Catalyst Rx, the pharmacy benefit management (PBM) subsidiary of Catalyst Health Solutions, Inc. (NASDAQ: CHSI), announced the award of a three-year PBM contract with Delhaize America, one of the leading supermarket operators, including the brands Food Lion and Hannaford Bros. Co. Under the terms of the contract, Catalyst will continue to manage pharmacy benefits for Food Lion's 55,000 members and on January 1, 2011, will begin administering pharmacy benefits for Hannaford Bros. Co.'s 20,000 members.

?We look forward to continuing our relationship with Catalyst and working with them to implement flexible solutions that make the most sense for Delhaize and our associates,? stated Joanne Abate, Director of Health and Wellness Strategy, Delhaize America. "We are pleased to continue providing pharmacy management services to Delhaize America and appreciate their confidence in Catalyst. We look forward to extending our services to the Hannaford Bros. associates in January," added David T. Blair, Chief Executive Officer of Catalyst Health Solutions.

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

Catalyst Health Solutions, Inc. 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 serving more than 6 million lives in the United States and Puerto Rico; HospiScript Services, LLC, one of the largest providers of pharmacy benefit management services to the hospice industry; and Immediate Pharmaceutical Services, Inc., a fully integrated prescription mail service facility in Avon Lake, Ohio. The Company's clients include self-insured employers including state and local governments, managed care organizations, unions, hospices, third-party administrators and individuals.

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, 2009 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 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.
Hai Tran, Chief Financial Officer
301-548-2900
htran@chsi.com