Health Insurance
The No Surprises Act: The Federal Law Banning Most Surprise Medical Bills
By the PolicyZen Team · Updated March 2026 · 9 min read
In January 2022, a federal law quietly took effect that eliminated one of the most hated practices in American healthcare: the surprise medical bill. You go to an in-network hospital, have a procedure, and weeks later receive a bill from an out-of-network anesthesiologist or radiologist you never chose and never met.
The No Surprises Act banned this. Most patients have no idea the law exists — and because of that, many are still paying bills they legally don't owe.
Before 2022, roughly 1 in 5 emergency visits and 1 in 6 in-network hospital stays resulted in at least one surprise bill from an out-of-network provider. The average surprise bill: over $1,200. The No Surprises Act closed this loophole for most situations.
What the No Surprises Act Covers
The law protects you in three main situations:
1. Emergency Care
If you go to an emergency room — even an out-of-network ER — you can only be billed at in-network cost-sharing rates for emergency services. The hospital or ER cannot bill you at out-of-network rates, even if you had no choice about where the ambulance took you.
2. Out-of-Network Providers at In-Network Facilities
If you choose an in-network hospital or ambulatory surgery center, but an out-of-network provider participates in your care — an anesthesiologist, radiologist, pathologist, assistant surgeon, or neonatologist you didn't choose — they cannot bill you at out-of-network rates. You pay only your normal in-network cost-sharing.
3. Air Ambulance Services
Out-of-network air ambulance (medical helicopter) transport from participating providers is capped at in-network rates. Ground ambulance is notably NOT covered by the law — that gap still exists.
The Good Faith Estimate
The No Surprises Act also requires that uninsured or self-pay patients receive a Good Faith Estimate of expected costs before scheduled services. If the final bill exceeds the estimate by more than $400, you can dispute it through a patient-provider dispute resolution process.
Key right: For scheduled procedures, you can request a Good Faith Estimate from any provider. This is your legal right under the law, regardless of your insurance status. Ask for it in writing before any non-emergency procedure.
What the No Surprises Act Does NOT Cover
The law has important gaps:
- Ground ambulance — specifically excluded from the law. Surprise bills from ground ambulance remain legal and common.
- Non-emergency care at out-of-network facilities — if you choose an out-of-network hospital for a scheduled procedure, normal out-of-network rates apply.
- Dental and vision — standalone dental and vision plans aren't covered by the No Surprises Act.
- Short-term health plans and grandfathered plans — some plan types aren't fully covered.
- Bills for services you agreed in writing to pay out-of-network — providers can still bill out-of-network rates if you sign a valid consent form acknowledging the out-of-network provider and agreeing to pay their rates. Consent is only valid for non-emergency, non-ancillary services. You cannot sign away your rights for emergency care or for anesthesiologists and radiologists.
What to Do If You Receive a Surprise Bill
- Don't pay immediately. Review the bill against your Explanation of Benefits (EOB) from your insurer.
- Identify the provider. Was the biller an out-of-network provider at an in-network facility? Was it emergency care? If yes, the No Surprises Act likely applies.
- Contact your insurer. Tell them you received a bill from an out-of-network provider for care at an in-network facility (or emergency care) and ask if the No Surprises Act applies. Your insurer should be applying protections automatically — if they didn't, escalate.
- Contact the provider's billing department. Inform them that the No Surprises Act applies and that you should be billed at in-network rates. Many billing departments will correct the bill when the law is cited specifically.
- File a complaint. If the provider refuses, file a complaint at NoSurprises.cms.gov — the federal complaint portal. This is free and the provider faces federal penalties for violations.
Watch for consent form abuse: Some providers try to get patients to sign consent forms waiving No Surprises Act protections as a condition of care — including in the ER waiting room or in paperwork mixed in with routine admission forms. For emergency care and for ancillary providers like anesthesiologists, these waivers are not legally valid. You cannot waive your rights for emergency services. If you signed something that seems like a waiver, the law may still protect you — consult your state insurance commissioner or a patient advocate.
Frequently Asked Questions
What's the difference between balance billing and surprise billing?
They're often used interchangeably. Balance billing is when a provider bills you for the "balance" between what your insurer paid and their full charge. Surprise billing specifically refers to receiving bills from out-of-network providers you didn't knowingly choose — like when a surgeon is in-network but the anesthesiologist isn't. The No Surprises Act targets surprise billing; it also prohibits the balance billing that results from it in covered situations.
I got a bill before 2022. Does this law help me?
No — the No Surprises Act applies to services on or after January 1, 2022. For older bills, your options are negotiating directly with the provider, working with your insurer on your behalf, or your state's balance billing protections (many states had their own laws that predate the federal act).
How does the insurer and provider settle the payment difference?
When an out-of-network provider is paid at in-network rates, they may dispute the payment amount with the insurer through an independent dispute resolution (IDR) process created by the law. This is between the provider and the insurer — you are not involved and your cost-sharing doesn't change. The IDR process has been heavily litigated (providers sued the government over how arbitrators were instructed to decide disputes), but your protections as a patient remain intact regardless of how the provider-insurer dispute is resolved.
Does this apply to Medicare and Medicaid?
Medicare and Medicaid already had strong protections against out-of-network surprise billing before the No Surprises Act. The law primarily filled the gap for commercially insured patients (employer plans, marketplace plans, and individual plans). Medicare Advantage plans are also covered by the No Surprises Act protections.
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