Good Faith Estimate dispute: when the final bill exceeds your GFE
If you're paying out of pocket for healthcare, the provider is supposed to hand you a written Good Faith Estimate (GFE) of what the care will cost before you receive it. When the actual bill comes in $400 or more above that estimate for a given provider, federal law gives you a way to fight it: the Patient-Provider Dispute Resolution (PPDR) process. It costs $25 to start, you have 120 days, and a neutral federal reviewer decides what you actually owe. Here's how the threshold works, how to file, and what to expect from the determination.
What a Good Faith Estimate is
The Good Faith Estimate is a creation of the No Surprises Act, the federal law that took effect on January 1, 2022. Most of that law is about insured patients and balance billing, which we cover in detail in our guide to No Surprises Act protections. The GFE is the part written specifically for people who don't run a service through insurance.
If you are uninsured, or you have insurance but choose not to use it for a particular service (self-pay), the provider scheduling that care must give you a written estimate of the expected charges. The estimate has to itemize the expected services by code and list the provider or facility delivering each one. It is not a casual ballpark; it's a document the provider is on the hook for.
Two timing rules govern when you get it:
- You ask for one. Any uninsured or self-pay patient can request a GFE for a service, and the provider must produce it, even if nothing is scheduled yet. They have to deliver it within three business days of your request.
- Care is scheduled in advance. If you schedule a service at least three business days out, the provider must give you a GFE automatically, without being asked, at least one business day before the appointment (three business days before, if the service was scheduled ten or more days out).
The estimate is supposed to cover the primary service plus the items and services reasonably expected to go with it. For a scheduled surgery, that means the facility fee, the surgeon, the anesthesia, and the typical lab and imaging that surround the procedure, not just the one line you asked about.
The $400-over rule, stated precisely
This is the load-bearing number, so it's worth getting exactly right. You can dispute through the federal process when the final billed charges from a single provider or facility are at least $400 more than that same provider's estimate on your GFE.
The threshold is measured per provider, not across your whole bill. That distinction trips people up constantly. Say your GFE listed three separate providers — a surgeon, an anesthesiologist, and a facility — and each one's final charge came in $200 above its estimate. Your total bill is $600 over. But no single provider crossed the $400 line, so none of them qualifies for a dispute. The math is done provider by provider, against that provider's own line on the estimate.
Flip it: if your GFE estimated the facility fee at $2,000 and the facility billed $2,600, that one provider is $600 over, clears the $400 threshold, and is eligible — regardless of how the other lines came out. You dispute that provider's charge specifically.
Because the comparison is line-by-line against the estimate, a clean, itemized GFE is your most important document. If the GFE lumped everything into one number and the bill itemizes, you compare the bill's total for that provider against the estimate's total for that provider. Keep the estimate; without it you have nothing to measure the $400 against.
What the dispute process is
The mechanism is the Patient-Provider Dispute Resolution process, run by the Centers for Medicare & Medicaid Services (CMS). When you file, your case goes to a Selected Dispute Resolution (SDR) entity — a neutral, third-party reviewer certified by the federal government to decide these cases. The SDR entity looks at your estimate, your final bill, and any supporting documentation the provider submits, then issues a binding determination of what you owe.
The core mechanics:
- $25 administrative fee to initiate the dispute, paid when you submit. If the SDR entity rules in your favor, that $25 is credited back to you (effectively deducted from what you owe), so winning makes the fee whole.
- 120 calendar days from the date you received the bill to file. This window is firm. Miss it and the federal process is closed for that bill.
- The SDR entity reviews and issues a written determination. It weighs whether the higher charge was justified by services that genuinely differed from, or exceeded, what the estimate anticipated.
- Collections freeze while the dispute is pending. The provider cannot send the disputed amount to collections, cannot accrue interest or late fees on it, and cannot take other collection action until the dispute resolves.
That collections freeze matters as much as the determination itself. The moment you file, the clock on the provider's ability to pressure you stops. They can't quietly hand the balance to a collector while you wait.
