For many non-emergency ambulance rides, Medicare needs a signed statement from your doctor saying an ambulance is medically necessary. It's called a physician certification statement (PCS). For scheduled, repeat rides, like trips to dialysis, federal rules say the ambulance company must get one dated no more than 60 days before the ride, and the medical records must back it up.
When does Medicare cover a non-emergency ambulance ride?
Under the federal rule at 42 CFR 410.40, Medicare covers ambulance rides only when other ways of traveling aren't safe for your condition. For non-emergency rides, that generally means either:
- You're bed-confined, and it's documented that other transport isn't safe for you, or
- Your medical condition requires an ambulance, whether or not you're bed-confined.
The rule says being in bed isn't the only test. The condition has to require both the ambulance and the level of care given.
For general ambulance coverage and costs, see ambulance bills and Medicare coverage. This page is about the paperwork behind non-emergency rides.
What is a physician certification statement?
The federal rule defines it as a statement signed and dated by your attending doctor that certifies the medical need for ambulance transport. It doesn't need a special form or title.
The rule also says a signed PCS doesn't prove medical necessity by itself. The PCS and your medical records together need to explain, in detail, why you needed an ambulance.
When is a PCS required?
42 CFR 410.40 sets different rules for different kinds of rides:
Scheduled, repeat rides (like regular trips for dialysis or wound care):
- The ambulance company must get a PCS before the ride.
- The PCS must be dated no earlier than 60 days before the ride.
Unscheduled rides, or scheduled one-time rides:
- For someone living in a facility and under a doctor's care, the company must get a PCS within 48 hours after the ride.
- For someone at home, or in a facility but not under a doctor's direct care, a PCS isn't required.
- If the company can't get a doctor's signature, it can get a statement from certain other staff with personal knowledge of your condition, like a nurse, case manager, or discharge planner.
Why does this matter for my bill?
If the paperwork is missing, out of date, or too vague, Medicare may deny the claim. Then the ambulance company might bill you.
Before a ride Medicare may not cover, the company may give you an Advance Beneficiary Notice of Noncoverage (ABN). CMS says the ABN shifts potential financial responsibility to you if Medicare denies the claim. Read it closely before signing.
How can I avoid a denial for repeat rides?
If a parent needs regular ambulance rides, these steps can head off a denial:
- Ask the doctor's office whether they've sent a certification to the ambulance company.
- Ask the ambulance company whether they have a current PCS and when it expires.
- Mark the 60-day renewal on your calendar.
- Make sure the doctor's notes describe why other transport isn't safe, like needing to lie flat, needing oxygen monitoring, or being unable to sit up.
What to say to the ambulance company:
"[Patient name] gets scheduled rides to [place] [how often]. Do you have a current physician certification statement on file? What date does it expire? Is anything else needed so the claim isn't denied?"
What to say to the doctor's office:
"[Patient name]'s ambulance company needs an updated physician certification statement for repeat rides to [place]. The current one expires [date]. Can the doctor sign a new one and make sure the notes explain why other transport isn't safe?"