medicare secondary payer rule

Understanding the Differences Between Medicare’s “No Legal Obligation to Pay” Rule and the Secondary Payer Rule

The Medicare Secondary Payer rule (“MSP”) amended the Social Security Act (Section 1862(b)) to define circumstances when Medicare has an obligation to pay only after a primary payer has paid, or can reasonably be expected to pay for a billable item or service. The intention was to shift costs from government-payer coverage to private, third-party insurance, if an individual has dual coverage. MSP outlines how these dual benefits are coordinated, but how is this applied in the context of clinical research?