How to file, step by step
The process is paperwork-heavy but not complicated. Work through it in order.
- Gather your two core documents. The Good Faith Estimate the provider gave you, and the itemized final bill. If you only have a summary bill, request the itemized version first — you need line items to compare against the estimate.
- Confirm the $400 threshold, per provider. Line up each provider's final charge against that provider's estimate. Identify which provider (or providers) came in $400 or more above. Only those are eligible. Don't add the whole bill together.
- Check the 120-day clock. Find the date you received the bill. You must file within 120 calendar days of that date. If you're close to the deadline, file now and supplement documentation later if needed.
- Submit through the CMS portal. Start the dispute at the federal No Surprises portal, cms.gov/nosurprises. You'll enter your information, the provider's information, the estimate amount, the billed amount, and upload your documents.
- Pay the $25 fee. This initiates the case. Keep your receipt; if you win, the fee is credited back.
- Wait for the determination. The SDR entity reviews both sides and issues a written decision. While you wait, the disputed amount is frozen — no collections, no interest, no late fees.
If the dollar math on what you'd realistically owe under different outcomes is hard to picture, our out-of-pocket cost calculator can help you model the GFE amount against the billed amount before you decide whether the dispute is worth the $25 and the effort.
What happens after the determination
The SDR entity's decision settles what you owe for the disputed provider's charges. There are two outcomes:
- You win. If the reviewer agrees the higher charge wasn't justified, you pay the Good Faith Estimate amount for that provider — sometimes less, depending on the entity's findings — and the $25 fee is credited back to you. The provider has to honor that number.
- The provider justifies the charge. If the SDR entity finds the higher amount was warranted (the service genuinely differed from or exceeded what was estimated), you pay the amount the entity determines. That figure may still land below the original bill, because the reviewer assesses what's reasonable rather than rubber-stamping the provider's number.
Either way, you walk out with a documented, independently reviewed figure instead of whatever the provider first printed. The process is structured to reward accuracy on the provider's side: an estimate that was wildly low without good reason is hard for them to defend.
Keep in mind that the dispute only covers the gap the GFE protects. If the bill is high but tracks the estimate, the GFE process won't lower it. That's a different problem, solved by negotiating — see our guide on how to negotiate a medical bill for the cash-pay rate, prompt-pay discount, and charity-care levers that apply when the bill is simply more than you can pay.
Who this applies to — and who it doesn't
This is the part that's easy to get wrong, so be clear with yourself about which bucket you're in. The Good Faith Estimate and the PPDR dispute are for uninsured and self-pay patients. If you didn't run the care through insurance, this is your process.
If you used your insurance for the service, the GFE dispute is not your tool. Insured patients are protected by a different part of the No Surprises Act — the ban on balance billing for emergency care, for out-of-network providers at in-network facilities, and for air ambulance. Those protections cap what you owe at your in-network cost-sharing and don't involve a GFE or a $25 dispute. If you're insured and got a surprise bill, the path is to verify the charge against your Explanation of Benefits and dispute it as a balance-billing violation, which our No Surprises Act protections guide walks through.
The reason for the split is structural. The GFE exists because uninsured patients have no insurer negotiating a rate on their behalf, so the law forces the provider to commit to a price upfront. Insured patients already have a negotiated rate, so their protection is about stopping providers from billing past it. Same law, two different mechanisms, two different groups.
Practical tips that make the difference
The dispute process only works if you've set yourself up before the bill ever arrives. A few habits do most of the work.
- Always request a GFE. Don't wait for the provider to volunteer one. If you're uninsured or self-paying, ask in writing for a Good Faith Estimate the moment care is on the table. They must provide it within three business days of the request, or automatically for care scheduled three or more business days out.
- Keep the GFE somewhere you'll find it. The estimate is the entire basis for your dispute. Without it, you can't prove the $400 gap. Save the PDF, photograph the paper copy, and note the date you received it.
- Compare the bill line by line. When the final bill arrives, lay it next to the GFE and match each provider's charge to its estimate. The $400 test is per provider; only a line-by-line comparison tells you which charges qualify.
