NEWPORT BEACH, Calif. – December 17, 2004 – Health plans will soon be able to analyze proposed physician and hospital reimbursement rates and automatically upload that information to standardized contract templates, thanks to a new partnership between The TriZetto Group, Inc. (NASDAQ: TZIX) and diCarta, Inc. The companies are creating an interface between TriZetto's NetworX Modeler™, standalone software that predicts the financial impact of new or revised provider terms, and diCarta's Contracts enterprise software, which manages the full contract lifecycle. Together, the two systems will form a seamless solution for optimizing provider contracts.

TriZetto and diCarta made the decision to integrate their systems and sell the solution together in order to help healthcare payers tame the volumes of increasingly complex physician and hospital contracts that outline how various medical services are reimbursed.

"Our proven solution, combined with TriZetto's unique predictive modeling technology, provides health plans with an out-of-the-box solution that addresses an otherwise unmanageable administrative process," said Mike Kaul, president and CEO of diCarta. "Leading healthcare companies understand that automation and standardization are key to effective contract management."

With diCarta Contracts software, health plans can create new agreements drawn from a library of contract templates containing approved language and terms. The system also automatically routes non-standard language for appropriate review and approval. The health plan can then use NetworX Modeler to evaluate the medical cost impact of new or revised provider reimbursement rates, which, once final, can be uploaded into the contract. Customers that want to further maximize speed and cost savings can also use NetworX Pricer™ in conjunction with NetworX Modeler. TriZetto's NetworX Pricer automatically and accurately prices claims against the negotiated provider terms. These terms can be moved electronically between the modeler system and the pricing engine, without being entered again.

TriZetto continues to stay ahead of the curve with cutting-edge IT solutions for its customers, according to Jeff Hensley, vice president of New Technology Development for TriZetto.

"By teaming with diCarta, the industry leader in contract management, we'll be able to offer payers a unique product that can significantly improve the provider contracting process, both from a time and money standpoint," said Hensley. "To further support our product strategy, Gartner predicts that the nascent contracting management software market will explode to a $20 billion business by 2007. These startling figures only reinforce what our customers are telling us, and we're excited to be the first out of the gate with this much-needed capability."

About diCarta

diCarta, Inc. provides contract management software that delivers better contracts and more effective contracting processes for some of the world's largest, most contract-intensive enterprises. With diCarta solutions, organizations are able to reduce procurement spending, improve sales effectiveness, and enforce supplier compliance by allowing actual contracts to drive day-to-day operations. For more information about diCarta solutions, visit www.dicarta.com or call 1-888-496-2600.

About TriZetto

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

Important Notice Regarding Forward-Looking Statements

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 December 17, 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:

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

For diCarta
Dan Cahill
415-552-3999
dcahill@roaring-communications.com

Information

For more detailed information, please call 1-800-569-1222 or click on the link below. Request more information     Contact a sales rep