plainly AI agentsAboutFree trial

Answers

What is the No Surprises Act, and when does it apply?

A bill from an out-of-network doctor you never picked, after an emergency or a procedure at an in-network hospital, is the kind of bill this federal law was written for. Whether it reaches your bill depends on your coverage and where the care happened.

Arun Verma, co-founder of Triangle · 2026-10-19

This is not clinical evidence and not medical advice. It does not replace your care team. Discuss anything here with your clinician before you act on it.

What is the No Surprises Act?

The No Surprises Act is a federal law that protects you from many unexpected out-of-network medical bills. The federal law went into effect on January 1, 2022. The federal rules that put it in place say it was part of the Consolidated Appropriations Act, 2021, signed into law on December 27, 2020. CMS says it applies to most types of health insurance and covers out-of-network bills from emergency room visits, from non-emergency care related to a visit to an in-network hospital, hospital outpatient department or ambulatory surgical center, and from air ambulance services. It also reaches people who don't have or don't use insurance: usually, providers must give them a good faith estimate of what their care will cost.

What counts as a surprise bill?

It's an unexpected bill from an out-of-network provider or facility for the part your plan didn't cover. Billing you for the part your plan doesn't cover is what CMS's overview calls balance billing, and it says a surprise bill can also include cost sharing above your in-network amounts. These bills are more likely when you don't get the chance to pick an in-network provider in advance, such as during a medical emergency. For non-emergency care, the protection is tied to four kinds of in-network facility: a hospital, a hospital outpatient department, a critical access hospital and an ambulatory surgical center.

What do I still owe when the Act applies?

Usually your normal in-network share. You can still owe cost sharing, which could include an unmet deductible, a copayment or coinsurance, but when the Act applies, CMS's overview says, your cost sharing for out-of-network care can't be greater than your in-network cost sharing. A bill toward a deductible you haven't met isn't a violation of the Act, CMS's dispute page notes.

Who is covered, and who isn't?

Most people with private coverage are. CMS's at-a-glance sheet lists plans through an employer or union, the Federal Employees Health Benefits program, the Health Insurance Marketplace and individual plans bought directly from an insurance company. People who don't have or don't use insurance are protected too, through the good faith estimate rules. The surprise billing protections don't apply to people whose only coverage is Medicare (including Medicare Advantage), Medicaid, the Children's Health Insurance Program, Indian Health Service, Veterans Affairs Health Care or TRICARE; CMS says those programs generally have separate protections against balance billing. Short-term limited duration plans, health care sharing ministry plans and fixed indemnity plans, like hospital indemnity insurance, sit outside the billing protections as well.

What doesn't the Act cover?

Ground ambulance bills are one gap. CMS says ground ambulance services generally aren't covered by the Act's billing protections, unless a state law has different rules, and they're still allowed to charge out-of-network rates. The protections also generally don't reach non-emergency care at an out-of-network facility, or at an in-network setting other than the four facility types above; the at-a-glance sheet gives a community health clinic or a doctor's office as an example. They don't apply when you waived them by signing a valid notice and consent form for care that can lawfully be waived, or when the care wouldn't have been covered by your plan even in-network, such as a service that isn't a covered benefit. A signed form does not waive protections for emergency care or for specified ancillary services such as anesthesiology, pathology, and radiology.

What is a notice and consent form?

It's a form that asks you to give up your surprise billing protections for care from an out-of-network provider. If you're scheduled for care at an in-network facility with an out-of-network provider, you may be asked to sign one, and signing can waive protections for that scheduled out-of-network care, CMS's at-a-glance sheet says. Federal rules do not allow that waiver for emergency care or for specified ancillary services such as anesthesiology, pathology, radiology, and neonatology. You don't have to sign it. Providers and facilities must use the standard federal form, or a state form that meets federal requirements, and can't make up their own. Where state law allows, a provider or facility can refuse to treat someone who doesn't consent, so you may need to reschedule with an in-network provider.

What is a good faith estimate?

It's an estimate of expected charges that providers usually must give you when you aren't using insurance to pay for the care. You get one if you schedule at least 3 business days ahead, or if you ask. Timing depends on how far ahead you book. Care scheduled 3 to 9 business days out brings an estimate within 1 business day, care 10 or more business days out within 3 business days, and a request before scheduling within 3 business days. Care booked 0 to 2 business days ahead isn't entitled to one, which also means estimates aren't required for emergency care or walk-in appointments. The estimate must include an itemized list and come on paper or by email, whichever you prefer. It might leave out separately scheduled items, care from another provider or facility, and services your doctor didn't anticipate. People enrolled in federal programs such as Medicare and Medicaid aren't entitled to one, even if they don't plan to use that coverage, the at-a-glance sheet says.

What if the bill is much higher than the estimate?

You may be able to dispute it. CMS's overview of key protections, revised June 2026, says that if the actual bill from a provider or facility is at least $400 higher than that provider's or facility's estimate, you may be able to challenge it through the patient-provider dispute resolution process. To qualify, CMS's dispute page says, you didn't have or use insurance for the care, you told the provider so beforehand, you got care on or after January 1, 2022, you have a good faith estimate you received 3 days before the scheduled appointment, and your initial bill is dated within the last 120 calendar days. An independent third party reviews the bill and decides an appropriate payment; filing carries a non-refundable fee. Your costs won't increase if you dispute. While the dispute runs, the provider can't move the bill into collections or threaten to, collect existing late fees on unpaid bills, or take action against you for disputing.

Where can I get help with a bill I think breaks these rules?

The No Surprises Help Desk, run by CMS, takes questions and complaints at 1-800-985-3059, with phone support 7 days a week. If you used insurance, the dispute process above isn't open to you. CMS's dispute page points to a complaint instead, for example for an out-of-network bill from an emergency room visit or an in-network facility, or when a provider didn't follow the notice and consent rules. The Help Desk can review whether surprise billing rules were followed, investigate, and refer a complaint to another federal or state authority. CMS's complaint page lists documents that help, such as the medical bill, a photo of your insurance card if you used insurance, an explanation of benefits, a good faith estimate and a signed notice and consent form. State surprise billing laws still count: the at-a-glance sheet says the Act sets a floor rather than replacing them, and names your state's Department of Insurance for more.

Sources

Start your 7-day free trialplainly is made by Triangle. 7-day free trial, then $9 a month. Cancel anytime.