Catalyst Health Solutions, Inc., (NASDAQ: CHSI) today announced that it was named to Fortune's "World's Most Admired Companies" list for 2012. This is the second time the Maryland-based company has been included on the list and is one of only six companies from Maryland to receive the designation.

"Catalyst has always prided itself on having one of the strongest reputations in the industry," said Catalyst Health Solutions Chairman and Chief Executive Officer David T. Blair. "To be recognized as one of the 'World's Most Admired Companies' is a testament to the hard work of our people and we are honored to be included on the list."

To arrive at the rankings, considered to be the definitive report card on corporate reputation, Fortune worked with survey partners at Hay Group to survey 698 companies from 32 countries. To create the 58 industry lists, Hay asked executives, directors, and securities analysts to rate companies in their own industry on nine criteria ranging from investment value to social responsibility.

Fortune's complete list of "World's Most Admired Companies" is available online at www.fortune.com.

About Catalyst Health Solutions, Inc. (www.chsi.com):

Catalyst Health Solutions, Inc., the fastest growing national PBM in the U.S., is built on strong, innovative principles in the management of prescription drug benefits and provides an unbiased, client-centered philosophy resulting in industry-leading client retention rates. The Company's subsidiaries include Catalyst Rx, a full-service pharmacy benefit manager (PBM) serving more than 18 million lives in the United States and Puerto Rico; HospiScript Services, LLC, one of the largest providers of PBM services to the hospice industry; FutureScripts, LLC, a full-service PBM serving approximately one million lives in the mid-Atlantic region; and a fully integrated prescription mail service facility. The Company's clients include self-insured employers, including state and local governments, managed care organizations, unions, hospices, third-party administrators and individuals.

Forward-Looking Statements

This press release may contain "forward-looking statements" as defined in the Private Securities Litigation Reform Act of 1995. These statements involve a number of risks and uncertainties that might materially affect our results, particularly those risks referred to in our Annual Report on Form 10-K for the year ended December 31, 2010, and in our Quarterly Report on Form 10-Q for the quarter ended September 30, 2011, under "Item 1A. Risk Factors." Readers are urged to carefully review and consider the various disclosures made in our Annual Report on Form 10-K, our Forms 10-Q, and our other filings with the Securities and Exchange Commission that attempt to advise interested parties of the risks and uncertainties that may affect our business. Catalyst Health Solutions, Inc. does not undertake any obligation to update forward-looking statements, whether as a result of new information, future events, or other developments.

Catalyst Health Solutions, Inc.
Christopher T. Burns
Senior Vice President, Marketing
240.268.9666
cburns@chsi.com