceedings pending against us, see “Legal Proceedings” in Note 10 to the condensed consolidated financial statements beginning on page 16 of this Form 10-Q.
Item 1A. | | Risk Factors
The Risk Factors included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2005 as filed with the SEC on March 3, 2006 have not materially changed. Some of the risks which may be relevant to us could include:
 
| • | | if the premiums we charge are insufficient to cover the cost of health care services delivered to our members, or if our estimates of medical claim reserves based upon our estimates of future medical claims are inadequate, our profitability could decline;
 
| • | | if we do not design and price our products properly and competitively, our membership and profitability could decline;
 
| • | | if we fail to effectively implement our operational and strategic initiatives, our business could be materially adversely affected;
 
| • | | if we fail to properly maintain the integrity of our data, to strategically implement new information systems, or to protect our proprietary rights to our systems, our business could be materially adversely affected;
 
| • | | we are involved in various legal actions, which, if resolved unfavorably to us, could result in substantial monetary damages;
 
| • | | as a government contractor, we are exposed to additional risks that could adversely affect our business or our willingness to participate in government health care programs;
 
| • | | our industry is currently subject to substantial government regulation, which, along with possible increased governmental regulation or legislative reform, increases our costs of doing business and could adversely affect our profitability;
 
| • | | any failure to manage administrative costs could hamper profitability;
 
| • | | any failure by us to manage acquisitions, and other significant transactions successfully could harm our financial results, business and prospects;
 
| • | | if we fail to develop and maintain satisfactory relationships with the providers of care to our members, our business could be adversely affected;
 
| • | | if we fail to manage prescription drug programs successfully, our financial results could suffer;
 
| • | | our ability to obtain funds from our subsidiaries is restricted;
 
| • | | downgrades in our debt ratings, should they occur, may adversely affect our business, financial condition and results of operations; and
 
| • | | increased litigation and negative publicity could increase our cost of doing business.
This list of important factors is not intended to be exhaustive. A further list and description of some of these risks and uncertainties can be found in our reports filed with the SEC from time to time, including our annual reports on Form
10-K and quarterly reports on Form 10-Q. Any or all forward-looking statements we make may turn out to be wrong. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. Except to the extent otherwise required by federal securities laws, we do not undertake to publicly update or revise any forward-looking statements.
 
Item 2: | | Unregistered Sales of Equity Securities and Use of Proceeds
| | None.
Item 3: | | Defaults Upon Senior Securities
| | None.
 
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Item 6: | | Exhibits | |
| | 12 | | Computation of ratio of earnings to fixed charges.
| | 31.1 | | CEO certification pursuant to Section 302 of Sarbanes–Oxley Act of 2002.
| | 31.2 | | CFO certification pursuant to Section 302 of Sarbanes–Oxley Act of 2002.
| | 32 | | CEO and CFO certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
 
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SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
 
| | HUMANA INC.
| | (Registrant)
Date: November 7, 2006 | | By: | | /S/ STEVEN E. MCCULLEY
| | | | Steven E. McCulley
| | | | Vice President and Controller
| | | | (Principal Accounting Officer)
Date: November 7, 2006 | | By: | | /S/ ARTHUR P. HIPWELL
| | | | Arthur P. Hipwell
| | | | Senior Vice President and
| | | | General Counsel
 
35

Exhibit 12
Humana Inc.
Computation of Ratio of Earnings to Fixed Charges
 
| | For the nine months ended September 30, 2006 | | For the twelve months ended December 31, |
| | | | 2005^(1) | | 2004^(1) | | 2003^(1) | | 2002^(1) | | 2001^(1) | |
| | (Dollars in thousands) | |
Income before income taxes | | $ | 520,904 | | $ | 402,880 | | $ | 399,378 | | $ | 336,213 | | $ | 203,546 | | $ | 176,952 | |
Fixed charges | | | 72,902 | | | 66,434 | | | 49,246 | | | 40,972 | | | 44,349 | | | 52,010 | |
Total earnings | | $ | 593,806 | | $ | 469,314 | | $ | 448,624 | | $ | 377,185 | | $ | 247,895 | | $ | 228,962 | |
Interest charged to expense | | $ | 47,335 | | $ | 39,315 | | $ | 23,172 | | $ | 17,367 | | $ | 17,252 | | $ | 25,302 | |
One-third of rent expense | | | 25,567 | | | 27,119 | | | 26,074 | | | 23,605 | | | 27,097 | | | 26,708 | |
Total fixed charges | | $ | 72,902 | | $ | 66,434 | | $ | 49,246 | | $ | 40,972 | | $ | 44,349 | | $ | 52,010 | |
Ratio of earnings to fixed charges (2)(3) | | | 8.1x | | | 7.1x | | | 9.1x | | | 9.2x | | | 5.6x | | | 4.4x | |

Notes |
(1) | We adopted Statement of Financial Accounting Standards No. 123 (revised 2004), Share-Based Payment, or SFAS 123R on January 1, 2006. We have adjusted prior period amounts to reflect the effect of expensing stock awards under the modified retrospective application method of SFAS 123R.
(2) | For the purposes of determining the ratio of earnings to fixed charges, earnings consist of income before income taxes and fixed charges. Fixed charges include gross interest expense, amortization of deferred financing expenses and an amount equivalent to interest included in rental charges. One-third of rental expense represents a reasonable approximation of the interest amount.
(3) | There are no shares of preferred stock outstanding.

Exhibit 31.1
CERTIFICATION PURSUANT TO SECTION 302 OF SARBANES-OXLEY ACT OF 2002
I, Michael B. McCallister, principal executive officer of Humana Inc., certify that:
1. I have reviewed this Quarterly Report of Humana Inc. (the “Company”) on Form 10-Q for the period ending September 30, 2006;
2. Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;
3. Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report;
4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of the annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
 
Date: November 7, 2006
Signature: | | /s/ Michael B. McCallister

Michael B. McCallister
Principal Executive Officer

Exhibit 31.2
CERTIFICATION PURSUANT TO SECTION 302 OF SARBANES-OXLEY ACT OF 2002
I, James H. Bloem, principal financial officer of Humana Inc., certify that:
1. I have reviewed this Quarterly Report of Humana Inc. (the “Company”) on Form 10-Q for the period ending September 30, 2006;
2. Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;
3. Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report;
4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of the annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
 
Date: November 7, 2006
Signature: | | /s/ James H. Bloem

James H. Bloem
Principal Financial Officer

Exhibit 32
CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED
PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Quarterly Report of Humana Inc. (the “Company”) on Form 10-Q for the period ending September 30, 2006 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned hereby certifies, pursuant to 18 U.S.C. Sec. 1350, as adopted pursuant to Sec. 906 of the Sarbanes-Oxley Act of 2002, in his capacity as an officer of Humana Inc., that:
(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.
 
/s/ Michael B. McCallister

Michael B. McCallister
Principal Executive Officer

November 7, 2006
/s/ James H. Bloem

James H. Bloem
Principal Financial Officer

November 7, 2006
A signed original of this written statement required by Section 906 has been provided to Humana Inc. and will be retained by Humana Inc. and furnished to the Securities and Exchange Commission or its staff upon request.