Medicare Supplement insurance (Medigap) will fill in some (or all) of the out-of-pocket costs you have to pay if you have Original Medicare (Parts A & B) coverage. The 10 standardized plans cover varying degrees of your Original Medicare deductibles, copays, and coinsurance. Medicare Supplement plans are labeled: A, B, C, D, F, high deductible F, G, K, L, M, N—not to be confused with Medicare Parts A, B, C and D.

    Benefit Period

    is the way the Original Medicare program measures your use of inpatient hospital and skilled nursing facility (SNF) services. It begins the day that you enter a hospital or SNF and ends when you have not received inpatient hospital or Medicare-covered skilled care in a SNF for 60 days in a row.
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