Medicare covers ambulance transport only when the trip meets the medical necessity standard set out at 42 CFR 410.40, and CMS and its contractors treat repetitive, scheduled non-emergent transport, particularly recurring runs to dialysis, as a defined program integrity target. A run sheet that fails to document why the patient could not travel by any other means, or a trip billed to a destination Medicare does not cover, exposes the ambulance provider to a recoupment demand that can reach far beyond the claims a reviewer actually pulled.
The Medical Necessity Standard
Medical necessity is established when the patient's condition makes any other method of transportation contraindicated. Under the Medicare Benefit Policy Manual, a beneficiary is bed-confined only if unable to get up from bed without assistance, unable to ambulate, and unable to sit in a chair or wheelchair, and CMS is explicit that bed-confinement alone is neither sufficient nor necessary to establish coverage. It is one factor among several a reviewer weighs. A physician's order for the transport carries weight but does not, on its own, prove or disprove necessity. The claim still has to meet every coverage requirement, and the documentation carried on the run has to show the patient's actual clinical condition at the time of transport, not just a signature.
The Destination Requirement
Coverage runs only to the nearest appropriate facility, and only to a defined list of destinations: a hospital, a critical access hospital, a skilled nursing facility, the beneficiary's home, or a dialysis facility for a patient who requires dialysis. A physician's office is not a covered destination. When two or more facilities can treat the patient and each falls within the locality of the pickup point, mileage to any one of them is covered, but the moment a longer trip cannot be justified as the nearest appropriate option, the excess mileage and often the whole claim become vulnerable. The HHS Office of Inspector General has quantified how often this rule gets missed: a review of nonemergency transports found $8.7 million in improper payments for trips to destinations Medicare simply does not cover, with most of the problem concentrated in transports that did not originate at a skilled nursing facility.
Repetitive Transport and Run-Sheet Documentation
CMS defines a repetitive ambulance service as transportation furnished three or more round trips in a ten-day period, or at least one round trip a week for three weeks or more, the pattern typical of dialysis and long-course cancer treatment. Before furnishing repetitive, scheduled non-emergent transport, the supplier must obtain a written physician certification statement from the beneficiary's attending physician, dated no earlier than 60 days before the service, attesting that the necessity requirements are met. CMS now runs a nationwide prior authorization process for these transports. Suppliers that skip it are not blocked from billing, but every claim past the first three round trips goes to prepayment review instead. From there, a Recovery Audit Contractor or Medicare Administrative Contractor that finds a pattern of missing certifications in a sample can apply extrapolation, projecting that error rate across every repetitive transport the supplier billed in the lookback period.
A signed physician order is evidence, not proof. The run sheet has to show the patient's condition made any other transportation contraindicated, not just that a physician signed a form.
Why Early Legal Counsel Is Critical
It is critical that ambulance providers and the physicians who certify their transports promptly retain experienced healthcare defense counsel upon receiving a subpoena, audit notice, investigative request, or other government inquiry. Early legal intervention can protect the provider's rights, ensure appropriate responses to government requests, avoid inadvertent admissions, preserve relevant defenses, and allow counsel to communicate with investigators on the provider's behalf. Delaying legal representation can significantly affect the outcome of a matter and expose the provider to unnecessary risk.
How Health Law Alliance Can Help
Health Law Alliance defends ambulance providers, physicians, and other Medicare-enrolled suppliers against medical necessity denials, destination disputes, and extrapolated recoupment demands tied to repetitive non-emergent transport. Our team includes a former federal prosecutor and a former senior health plan executive, a background that informs how these audits are built and where the run-sheet record can be challenged. If your ambulance practice or physician certification has come under Medicare review, contact us for a free, confidential consultation.
