Coordination of benefits (COB) is relevant for individuals with more than one primary payer. It is used to determine which insurance plan has the primary payment responsibility and the extent to which each plan covers an individual. The Medicare Secondary Payer (MSP) program exists so that Medicare is not the primary payer of claims when individuals have certain other health insurance coverages. The Benefits Coordination & Recovery Center (BCRC) acts on behalf of Medicare to collect and manage information on other types of insurance or coverage a Medicare beneficiary may have.