Medigap
Medigap plans are lettered by the benefits they cover. This site does not sell policies and does not compare premiums.
Source: Medicare.gov, What's Medicare Supplement Insurance (Medigap)? Page read October 14, 2026.
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Definition · Medicare program and benefits
Medigap
Medigap is Medicare supplement insurance. It helps pay deductibles, coinsurance, and copayments that Original Medicare leaves to the patient. It is not a Medicare Advantage plan. A person who joins Medicare Advantage generally cannot use a Medigap policy for the same coverage.
Questions
Medigap, answered
Can Medigap and Medicare Advantage be used together?
No. Medigap supplements Original Medicare. It is not added on top of a Medicare Advantage plan.