The plan that has the responsibility for payment of any eligible charges not covered by the primary coverage.

Coverage which provides payment for charges not covered by the primary policy or plan.

Secondary coverage pays for services and charges that the primary policy does not cover.

A term used when administering Coordination of Benefits that defines the insurance company called upon to consider second payment for services.

An insurance plan that is required to pay benefits after the primary plan has paid or denied payment for medical expenses.

Health plan that pays costs not covered by primary coverage under coordination of benefits rules. Any insurance that supplements Medicare coverage. The three main sources for secondary insurance are employers, privately purchased Medigap plans, and Medicaid. See Secondary Payer.