A Medicare Supplement Insurance policy (also called a Medigap policy) is health insurance sold by insurance companies to fill gaps in your original Medicare coverage.
Medigap policies are used to help assist you in paying for your copayments or deductibles of Medicare covered services.
Medicare Supplement Insurance companies can only sell you a “standardized” Medigap policy identified by letters A, B, C, D, F, High-Deductible F, G, K, L, M and N.
Since a Medicare Supplement Insurance company can only sell you a “standardized” Medigap policy each policy must offer the same basic benefits, no matter which insurance company provides the insurance.