Medicare Ambulance Fee Schedule: Base Rates, Rural Add-Ons, and Costs

The Medicare ambulance fee schedule is the national payment system Medicare uses to reimburse ground and air ambulance providers. Every covered trip is paid using a base rate tied to the level of care delivered, plus a per-mile charge for the loaded distance, adjusted for the geography of the pickup location. After you meet the 2026 Part B deductible of $283, you pay 20 percent of the Medicare-approved amount, and because every ambulance provider is required to accept assignment, you cannot be billed anything above that.¹

How Medicare Calculates What It Pays

The fee schedule was established by federal law and replaced the older cost-based and charge-based reimbursement systems. Three components go into every ground ambulance claim: a base rate tied to the service level, a per-mile payment for the distance traveled, and geographic adjustments.²

The base rate is adjusted by a Geographic Adjustment Factor tied to the ZIP code where the ambulance picks you up. The GAF accounts for regional differences in labor costs, fuel prices, and overhead. Rural and super-rural ZIP codes receive additional percentage increases on top of the GAF to keep ambulance services viable in areas with low call volumes and long distances.³

Service Levels and Their Base Rates

Medicare does not treat every ambulance ride the same. The fee schedule assigns different base rates depending on the level of medical care provided during the trip, and higher levels pay more because they require more advanced equipment and crew qualifications. The service level billed must match the care actually delivered, not just the level of the crew that arrived.³

Basic Life Support (BLS): ground transport staffed by an EMT-Basic for stable patients who need monitoring but not advanced interventions.
BLS-Emergency: the same BLS care delivered in response to an emergency call requiring immediate response.
Advanced Life Support Level 1 (ALS1): ground transport with at least one ALS assessment or intervention, such as starting an IV or cardiac monitoring, staffed by a paramedic or equivalent.
ALS1-Emergency: ALS1 care provided during an emergency response.
Advanced Life Support Level 2 (ALS2): transport involving at least three separate medication administrations by IV push or continuous infusion, or a major procedure such as endotracheal intubation, manual defibrillation, cardiac pacing, or chest decompression.
Specialty Care Transport (SCT): interfacility transfer of a critically ill or injured patient requiring care beyond a paramedic’s scope, such as critical care nursing or respiratory therapy.

Emergency versions of BLS and ALS1 carry higher base rates than their non-emergency counterparts, because the crew must respond immediately without knowing what they will find on arrival.

2026 Rate Updates and Rural Add-Ons

Medicare adjusts the fee schedule each year using an Ambulance Inflation Factor. For 2026, the AIF is 2.0 percent, calculated from the Consumer Price Index for Urban Consumers (2.7 percent) minus a productivity adjustment of 0.7 percent.⁴

Congress has also maintained temporary add-on payments for ground ambulance services: 2 percent for urban providers, 3 percent for rural providers, and 22.6 percent for super-rural providers. The Consolidated Appropriations Act of 2026 extended these add-ons through December 31, 2027. Without further legislation, they expire on January 1, 2028, and payments to providers in every setting would drop noticeably.²

Air Ambulance Rates

Helicopter and fixed-wing ambulance transport are paid under a different formula than ground services. Rather than using relative value units, the fee schedule lists air ambulance base rates and mileage rates directly. Rural air ambulance rates are set at 1.5 times the urban rate to account for the longer distances and operational challenges in remote areas.⁵

Air transport clears a higher coverage bar than ground service. Medicare pays only when your condition requires immediate, rapid transportation that a ground ambulance cannot provide, either because the pickup location is inaccessible by ground vehicle or because the distance to the nearest appropriate hospital is so great that ground transport would threaten your survival or seriously endanger your health.⁶

What You Pay Out of Pocket

After you meet the 2026 Part B deductible of $283, you pay 20 percent of the Medicare-approved amount. Your coinsurance is calculated from the fee schedule rate, not from whatever the ambulance company’s sticker price happens to be.¹

