Why air ambulance is different
Air-ambulance providers are regulated as "air carriers" under the federal Airline Deregulation Act (ADA) of 1978. The ADA preempts state regulation of air-carrier rates, routes, and services. This preemption blocked states from passing balance-billing laws covering air ambulance, even though many tried.
The federal No Surprises Act provides the only patient-protection layer for OON air-ambulance services. PHSA §2799A-5 limits patient cost-sharing for air-ambulance services to the in-network cost-share equivalent.
How NSA applies
- The patient pays only the in-network cost-share for OON air-ambulance services covered by NSA.
- The provider and plan resolve the OON payment dispute through Federal IDR (45 CFR §149.510), following the same procedural clock as other NSA disputes.
- NSA applies regardless of state — including states that have ground-ambulance balance-billing laws. The state laws don't reach air ambulance because of ADA preemption.
What patients should do
- File an NSA complaint with the CMS Help Desk at 1-800-985-3059 within 90 calendar days of when you knew or should have known of the violation.
- Pay only your in-network cost-share. The provider cannot collect more.
- If your plan is self-funded ERISA, also file with DOL/EBSA. If state-regulated, file with your state DOI (even though state law can't reach the rate, the DOI can still channel your complaint into federal enforcement).
What about Medicare / Medicaid patients?
NSA does not cover Medicare, Medicaid, TRICARE, or VA. Each program has its own beneficiary- protection rules. Medicare beneficiaries should call 1-800-MEDICARE for assistance with an air-ambulance bill.
Related healthcare resources
Informational, not medical, legal, or insurance advice. Consult a healthcare-billing attorney or patient-advocate before acting on a No Surprises Act dispute. The free CMS NSA complaint pathway is 1-800-985-3059.