Updated August 6, 2026. Quick answer: the No Surprises Act protects the emergency room you were taken to. It protects the anaesthetist you never met. It protects the helicopter, by name. It does not protect the ambulance that drove you. That is not an oversight anyone has to infer — it is visible in how the statute is built, and this page shows it rather than asserting it.
Where the protection actually attaches
The federal bans are not a general rule against surprise bills. They attach to specific places, and the places are listed.
The emergency ban reaches “the emergency department of a hospital or independent freestanding emergency department”, which “shall not bill, and shall not hold liable… the participant, beneficiary, or enrollee for a payment amount… that is more than the cost-sharing requirement” (42 U.S.C. §300gg-131(a)(1)).
The facility ban reaches out-of-network providers working inside a participating health care facility — and the statute lists what counts as one, at §300gg-111(b)(2)(A)(ii):
- “A hospital (as defined in 1861(e) of the Social Security Act)”
- “A hospital outpatient department”
- “A critical access hospital”
- “An ambulatory surgical center described in section 1833(i)(1)(A)”
- “Any other facility, specified by the Secretary”
An ambulance is not on that list, and it is not a department of a hospital. The bans are written around buildings you are taken to. The vehicle that takes you is outside both of them.
Congress wrote a section for the helicopter and none for the ambulance
This is the part that settles the question. Air ambulances did not fall under the facility rules either — so Congress gave them their own section, §300gg-112, which requires that “the cost-sharing requirement with respect to such services shall be the same requirement that would apply if such services were provided by such a participating provider”, and defines the term precisely: “[t]he term ‘air ambulance service’ means medical transport by helicopter or airplane for patients.”
Helicopter or airplane. Ground ambulances appear nowhere in that section, and nowhere in the facility definitions. The legislature that was plainly thinking about medical transport wrote a protection for one kind and not the other. Whatever the reason, the gap is deliberate in the only sense that matters to a person holding the bill: it is not an ambiguity a good argument can close.
What that means when the bill arrives
If the ambulance service is out of network with your plan, the federal ceiling on what you owe simply is not there. The plan pays what it pays; the difference can be billed to you, and the in-network cost-sharing arithmetic that governs the rest of the same emergency does not govern this part of it.
The practical result is the one people find hardest to believe: a single emergency can produce a hospital bill that federal law caps and an ambulance bill from the same night that it does not. Same event, same insurance, two different legal regimes, decided by whether the service was performed in a listed building.
Why a state law may not rescue you either
A number of states have enacted their own ground-ambulance billing protections. Before assuming yours applies to you, there is a second mechanism worth understanding, because it decides the question for a very large share of insured Americans.
ERISA preempts state law that relates to an employee benefit plan. Its provisions “supersede any and all State laws insofar as they may now or hereafter relate to any employee benefit plan” (29 U.S.C. §1144(a)). There is a savings clause — nothing “shall be construed to exempt or relieve any person from any law of any State which regulates insurance” (§1144(b)(2)(A)) — which is why state insurance rules can reach an insurance company.
Then comes the clause that decides it. Under §1144(b)(2)(B), an employee benefit plan “shall not be deemed to be an insurance company or other insurer… or to be engaged in the business of insurance… for purposes of any law of any State purporting to regulate insurance companies.”
So the question is not what state you live in. It is whether your employer buys insurance or pays claims itself. If the plan is fully insured, state insurance law reaches the insurer. If your employer self-funds — as most large employers do — the plan is not an insurer to be regulated, and a state ambulance-billing statute has nothing in it to grip. Two colleagues at different companies, in the same state, in the same ambulance, can have different rights.
The card in your wallet often will not tell you which you have. The plan documents will, and so will asking your benefits department the question directly: is this plan self-funded or fully insured? It is the first thing to establish, because it determines which of the two paragraphs above is your paragraph.
The state roster we are not publishing
The useful version of this page would end with all fifty states and what each one does. We are not going to give you one we have not verified. State ground-ambulance laws differ in what they cap, whom they bind, whether they reach out-of-state services and whether they apply at all to a self-funded plan — and an unverified list of that kind reads authoritative while being wrong for the reader in the state we got wrong.
What is on this page is the federal layer, read directly from the statute, and the preemption mechanism that governs whether any state layer can apply to your plan. Your state insurance department is the right place for the state answer, and the question to ask is a narrow one: does the state ground-ambulance protection apply to a self-funded employer plan, and if not, what does it apply to?
What is still available to you
None of the gap above removes the ordinary tools, and they are not small:
- The itemised bill first — how to audit a hospital bill applies to transport charges as much as to hospital ones, and mileage and service-level codes are where errors sit.
- The hospital’s financial assistance, if the transport was hospital-affiliated — charity care obligations.
- Negotiation, which municipal and hospital-run services do engage with — how that conversation actually goes.
- The cash price question — what the self-pay rate is is worth asking even when insured, because it is sometimes lower than the balance billed.
And for the rest of the same emergency, the protections are real and worth claiming: what the No Surprises Act does cover.
Sources
42 U.S.C. §300gg-131(a)(1) (the emergency balance-billing ban), §300gg-111(b)(2)(A)(ii) (the participating health care facility list), §300gg-112 (air ambulance services and the definition of the term), and 29 U.S.C. §1144(a), (b)(2)(A) and (b)(2)(B) (ERISA preemption, the savings clause and the deemer clause) — read at the Legal Information Institute on 2026-08-06. Quotations are from the statutory text. CMS consumer pages were not used: cms.gov has returned HTTP 403 to us on every attempted path, and the statute is the operative authority regardless.
Honest gap. This page establishes that federal ground-ambulance protection does not exist and explains the preemption question that governs state protection. It does not roster the states, does not cover Medicare or Medicaid transport billing (different rules entirely, and neither was read here), does not address air ambulance disputes on their own terms, and does not cover the ground ambulance advisory work Congress commissioned separately. Any of those may change the answer for a particular person, and none of them was verified for this page.
See methodology and corrections. General information about published law, not legal advice. No advertising appears on this page and we earn nothing from it.