No Surprises Act: Out-of-Network Bills and Your Rights

You went to an in-network hospital, had an emergency, or received care you believed was covered — and now you're holding a bill for hundreds or thousands of dollars from a provider your insurance says is out-of-network. That bill may be illegal. The No Surprises Act, which took effect January 1, 2022, bans a practice called balance billing in several common situations. This article explains exactly what the law covers, what you owe, and how to dispute a bill that violates it.

What Is Balance Billing — and Why Does It Matter?

Balance billing happens when an out-of-network provider charges you the difference between their full billed rate and what your insurer paid. Here's how it works in practice: your insurer pays an out-of-network anesthesiologist $800 toward a $2,000 bill. Without legal protection, the anesthesiologist could bill you the remaining $1,200 — that's the "balance." The No Surprises Act (NSA) makes this illegal in specific situations. When the NSA applies, the provider can only charge you the in-network cost-sharing amount — your deductible, copay, or coinsurance as if the provider were in-network. The rest is between the provider and your insurer to negotiate.

What the No Surprises Act Covers

The NSA bans balance billing in three main situations. If your bill falls into any of these categories, you are legally protected from being charged more than your in-network cost-sharing amount.

1. Emergency Care at Any Facility

If you have a medical emergency, you cannot be balance-billed — regardless of whether the emergency room or treating provider is in your insurance network. This applies even if you were transported to an out-of-network hospital because it was the closest facility, or because it was the only option. You pay what you would pay at an in-network ER: your in-network deductible and coinsurance. Nothing more.

Real example: A nursing student sustains a needle-stick with a known contaminated needle during a clinical rotation at a hospital that is out-of-network for her insurance. She receives emergency evaluation, blood draws, and post-exposure prophylaxis. The hospital later bills her $1,800 as an out-of-network patient. A needle-stick with a dirty needle is a medical emergency — exposure to bloodborne pathogens requires immediate treatment that cannot wait. Under the NSA, that $1,800 balance bill is not legal. She owes only her in-network emergency cost-sharing amount, which under her student health plan is a $150 copay.

2. Out-of-Network Providers at In-Network Facilities

This is one of the most common surprise bill scenarios: you do everything right. You verify your hospital is in-network. You have a scheduled surgery. Afterward, you receive a separate bill from the anesthesiologist, radiologist, assistant surgeon, or pathologist — and your insurer says that provider is out-of-network.

Under the NSA, an out-of-network provider at an in-network facility cannot balance-bill you for non-emergency services unless they gave you written notice at least 72 hours before the service and you signed a consent form acknowledging the out-of-network status and agreeing to higher costs. If no written notice was given — which is the case in most surprise bill situations — the balance bill is prohibited. You pay only your in-network cost-sharing amount for that service.

3. Air Ambulance Services

If you are transported by air ambulance that is out-of-network, you are also protected from balance billing under the NSA. You pay in-network cost-sharing. The air ambulance company and your insurer handle the rest.

What the No Surprises Act Does NOT Cover

Being clear about the law's limits is just as important as knowing its protections.

• Ground ambulance: Ground ambulance is explicitly excluded from NSA protections. Legislation to address this is pending, but as of now, you can be balance-billed for out-of-network ground ambulance transport. If you receive one of these bills, your best options are to negotiate directly with the ambulance company or check whether your state has its own ground ambulance billing protections.
• Care you consented to in writing: If a provider gave you proper advance written notice (at least 72 hours before a scheduled service) and you signed a consent form agreeing to out-of-network charges, you waived your NSA protection for that service. Read anything you sign carefully before a procedure.
• Out-of-network facility charges: The NSA covers out-of-network providers at in-network facilities. If the facility itself is out-of-network, different rules apply. Choose in-network facilities when you can for non-emergency care.
• Uninsured patients: The NSA's balance billing protections apply to patients with insurance. Separate good-faith estimate rules apply to uninsured and self-pay patients.

Your Right to a Good-Faith Cost Estimate

For any scheduled (non-emergency) service, you have the right to request a good-faith cost estimate in writing before your care. This estimate must include expected charges from all providers involved — not just the primary doctor. If your final bill exceeds the estimate by more than $400, you can initiate a patient-provider dispute resolution process to challenge it. Request this estimate before any planned procedure and keep a copy. If your provider or facility refuses to provide one, that itself is worth documenting.

Other Coverage Avenues for Workplace Injuries in Clinical Settings

If you were injured at a clinical site — like the needle-stick scenario above — the NSA covers the emergency billing question. But other resources may cover costs the NSA doesn't directly reach, such as follow-up care, lost wages, or ongoing monitoring.

• Workers' compensation: If the clinical site employs you (even as an unpaid trainee in some states), the injury may be covered under their workers' comp policy.
• School clinical placement insurance: Many nursing programs, medical schools, and allied health programs carry insurance specifically for students injured at clinical sites. Contact your program director or student affairs office immediately after an injury.
• The facility's occupational health department: The hospital or clinic where the injury occurred may have an occupational health policy for on-site injuries, even involving non-employees.
• Hospital risk management: If the facility's equipment or protocols contributed to the injury, the hospital's risk management department may be the right contact for cost coverage.

Report the injury to the facility and your school as soon as possible — most of these avenues have reporting deadlines.

How to Dispute a Surprise Bill Under the No Surprises Act

If you believe your bill violates the NSA, here are the steps to take:

1. Contact the provider directly. Call or write the billing department and state clearly: "This bill appears to violate the No Surprises Act. I am requesting that this be corrected to reflect my in-network cost-sharing amount." Use the phrase "No Surprises Act" specifically — it signals that you know your rights and creates a record.
2. Contact your insurer. Your insurer can help clarify what you owe and may intervene directly with the provider. Ask them to document that the service qualifies for NSA protection.
3. File a complaint with CMS. If the provider doesn't resolve it, file a complaint with the Centers for Medicare & Medicaid Services (CMS) at cms.gov/nosurprises/consumers/file-a-complaint. Providers who violate the NSA face fines of up to $10,000 per violation. CMS complaints are taken seriously.
4. Contact your state insurance commissioner. Some states have additional balance billing protections beyond the federal law. Your state insurance commissioner's office can tell you what applies in your state and may also accept complaints.

For more detail on navigating the dispute process, see our guide on what to do when you get a surprise medical bill. If your insurer has denied the claim entirely — rather than paying at the out-of-network rate — that's a separate issue covered in our article on how to appeal a denied insurance claim.

What to Do Right Now

If you have a surprise bill in front of you, start here:

1. Identify whether the bill is for emergency care, an out-of-network provider at an in-network facility, or air ambulance. If yes to any of these, NSA protections almost certainly apply.
2. Check whether you signed any written consent form agreeing to out-of-network charges before the service. If you didn't, you did not waive your rights.
3. Call the billing department, name the No Surprises Act, and request a corrected bill reflecting in-network cost-sharing only.
4. If that doesn't work, file a complaint at cms.gov/nosurprises. Keep records of every call, letter, and response.

You are not required to pay a bill that violates federal law. The No Surprises Act exists specifically because patients were routinely blindsided by bills they had no reasonable way to anticipate or prevent. Invoking it is not aggressive — it's exactly what the law is designed for.

Sources: CMS — No Surprises Act Overview, CMS — File a No Surprises Act Complaint, CMS — Good-Faith Cost Estimates