NEWPORT BEACH, Calif. – July 20, 2006 – The TriZetto Group Inc. (NASDAQ: TZIX) announced that Affinity Health Plan has purchased its Facets Extended Enterprise(TM) administrative system to help it efficiently manage the demands of the growing Medicaid market. Serving members in the New York Metropolitan area, Affinity is the twenty-sixth Medicaid health plan to select Facets, which is now used to process medical transactions for approximately 25 percent of the managed Medicaid market and 16 percent of the Medicare Advantage market.

"Affinity Health Plan's mission is to provide quality healthcare coverage to New Yorkers regardless of their ability to pay," said Barbara Kelman, senior vice president and chief operating officer of Affinity Health Plan. "We are hopeful that Facets' strong core functionality, as well as TriZetto's ongoing support and training, will help us become more efficient as an organization and help us better serve the special needs of our members."

According to Tony Bellomo, executive vice president of TriZetto's software unit, Medicaid and Medicare plans face unique administrative and IT challenges due to the need to comply with government regulations.

"Facets is the healthcare industry's leading claims and benefit administration solution for both government and commercial markets," said Bellomo. "We've designed Facets to be highly efficient, automated, and flexible, to help our customers tackle new business and compete successfully in a dynamic industry. That's why we've been able to establish such a large base of Medicaid and Medicare customers, and why our business continues to grow in these critical areas."

About Affinity Health Plan

Affinity Health Plan is an independent, non-profit managed care plan that serves the needs of underserved residents of the New York Metropolitan Area. Affinity provides health coverage to over 209,000 members in a service area that includes New York City, Long Island, Westchester, Rockland and Orange Counties. Affinity provides healthcare coverage through its Child Health Plus, Family Health Plus and Medicaid programs. Founded by several community health centers in 1986, Affinity was the first health plan licensed in New York State specifically to serve government-sponsored populations. It served as a model for development of the state Medicaid managed care program, and as a pilot for state premium support programs for the uninsured.

About TriZetto

Touching more than 35% of the U.S. insured population, TriZetto is distinctly focused on accelerating the ability of healthcare payers to lead the industry's transformation. The company provides premier information technology solutions that enhance its customers' revenue growth, drive their administrative efficiency, and improve the cost and quality of care for their members. Healthcare payers include national and regional health insurance plans, and benefits administrators that provide transaction services to self-insured employer groups. The company's broad array of payer-focused information technology offerings include enterprise and component software, hosting and business process outsourcing services, and consulting. Headquartered in Newport Beach, Calif., TriZetto can be reached at 949-719-2200 or at www.trizetto.com.

CONTACTS:

TriZetto Media Relations
Audrey McDill
303-495-7197
audrey.mcdill@trizetto.com

Affinity Media Relations
Max Meng
914-473-8529
mmeng@affinityplan.org