Direct answer: If you didn't use insurance and a provider's bill is at least $400 more than its good faith estimate, you can start a federal dispute within 120 days of the bill for a $25 fee. Nonprofit hospitals must offer financial assistance, and paid medical collections and those under $500 stay off credit reports.
By the numbers: Substantially in excess means, with respect to the total billed charges by a provider or facility, an amount that is at least $400 more than the total amount of expected charges listed on the good faith estimate for the provider or facility. Source: 45 CFR 149.620(a)(2)(ii)
Quick Q&ACan I dispute a medical bill that is higher than my good faith estimate?
Yes, if you didn't use insurance, told the provider so, got a good faith estimate, and one provider or facility billed at least $400 more than its own estimate. Start the federal patient-provider dispute within 120 calendar days of the initial bill; the fee is $25 (CMS; 45 CFR 149.620).
Can a provider send my bill to collections while I dispute it?
No. CMS says that during the dispute process the provider or facility can't move the bill into collections or threaten to, can't collect late fees until the dispute ends, and must stop pursuing payment if the bill is already in collections.
Does the No Surprises Act cover ground ambulance bills?
Generally no. CMS says ground ambulance services aren't covered by the No Surprises Act billing protections unless a state law has different rules; emergency rooms, in-network hospital and surgery center visits, and air ambulances are.
Do nonprofit hospitals have to offer financial assistance?
Yes. Under section 501(r) a tax-exempt hospital must have a written financial assistance policy, can't charge eligible patients more than amounts generally billed for emergency or medically necessary care, and can't start extraordinary collection actions until at least 120 days after the first post-discharge bill (IRS).
Does medical debt still show on credit reports?
Paid medical collections and medical collections with an initial balance under $500 are left off reports by Equifax, Experian and TransUnion, and unpaid ones wait one year before appearing. The CFPB's 2025 rule to remove medical debt from reports was vacated by a federal court on July 11, 2025.
As of Oct. 23, 2026
You have more rights on a medical bill than most people use. If you had insurance, federal law stops most surprise out-of-network bills from emergency rooms and in-network hospitals. If you paid without insurance, you can dispute a bill that is $400 or more above the written estimate. Nonprofit hospitals must offer financial assistance and wait before sending you to collections, and most small or paid medical collections stay off your credit report. This page lays out those rules from CMS, the IRS and the credit bureaus, with a deadline check.
EXAMPLE Made-up bill, not a real case: a surgeon's estimate of $1,000 and a bill of $1,450 dated Friday, Oct. 23, 2026 is $450 over, so it meets the $400 test; 120 calendar days later is Saturday, Feb. 20, 2027. For a nonprofit hospital whose first bill after you leave is dated Oct. 23, 2026, collection actions can't start before Feb. 20, 2027, and you can apply for help through at least June 20, 2027. Sources: CMS: dispute a bill · 45 CFR 149.620 · IRS 501(r)(6).
First steps with any medical bill
Don't pay a bill you don't understand yet. Ask the provider for an itemized bill, and if you have insurance, compare it with your plan's explanation of benefits.
Check it's a real charge for you: right dates, right services, insurance billed first. Errors are yours to point out; call the billing office and write down who you spoke to.
If insurance denied part of it, you can appeal by following the process in your plan documents and the denial notice.
If you can't afford it, ask about financial assistance (sometimes called charity care) before you agree to a payment plan or put it on a credit card. A medical bill on a credit card is card debt, not a medical collection, so the credit report rules below no longer apply to it.
If it's already in collections, tell the collector you're applying for financial help or disputing the bill and ask it to pause. Collectors must follow the federal debt collection rules: see Debt collectors: your rights.
Emergency care: since Jan. 1, 2022, if your plan covers emergency care, the hospital, its doctors and an air ambulance can't charge you more than your in-network cost-sharing (copay, coinsurance, deductible), even if they're out of network. That includes most post-stabilization care.
Planned care at an in-network hospital, hospital outpatient department or ambulatory surgery center: you're protected from out-of-network charges by a doctor there who isn't in your network, such as an anesthesiologist.
Notice and consent forms: for some scheduled care, an out-of-network provider may ask you to sign a form giving up these protections. CMS's advice: to save money and stay in network, don't sign it.
Not covered: ground ambulances (unless your state's law covers them), a doctor's office that isn't a hospital outpatient department, out-of-network facilities you choose, short-term plans, health care sharing ministries, fixed indemnity plans, and dental-only or vision-only plans.
Medicare, Medicaid, TRICARE, VA and Indian Health Service have their own protections against many surprise bills.
Not a violation: a bill because you haven't met your deductible yet.
If the rules weren't followed, call the No Surprises Help Desk at 1-800-985-3059 or file a complaint online. CMS says it will reach out within 60 days if it needs more information.
If you didn't use insurance: good faith estimates and the $400 dispute
Ask for a good faith estimate. If you don't have insurance or aren't using it, providers usually must give you a written estimate when you schedule care at least 3 business days ahead, or when you ask. There's no estimate for emergency care.
