NEWPORT BEACH, Calif. – October 20, 2004 – Health plans can now thoroughly evaluate The TriZetto Group, Inc.'s (NASDAQ: TZIX) Facets® administrative software - using their own claims data, existing systems and business processes - thanks to TriZetto's Customer Readiness Lab (CRL). The new services offered through the CRL give health plan administrators an unprecedented capability to "kick the tires" of the Facets system before they purchase it. For existing Facets customers, the CRL provides a testing environment for upgrading to the latest version of the software.

TriZetto's CRL services use the customer's own data to re-create the health plan's business environment, allowing the health plan to operate, test and benchmark TriZetto software in a setting that is realistic, but separate from the customers' live production environment. The lab also provides a controlled setting in which TriZetto, working with the health plan's IT staff, can fine-tune the performance of previously installed applications, systems and networks. For example, the CRL can be used to adjust a customer's system to handle higher processing volumes and faster network speeds.

Recently, the CRL played a crucial role in The Regence Group's decision to expand and upgrade its Facets system and move to a hosted model. Regence, which includes health plans serving nearly three million members in the Northwest and Mountain states, has been using the Facets system and HealthWeb® Suite on a licensed basis in its Idaho region for several years. After working with the CRL to conduct extensive testing of Facets Extended Enterprise, the latest version of Facets, Regence is now consolidating all four of its regional health plans onto TriZetto's flagship system, which TriZetto will host (along with the HealthWeb Suite) in its data center.

"We were able to actually see Facets Extended Enterprise at work with our data, in an environment that mirrored the operations of all four of our health plans," said David MacLeod, director of information protection and assurance for The Regence Group. "This made our decision to move to the new system an easy one. TriZetto had the resources and the expertise not only to validate, but to build and deliver our hosted solution, including Facets, our Internet platform and our other ancillary applications. We couldn't have done that on our own."

According to Patricia Gorman, executive vice president of TriZetto's Business Solutions unit, any health plan looking to purchase or upgrade their administrative software needs to know if the new system will be able to handle the demands of membership growth and increased processing volumes. The health plan also needs to know if the system will perform well and interact seamlessly with the organization's existing systems and business processes.

"With TriZetto's Customer Readiness Lab, we're able to show our customers, not just tell them, the answers to these questions," says Gorman. "Our technology experts use state-of-the-art equipment to improve software implementations and help our customers make the best overall IT decisions. This level of service - and the confidence it gives our customers as they watch our products solve their problems - stands apart in the healthcare industry."

About The Regence Group

Created in 1995, The Regence Group is the largest affiliation of healthcare plans in the Pacific Northwest/Mountain State region. It includes Regence BlueShield of Idaho, Regence BlueCross BlueShield of Oregon, Regence BlueCross BlueShield of Utah and Regence BlueShield (in Washington). Through these plans, Regence provides health-related products and services to nearly three million members. The Regence Group and its affiliate plans are not-for-profit, independent licensees of the Blue Cross and Blue Shield Association. More than one in three Americans have coverage from the Blues. For more information, visit www.regence.com.

About TriZetto

TriZetto serves the payer market, comprised of national and regional health insurance plans as well as benefits administrators, which provide transaction services to self-insured employer groups. The company offers a broad portfolio of information technology products - software, outsourcing services, and consulting services - tailored to the needs of healthcare payers. Headquartered in Newport Beach, Calif., TriZetto can be reached at (949) 719-2200 or www.trizetto.com.

This press release contains forward-looking statements that involve risks and uncertainties. The forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements may include statements about future net revenues, profits, and financial results, the market for TriZetto's services, future service offerings, industry trends, client and partner relationships, and TriZetto's operational capabilities. Actual results may differ materially from those stated in any forward-looking statements based on a number of factors, including the effectiveness of TriZetto's implementation of its business plan, the market's acceptance of TriZetto's new and existing products and services, the timing of new bookings, risks associated with management of growth, reliance on third parties to supply key components of TriZetto's services, attraction and retention of employees, variability of quarterly operating results, competitive factors, risks associated with acquisitions, changes in demand for third party products or solutions which form the basis of TriZetto's service and product offerings, financial stability of our customers, the ability of TriZetto to meet its contractual obligations to customers, including service level and disaster recovery commitments, changes in government laws and regulations and risks associated with rapidly changing technology, as well as the other risks identified in TriZetto's SEC filings, including, but not limited to, its annual report on Form 10-K and quarterly reports on Form 10-Q, copies of which may be obtained by contacting TriZetto's investor relations department at 949/719-2225 or at TriZetto's web site at www.trizetto.com. All information in this release is as of October 20, 2004. TriZetto undertakes no duty to update any forward-looking statement to conform the statement to actual results or changes in the company's expectations.

CONTACTS:

TriZetto Media Relations
Audrey Mautner
303-495-7197
audrey.mautner@trizetto.com

Schwartz Communications
Brian Bogie
781-684-0770
trizetto@schwartz-pr.com

Information

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