Updated October 15, 2026
What should you do if you get a surprise medical bill? Don’t pay it right away. Compare it with your Explanation of Benefits, then ask the provider for an itemized bill and whether No Surprises Act protections were applied. If the bill is for emergency care, an out-of-network provider at an in-network hospital, or an air ambulance, you should owe only your in-network cost-sharing. If the provider or your insurer won’t fix it, call the No Surprises Help Desk at 1-800-985-3059.
You checked your insurance, stayed in network, and followed the rules. So why did a bill arrive with a number you weren’t expecting? Surprise bills often show up after care you didn’t fully control, like an emergency room visit or surgery. Federal law now protects you in many of these situations, and knowing the steps can help you get a wrong bill fixed.
Key Takeaways
- A surprise bill usually comes from an out-of-network provider you didn’t choose, such as an anesthesiologist or radiologist at an in-network hospital.
- Under the No Surprises Act, you can’t be balance billed for emergency care, most care from out-of-network providers at in-network facilities, or air ambulance services.
- Ground ambulance rides aren’t covered by federal law, but some states have their own protections.
- Start by comparing the bill with your Explanation of Benefits, then contact the provider and your insurer.
- Uninsured and self-pay patients can dispute a bill that’s at least $400 more than their Good Faith Estimate, within 120 days.
How to Tell If You Have a Surprise Bill
A surprise bill, also called a balance bill, is a charge for the difference between what an out-of-network provider billed and what your insurance paid. Common examples:
- You had surgery at an in-network hospital, but the anesthesiologist was out of network (OON).
- You went to the ER and were later billed by an out-of-network radiologist who read your scans.
- You had a planned procedure and got a bill from an out-of-network assistant surgeon you never met.
If your situation looks like one of these and you have private insurance, you’re likely protected. For a full explanation of the law, see What Is the No Surprises Act?
Are You Protected? A Quick Check
| Situation | Protected under federal law? |
| Emergency care at an out-of-network ER | Yes. You pay in-network cost-sharing. |
| Anesthesiologist, radiologist, pathologist, or lab at an in-network hospital | Yes. These providers can’t ask you to waive your protections. |
| Other out-of-network doctor at an in-network facility | Yes, unless you got written notice and signed consent in advance |
| Air ambulance | Yes. You pay in-network cost-sharing. |
| Ground ambulance | No, but check your state’s laws |
| Medicare, Medicaid, TRICARE, or VA coverage | Not under this law, but those programs have their own protections |
Steps to Take If You Get a Surprise Bill
- Don’t pay yet. Paying first can make a correction harder to get.
- Compare the bill with your Explanation of Benefits (EOB). Check what your insurer paid, what it says you owe, and whether the provider was out of network. Our guide to reading an EOB can help.
- Ask the provider for an itemized bill. Look for duplicate charges, services you didn’t receive, or coding errors. See how to understand a medical bill.
- Ask whether No Surprises Act protections were applied. If the bill falls under a protected situation, ask the provider to rebill you at your in-network cost-sharing amount.
- Contact your insurer. Ask it to review how the claim was processed and whether it should have been handled under the law.
- File a complaint if it isn’t fixed. Call the No Surprises Help Desk at 1-800-985-3059, 8 a.m. to 8 p.m. ET, 7 days a week, or submit a complaint through CMS. You can also contact your state insurance department.
- Keep records. Note the date, name, and reference number for every call, and save all letters and bills.
Payment disagreements between your insurer and an out-of-network provider go through a separate process called Independent Dispute Resolution (IDR). You don’t take part in it, and it shouldn’t change what you owe.
If You’re Uninsured or Paying Yourself
Providers must give you a written Good Faith Estimate when you schedule care at least 3 business days ahead, or when you ask for one. If your final bill is at least $400 more than the estimate, you can start a patient-provider dispute resolution (PPDR) within 120 days of the date on the bill. There’s a $25 fee (CMS).
To prepare, see our guide on how to estimate out-of-pocket costs.
Notice and Consent: What You Should Know Before Signing
For some non-emergency care, an out-of-network provider at an in-network facility can ask you to give up your protections. To do that, they must give you a written notice and get your signed consent at least 72 hours before your care, or at least 3 hours before for care scheduled the same day. You don’t have to sign, and you can ask for an in-network provider instead.
Emergency providers, and ancillary providers like anesthesiologists, radiologists, pathologists, and labs, can never ask you to waive your protections. If one of them asks, a signed form doesn’t make you owe more.
Frequently Asked Questions
Which providers can’t send me a surprise bill?
At an in-network hospital or surgery center, out-of-network emergency medicine doctors, anesthesiologists, radiologists, pathologists, neonatologists, assistant surgeons, hospitalists, intensivists, and labs can’t balance bill you. They also can’t ask you to waive that protection.
What if I chose an out-of-network provider?
If you received proper written notice and signed consent in advance for non-emergency care, you may be billed the out-of-network amount. This doesn’t apply to emergency care or to ancillary providers.
Does the No Surprises Act cover ground ambulance rides?
No. Ground ambulance services aren’t included in the federal law, but some states have their own protections. Check with your state insurance department.
Can I negotiate a surprise medical bill?
Yes. Even if federal protections don’t apply, you can ask the provider for an itemized bill, a discount, a payment plan, or financial assistance.
Will a surprise bill hurt my credit?
The three major credit bureaus don’t report medical debt under $500, wait a year before reporting unpaid medical debt, and remove medical debt once it’s paid. Disputing a bill early can help keep it from going to collections.
How do I start a dispute?
If you’re insured, contact your provider and insurer first, then call the No Surprises Help Desk at 1-800-985-3059 or file a complaint at CMS.gov. If you’re uninsured or self-pay and your bill is at least $400 over your Good Faith Estimate, start a patient-provider dispute within 120 days of the bill date.
Learn More with Patient.com
A surprise bill doesn’t always mean you owe what it says. Patient.com helps you understand your rights, check your bills, and take the right next step, so you can resolve billing problems with less stress.
