ABN (Advance Beneficiary Notice)

ABNs apply to original Medicare fee-for-service patients, not Medicare Advantage members. In home health, the triggering events are initiation, reduction, or termination of care that the agency believes Medicare will not cover, most often because the care is not medically reasonable and necessary, is custodial in nature, or because the patient no longer meets benefit requirements such as homebound status or the need for intermittent skilled care. The notice must be issued before the noncovered care is furnished, early enough that the patient can make a real decision rather than sign under pressure at the door.

The form must be completed in plain language, describe the specific items or services at issue, state the reason Medicare is expected to deny, and give a good-faith cost estimate. The patient selects one of three options, including whether to have the claim submitted to Medicare anyway, then signs and dates the form and keeps a copy. If the patient chooses to have the claim submitted, the agency must file it (a demand bill) and wait for Medicare's decision before billing the patient. Blank, vague, or pre-signed forms are invalid.

Home health uses three distinct beneficiary notices, and they are not interchangeable. The ABN shifts financial liability when noncovered care will be furnished. The Home Health Change of Care Notice (HHCCN) informs the patient when specific ordered services are reduced or stopped while other covered care continues. The Notice of Medicare Non-Coverage (NOMNC) is issued when all covered services are ending and gives the patient fast-appeal rights. Some situations require more than one notice, so intake, clinical, and billing teams need a shared decision tree.

The most common errors are blanket ABNs issued to every patient at admission, which are invalid; notices delivered so late the patient has no genuine choice; vague descriptions like "nursing services" with no cost estimate; and using ABNs for Medicare Advantage patients, whose plans have their own denial and appeal processes. Agencies also forget the demand billing obligation: when the patient asks for a Medicare decision, the claim must actually be submitted with the appropriate coding, and the patient cannot be balance-billed until Medicare denies.