When we use a negative construction (with not) in the main clause, until means 'not before'. I won't (will not) start cooking until you come home. until three kilometres.
Medicare Part A is hospital insurance that covers inpatient hospital care and certain home care. Medicare Part A is usually free if you or your spouse paid Medicare taxes while working. If not, it can cost up to $413 each month in 2017. Hospital and skilled nursing facility stays come with deductibles and co-insurance.
Medicare Part A (Hospital Insurance) covers skilled nursing care provided in a skilled nursing facility (SNF) under certain conditions for a limited time. Medicare-covered services include, but aren't limited to: Semi-private room (a room you share with other patients) Meals.