An ambulance company may give you an “Advance Beneficiary Notice of Noncoverage.” They provide this notice when they believe you are getting the ambulance in a non-emergency situation or if the ambulance believes Medicare won’t pay for the service.This notice doesn’t require a signature, but when you get this document, you can expect Medicare won’t cover the cost. So when you get this form, you’re acknowledging financial responsibility for the cost of the ambulance.