Medicare Glossary

ABN (Advance Beneficiary Notice of Noncoverage)

A written notice that a doctor or supplier gives you before providing a service that Medicare may not pay for. If you sign the ABN, you agree to pay for the service yourself if Medicare denies the claim. You have the right to refuse the service.

Also known as: ABN, Advance Beneficiary Notice

Assignment

An agreement by a doctor, supplier, or provider to accept the Medicare-approved amount as full payment for a covered service. Providers who accept assignment cannot bill you for more than that amount, aside from normal deductibles and coinsurance.