- Note the date you received the bill. The 120-day clock starts then. Write it down. If a dispute looks likely, don't let weeks drift by.
- Don't pay the disputed amount under pressure. Once you file, that amount is frozen from collections. Paying it early to make a billing office stop calling can undercut your position; pay any clearly undisputed portion and dispute the rest.
One more: a GFE has value even if you never dispute. By forcing the provider to put a cash price in writing before care, it gives you a number to negotiate against and a paper record of what you were promised. Ask for it every time.
Quick reference: the dispute at a glance
| Element | The rule |
|---|---|
| Who qualifies | Uninsured and self-pay patients only |
| Trigger | Final bill $400+ above the GFE, per provider |
| Filing fee | $25 (credited back if you win) |
| Deadline | 120 calendar days from receiving the bill |
| Where to file | CMS portal at cms.gov/nosurprises |
| Who decides | A Selected Dispute Resolution (SDR) entity |
| While pending | No collections, no interest, no late fees on the disputed amount |
| If you win | You pay the GFE amount (or less) for that provider |
Frequently asked questions
Who can use the Good Faith Estimate dispute process?
Uninsured and self-pay patients. If you don't have insurance, or you have insurance but choose not to use it for a service, you're entitled to a Good Faith Estimate and to the Patient-Provider Dispute Resolution process if the final bill runs $400 or more above that estimate for a single provider. If you used insurance for the care, this process doesn't apply to you; your protections come from a different part of the No Surprises Act.
How much does it cost to file a dispute?
There is a $25 administrative fee per dispute, paid when you submit through the CMS portal. If the Selected Dispute Resolution entity rules in your favor, the $25 is credited back so the determination reduces your final bill by the fee amount. The provider cannot charge you for the cost of the dispute itself.
How long do I have to file?
You have 120 calendar days from the date you received the bill that exceeded your Good Faith Estimate. Miss that window and the dispute process is closed to you for that bill, though you can still try to negotiate directly with the provider. File well before the deadline; gathering the estimate and the itemized bill takes time.
Can the provider send my bill to collections while the dispute is pending?
No. Once you've initiated a Patient-Provider Dispute Resolution, the provider cannot move the disputed amount to collections, cannot threaten to do so, cannot charge late fees or interest on it, and cannot take any other collection action until the dispute is resolved. If they already sent it to collections, initiating the dispute should pause that activity.
What does the $400 threshold actually mean?
The final charges from a single provider or facility must be at least $400 more than that same provider's line on your Good Faith Estimate. It is measured per provider, not across your whole bill. If three providers each billed $200 over their estimates, no single one crosses $400, so none qualifies, even though your total is $600 over.
What happens if I win the dispute?
The Selected Dispute Resolution entity issues a written determination. If it rules for you, you pay the Good Faith Estimate amount for that provider, sometimes less, plus you get the $25 fee credited. If the SDR entity finds the higher charge was justified, you pay the amount it determines, which may still be below the original bill. Either way you get a documented, reviewed number rather than the provider's opening figure.
Bottom line
If you pay cash for healthcare, the Good Faith Estimate is your contract on price, and the dispute process is your enforcement. The rules to memorize are short: you're entitled to a written estimate before scheduled care, the final bill has to run $400 or more over that estimate for a single provider to qualify, you pay $25 to file, and you have 120 calendar days from receiving the bill. Once you file, the disputed amount is frozen from collections while a neutral federal reviewer decides what's fair.
The discipline that makes it work happens before any dispute: request the estimate every time, keep it, and compare the bill against it line by line. Most uninsured patients never ask for a GFE, never get one, and have nothing to measure an inflated bill against. Ask, save, compare, and the $400 rule turns a runaway bill into a number you can challenge.
Reference information only — not legal or financial advice. Dispute rules, fee amounts, and filing windows can change; verify the current process at the federal No Surprises portal or with a patient-advocacy organization before relying on any figure here. Last updated June 2026.