Advance Beneficiary Notice. A notice the hospital or doctor gives you before you're treated, telling you that Medicare will not pay for some treatment or services. The notice is given to you so that you may decide whether to have the treatment and how to pay for it.
a document indicating that the supplier has reason to believe that Medicare will not cover the piece of equipment or supply being given to a patient. It must list the item(s) and the reason(s) it will not be covered and be signed and dated by the patient (or a representative) before delivery of the item.
Advance Beneficiary Notice. A form signed by the patient before certain services are rendered, notifying him/her that Medicare may not cover this service and that the patient will be responsible for payment. The ABN was previously called the Medicare Medical Necessity Waiver.