A. A provider should ask a patient to complete and execute an ABN if the provider of anesthesia services believes the anesthesia service may not be covered by Medicare for a number of reasons. There are strict rules and regulations pertaining to the utilization of an ABN and its submission to Medicare. The use of the ABN legally allows you to bill the Medicare Beneficiary for the non-covered services following your submission of all documents to Medicare. If the services are denied by Medicare as non-covered then you will commence to bill the patient and/or their secondary payer for the full usual and customary fee for the service. It is important to note that you should never discount your charges for any patient for any reason.