Ambulance coverage differs from many other Medicare Part B services in one important way: every ambulance provider must accept assignment. This has been mandatory since the fee schedule took effect in 2002. The provider is required to accept Medicare’s approved amount as full payment and cannot bill you for anything beyond your deductible and 20 percent coinsurance. Violating this rule exposes the provider to federal sanctions.⁷

If you receive a bill from an ambulance company asking for more than your deductible and coinsurance combined, that bill is not legitimate under Medicare rules. You can contact 1-800-MEDICARE to report it. Patients with Medigap policies or Medicare Advantage plans often find that their supplemental coverage picks up most or all of the 20 percent coinsurance.

When the Fee Schedule Actually Pays

The fee schedule only pays when the trip is a covered service in the first place. Medicare’s core requirement is medical necessity: your condition at the time of transport must be serious enough that traveling by any other means would put your health at risk. If you could have safely ridden in a car, the claim will be denied regardless of convenience or preference.⁸

Covered destinations are limited. They include hospitals, critical access hospitals, skilled nursing facilities, your home, and dialysis facilities for patients with end-stage renal disease. A doctor’s office is not a covered destination on its own. Coverage also extends only to the nearest facility equipped to handle your medical issue; if you choose a more distant hospital because you prefer the staff or your doctor practices there, Medicare will only pay what it would have cost to reach the closer one.⁶

Emergency claims are evaluated based on the information available at the moment the ambulance was called, not on what doctors later determine at the hospital. Non-emergency transport requires a physician’s order confirming that ambulance transport is medically necessary, typically because the patient is bed-confined or has another documented condition that makes other transportation dangerous. A physician’s order alone does not guarantee payment; Medicare still requires the underlying medical facts to support the claim.⁶

Patients who need regular ambulance rides, most commonly for dialysis, face additional paperwork. Medicare defines repetitive ambulance service as three or more round trips within a 10-day period, or at least one round trip per week for three or more weeks. These trips require a Physician Certification Statement signed by the attending physician, dated no more than 60 days before the transport begins. A voluntary prior authorization program lets the ambulance supplier submit the PCS and supporting documentation to the Medicare Administrative Contractor in advance, with a decision issued within seven calendar days for up to 40 round trips over 60 days.⁹

If a Claim Is Denied

Ambulance claims are denied more often than most Part B claims, particularly for non-emergency and repetitive transport. You have the right to appeal, and many denials result from incomplete documentation rather than a genuine lack of medical necessity. The first level is a redetermination filed with the Medicare Administrative Contractor by the deadline printed on your Medicare Summary Notice, and further levels are available if that redetermination upholds the denial.¹⁰

The strongest thing you can do at the first level is submit better medical documentation. Ask your physician to write a detailed letter explaining why ambulance transport was necessary for your specific condition on that specific date. Generic statements like “patient requires ambulance” carry almost no weight with reviewers; they want clinical details about your mobility, stability, and what would have happened if you had traveled by car.¹⁰

1
Medicare.gov. Ambulance Services
2
Office of the Law Revision Counsel. 42 USC 1395m – Special Payment Rules for Particular Items and Services
3
eCFR. 42 CFR Part 414 Subpart H – Fee Schedule for Ambulance Services
4
Centers for Medicare & Medicaid Services. Medicare Claims Processing Manual – Ambulance Inflation Factor for CY 2026
5
Centers for Medicare & Medicaid Services. Ambulance Fee Schedule Public Use Files
6
Centers for Medicare & Medicaid Services. Medicare Benefit Policy Manual Chapter 10 – Ambulance Services
7
eCFR. 42 CFR 414.610 – Basis of Payment
8
eCFR. 42 CFR 410.40 – Coverage of Ambulance Services
9
Centers for Medicare & Medicaid Services. Repetitive, Scheduled Non-Emergent Ambulance Transport Prior Authorization Model
10
Medicare.gov. Appeals in Original Medicare