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 care coverage. As a Medicare Part A beneficiary, you will receive coverage for hospital expenses that are critical to your inpatient care, such as a semi-private room, meals, nursing services, medications that are part of your inpatient treatment, and any other services and supplies from the hospital.