NEWPORT BEACH, Calif. – December 22, 2005 – The TriZetto Group, Inc. (Nasdaq: TZIX) today announced that that it has filed a registration statement on Form S-3 with the Securities and Exchange Commission for the resale of TriZetto's previously issued 2.75% Convertible Senior Notes due 2025, and the underlying shares of TriZetto's common stock issuable upon conversion of the notes at an initial conversion price of $18.85. The registration statement was filed to satisfy TriZetto's obligations under the registration rights agreement entered into on October 5, 2005 in connection with the sale and issuance of the notes. Neither the notes nor the underlying shares of common stock may be sold, nor may offers to buy be accepted, prior to the time that the registration statement is declared effective by the Securities and Exchange Commission.

This press release does not constitute an offer to sell or the solicitation of an offer to buy any securities.

About TriZetto

Touching nearly 40% 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, increase 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:

Investors:
Brad Samson
949-719-2220
brad.samson@trizetto.com

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