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) will pay for certain dental services that you get when you're in a hospital. Part A can pay for inpatient hospital care if you need to have emergency or complicated dental procedures, even though the dental care isn't covered.