One estimate per provider. Each estimate covers a single provider or facility, so for surgery ask both the surgeon and the hospital. Keep every estimate; you need it to dispute.
The $400 test: you can dispute if one provider's or facility's total bill is at least $400 more than that provider's own estimate, you got care on or after Jan. 1, 2022, and you told the provider you weren't using insurance.
Deadline: start within 120 calendar days (about 4 months) of the initial bill. The rule counts from when you received it; CMS's form asks for a bill dated within the last 120 days, so counting from the bill date is safest.
Fee:$25, non-refundable, paid before the dispute starts. If you win, it comes off what you owe. If you and the provider settle during the dispute, the provider must cut the bill by at least $12.50.
While it's pending, the provider can't send the bill to collections or threaten to, can't collect late fees, and must stop pursuing payment if it's already in collections. Your costs won't go up because you disputed.
The outcome: an independent reviewer decides what you pay. If the extra items were needed and couldn't reasonably have been foreseen, the bill can stand.
Nonprofit hospitals: financial assistance and collection limits
A tax-exempt (nonprofit) hospital must meet section 501(r) of the tax code at each of its facilities. Ask the billing office for the financial assistance policy (FAP) or search the hospital's name plus "financial assistance". Other hospitals may also offer help.
A written policy: who qualifies for free or discounted care and how to apply. The hospital must offer a plain-language summary at intake or discharge and print a notice about financial assistance on its bills.
A price limit: once you're found eligible, you can't be charged more than the amounts generally billed to insured patients for emergency or other medically necessary care.
120 days before collections: the hospital can't start extraordinary collection actions until at least 120 days after its first bill after you leave (the post-discharge bill), and must give you written notice at least 30 days before, and try to tell you by phone or in person.
240 days to apply: the application period runs at least 240 days from that first bill. A complete application pauses collection actions while the hospital decides; an incomplete one gets instructions on how to finish it.
What counts as an extraordinary collection action: selling your debt (with limited exceptions), reporting you to credit bureaus, delaying or denying needed care over old bills, and legal steps such as liens, lawsuits, bank account seizures and wage garnishment.
Paid medical collections are no longer included on credit reports by Equifax, Experian or TransUnion (since July 1, 2022).
Unpaid medical collections wait one year before they can appear (it used to be six months).
Under $500: medical collections with an initial reported balance under $500 are left off reports (since April 2023).
What can still appear: an unpaid medical collection of $500 or more after the one-year wait. These are the bureaus' own policies, not a federal law.
No federal ban: the CFPB finalized a rule in January 2025 to keep medical debt off most credit reports, but a federal court in Texas vacated it on July 11, 2025, at the joint request of the CFPB and the plaintiffs. Some states have their own laws on medical debt reporting.
Check and dispute: get your free reports at AnnualCreditReport.com and dispute a paid, under-$500, too-new or wrong medical collection with each bureau that shows it. See Free credit reports & fix mistakes.
Get the itemized bill (and your explanation of benefits if you have insurance) and check it line by line.
Pick your route: a surprise bill with insurance goes to the No Surprises Help Desk (1-800-985-3059); no insurance and $400+ over the estimate goes to the CMS dispute within 120 days; a nonprofit hospital bill you can't afford goes to its financial assistance application.
Write down your deadline (use the check above) and keep copies of everything you send.
Facts, not legal or medical-billing advice. We summarize federal law, CMS and IRS guidance and the credit bureaus' published policies, with dates. State laws can add protections that aren't on this page. The deadline check is date arithmetic, not a ruling. We don't link to or get paid by debt relief companies, medical billing advocates or lenders.
Can I dispute a medical bill that is higher than my good faith estimate?
Yes, if you didn't use insurance, told the provider so, got a good faith estimate, and one provider or facility billed at least $400 more than its own estimate. Start the federal patient-provider dispute within 120 calendar days of the initial bill; the fee is $25 (CMS; 45 CFR 149.620).
Can a provider send my bill to collections while I dispute it?
No. CMS says that during the dispute process the provider or facility can't move the bill into collections or threaten to, can't collect late fees until the dispute ends, and must stop pursuing payment if the bill is already in collections.
Does the No Surprises Act cover ground ambulance bills?
Generally no. CMS says ground ambulance services aren't covered by the No Surprises Act billing protections unless a state law has different rules; emergency rooms, in-network hospital and surgery center visits, and air ambulances are.
Do nonprofit hospitals have to offer financial assistance?
Yes. Under section 501(r) a tax-exempt hospital must have a written financial assistance policy, can't charge eligible patients more than amounts generally billed for emergency or medically necessary care, and can't start extraordinary collection actions until at least 120 days after the first post-discharge bill (IRS).
Does medical debt still show on credit reports?
Paid medical collections and medical collections with an initial balance under $500 are left off reports by Equifax, Experian and TransUnion, and unpaid ones wait one year before appearing. The CFPB's 2025 rule to remove medical debt from reports was vacated by a federal court on July 11, 2025.
Estimates, not financial advice. Taxes, insurance, PMI and fees vary by lender, county and city; confirm with your lender, dealer and state agency before acting.