BillSherpa · Patient Advocacy · Updated 2026
Out-of-network surprise bill: your rights under the No Surprises Act explained plainly
You chose an in-network hospital. You did everything right. Then a bill arrived from an out-of-network provider you never chose — an anesthesiologist, a radiologist, an assistant surgeon. The No Surprises Act 42 U.S.C. § 300gg-111 was specifically designed to protect you from this. Here's what it covers.
What the No Surprises Act protects you from
The Act covers three main situations:
- Emergency care at any hospital. If you received emergency care at an out-of-network hospital, or if out-of-network providers treated you during an emergency, you can only be charged your in-network cost-sharing amount. The hospital and providers cannot balance-bill you for the difference between their charges and what your insurer paid.
- Non-emergency care by out-of-network providers at in-network facilities. If you were at an in-network hospital for a scheduled procedure and an out-of-network specialist was involved without your advance written consent, that specialist cannot balance-bill you above your in-network rate.
- Air ambulance services. Out-of-network air ambulance companies covered under the Act cannot balance-bill you beyond your in-network cost-sharing amounts.
Key definition — balance billing: Balance billing occurs when an out-of-network provider bills you for the difference between their full charge and what your insurer pays. Example: provider charges $5,000, insurer pays $2,000, provider bills you the remaining $3,000. The No Surprises Act prohibits this in covered situations.
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When the Act does NOT apply
The No Surprises Act has important limitations:
- It doesn't apply to ground ambulances (only air ambulances). Ground ambulance billing remains largely unregulated at the federal level.
- If you voluntarily chose an out-of-network provider for non-emergency care and signed a notice and consent form acknowledging the out-of-network status, the Act may not apply.
- It doesn't apply to care at out-of-network facilities for non-emergency situations where you had the ability to choose an in-network facility.
- It applies to most private insurance plans but not short-term health plans, health care sharing ministries, or some grandfathered plans.
How to use the Act when you receive a surprise bill
- Identify whether your situation is covered. Was it an emergency? Was it an out-of-network provider at an in-network facility? Did you sign a consent form acknowledging out-of-network status? Your answers determine whether the Act applies.
- Contact your insurance company. Tell them you received a surprise out-of-network bill and ask them to confirm you're only responsible for in-network cost-sharing. Your insurer should handle the dispute with the provider.
- Contact the provider's billing department. Reference the No Surprises Act specifically. Ask them to bill your insurance at the in-network rate and limit your responsibility to your in-network cost-sharing.
- File a complaint if needed. Go to cms.gov/nosurprises to file a complaint with the federal government if the provider refuses to comply. The complaint process can result in the provider being required to comply and potentially face civil penalties.
- Request the Independent Dispute Resolution process if your insurer and the provider can't agree. If your insurer and the out-of-network provider can't agree on a payment rate, either party can initiate a federal arbitration process. You're not directly involved — this is between your insurer and the provider — but it resolves the underlying payment dispute.
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Frequently asked questions
I received a consent form at the hospital asking me to agree to out-of-network billing. Do I have to sign it?
For emergency care and for anesthesia, radiology, pathology, and other ancillary services where patients typically don't choose the provider, providers are not allowed to obtain valid consent for out-of-network billing — the Act specifically prevents this. For non-emergency situations with genuinely voluntary provider choice, you can decline to sign and request an in-network alternative.
The bill is from a ground ambulance. Am I protected?
Not by the No Surprises Act, which only covers air ambulances. However, some states have their own surprise billing protections that cover ground ambulances. Check your state's laws. Additionally, many ground ambulance companies will negotiate or offer financial assistance programs — it's worth calling them directly.
I don't have insurance. Does the No Surprises Act help me?
The No Surprises Act is primarily designed to protect insured patients from balance billing. However, if you're uninsured, you have the right to receive a Good Faith Estimate of costs before any scheduled non-emergency care, and if the final bill significantly exceeds that estimate, you can dispute it through the Patient-Provider Dispute Resolution process.