A large carrier has decided to stop selling Medicare Advantage private fee-for-service plans in 2011.

CIGNA Corp., Philadelphia (NYSE:CI), says it will continue to offer CIGNA HealthCare of Arizona Medicare Advantage HMO and national Medicare Part D coverage in the 2011 plan year.

The company’s CIGNA HealthCare unit has decided not to renew a national Medicare Advantage Private Fee-For-Service contract.

CIGNA has about 109,000 Medicare Advantage private FFS plan enrollees, according to the Ritter Insurance Marketing blog.

Enrollees who now have CIGNA individual Medicare private FFS coverage can keep the coverage in 2011, and Medicare enrollees can buy the individual private FFS coverage until the end of the year, CIGNA says.

CIGNA will continue to market Medicare supplement products, Arizona Medicare Advantage health maintenance organization coverage, and Medicare and non-Medicare group plans aimed at employer retiree and pre-retiree benefits programs, the company says.