In 2021, there was a $1,484 deductible per benefit period for inpatient hospital stays under Medicare Part A. Days 1-60 had no coinsurance. Days 61-90 had a $371 coinsurance per day, and days 91 and beyond, termed “lifetime reserve days,” had a $742 coinsurance per each day, up to 60 days over your lifetime. Beyond this, all costs are borne by the individual.