Medicare Glossary

Benefit Period

The way Medicare measures your use of hospital and skilled nursing facility (SNF) services under Part A. A benefit period begins the day you are admitted as an inpatient and ends when you have been out of the hospital or SNF for 60 consecutive days. There is no limit to the number of benefit periods you can have.

Lifetime Reserve Days

Under Medicare Part A, you have 60 additional inpatient hospital days you can use over your lifetime after you use up the regular covered days in a benefit period. Once used, these days cannot be renewed. You pay a daily coinsurance for each lifetime reserve day.

Skilled Nursing Facility (SNF)

A facility that provides short-term skilled care and therapy after a qualifying 3-day inpatient hospital stay. Medicare Part A covers SNF care for up to 100 days per benefit period, with no copay for days 1–20 and a daily coinsurance for days 21–100.

Also known as: SNF, Nursing home (short-term)