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Bill higher than your good faith estimate? What you can do

For uninsured and self-pay patients: when a bill is at least $400 above the good faith estimate, the federal dispute process, its deadline and fee, and what to ask first.

By the MedBillCheckup team · Updated November 8, 2026 · About 5 minutes to read

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You were given a price before your care. Then the bill came, and it is far higher. If you had no insurance, or chose to pay yourself, a federal rule gives you a way to ask for an independent review. This guide explains who can use it, the deadline, the fee, and what to ask first. It is a summary to help you ask the right questions, not legal advice.

The short answer

If you had no insurance, or did not use it, the provider or facility had to give you a good faith estimate of the cost of scheduled care. If one provider or facility billed at least $400 more than its own estimate, you may be able to start the federal patient-provider dispute process. An independent third party reviews the bill and decides an appropriate payment (CMS).

The deadline is short. The rule says to start within 120 calendar days of receiving the first bill with those charges. There is a $25 non-refundable fee to file. Do not wait for the billing office to answer before you check the date on the bill.

What is a good faith estimate, and when should you get one?

It is a written notice of expected charges for care you scheduled or asked about. It is for people not using insurance to pay for the care. The rule (45 CFR 149.610) says the estimate must come within these times:

  • If you schedule care 3 to 9 business days ahead, within 1 business day after scheduling.
  • If you schedule care 10 or more business days ahead, within 3 business days after scheduling.
  • If you ask for an estimate, within 3 business days after you ask.

The estimate must be in writing. It must include an itemized list of items and services grouped by provider or facility, with the expected charges. It must also carry a notice that the figures are only an estimate and may differ, and a notice of your right to start the dispute process if the bill is far above it. The estimate covers one provider or facility, so you may have several estimates for one stay. If you never got one, ask for it. The rule also says that if the expected charges or services change, the provider or facility must send a new estimate no later than 1 business day before the care.

Can I dispute a bill that is higher than my estimate?

You may be able to, if all of this is true:

  1. You had no insurance, or you did not use it and told the provider before your care.
  2. The care was on or after January 1, 2022.
  3. One provider or facility billed at least $400 more than its own estimate. The rule counts this per provider or facility, using the total billed and the total expected charges listed for that same one.
  4. The first bill with those charges is recent. The rule says to start within 120 calendar days of receiving it. CMS says the initial bill must be dated within the last 120 calendar days. Count from the earlier date.

This is the same process described in the No Surprises Act explained. Only the review process can say whether your case qualifies.

What should I ask the provider first?

You can call the billing office before you file. Nothing in the rule says a call pauses the 120 days, so keep the date in view. Ask:

  • "My estimate listed this amount. Why is the bill higher? Which lines changed?"
  • "Was there a new estimate before my care? Please send me every estimate you issued."
  • "Can you send an itemized bill?" Our guide on how to request an itemized bill has the wording.
  • "Were the extra lines for a provider or service that was not on my estimate?"
  • "Do you have a financial assistance policy, and can I apply?" See hospital charity care.

Ask for each answer in writing. Write down the date, the name and what was said.

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How do I start the dispute?

CMS says you can start online through its dispute portal, where you enter your email and request a one-time PIN. You can also start by mail or fax with a PDF form from the CMS page. Do not mail original documents.

The rule says the notice must include:

  • The date of the care and a description of it.
  • A readable copy of the bill. A photocopy or an electronic image is fine.
  • A readable copy of your good faith estimate.
  • The provider's or facility's contact details, if they are not on the estimate.
  • The state where you got the care.
  • How you want to be contacted.

You also pay the $25 non-refundable fee. If the reviewer decides on an amount lower than the billed charges, the rule has the fee taken off what you owe. CMS says your costs will not increase because you disputed.

What happens while the dispute is open?

According to the rule, while the dispute is pending the provider or facility must not move the bill into collection or threaten to. If the bill is already in collection, it should stop collecting. It must also pause late fees until the process ends. It must not take or threaten retributive action against you for using the process.

The reviewer asks the provider to send its copy of the estimate and the bill. The provider may also send documents to show that the extra charge reflects medically necessary care and could not have been foreseen when it gave the estimate. The reviewer looks at what both sides sent. The rule says the reviewer's decision is generally binding on both sides, but the provider may offer financial assistance or a lower amount, and you and the provider may agree on a different amount. If you reach a settlement, the rule has the provider take at least half of the fee off the settled amount. Nobody can promise how any case ends.

What if I have insurance?

The dispute process is for people with no insurance, or with insurance who chose not to have a claim sent to it. CMS says that if you used health insurance, you do not qualify. If your plan was billed, a different set of questions applies. Compare the bill with your EOB first, as in medical bill vs EOB. If the billing office will not move, what to do when the billing office says no lists the next official steps. For the general steps, see how to dispute a medical bill.

What to ask

  1. Every good faith estimate the provider or facility issued for this care, with dates.
  2. An itemized bill that you can lay next to the estimate.
  3. Which lines are not on the estimate, and why they were added.
  4. Whether a new estimate was sent when the plan of care changed.
  5. The date of the first bill with these charges, so you can count the 120 days.
  6. A written answer, and a pause on collection while you wait or while a dispute is open.
  7. Financial assistance, if you cannot pay the amount.

To see which lines on your own bill may be worth asking about, open it in MedBillCheckup. It is read on your device and the bill file stays with you. The free check shows how many things are worth asking about and names the first. The full list, with the question to ask for each line, is paid.

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Questions about this guide

What if my bill is higher than my good faith estimate?

If you paid yourself or had no insurance, first compare the bill with the estimate and ask the provider about each difference. If one provider or facility billed at least $400 more than its own estimate, you may be able to start the federal patient-provider dispute process. CMS says the bill must be dated within the last 120 calendar days. Only the provider and the independent reviewer can say how a case ends.

How much more than the estimate can a provider bill before I can dispute it?

The rule says the total billed by one provider or facility must be at least $400 more than the total expected charges listed for that same provider or facility on your estimate. The $400 is counted per provider or facility, not across the whole estimate.

How long do I have to dispute a bill that is higher than the estimate?

The rule says to start within 120 calendar days of receiving the initial bill with those charges. CMS words it as an initial bill dated within the last 120 calendar days. Count from the earlier of the two dates, and do not wait.

Does it cost money to dispute a bill over the good faith estimate?

CMS says there is a $25 non-refundable administrative fee to file. If the reviewer decides an amount lower than the billed charges, the rule has that $25 taken off the amount you owe. CMS says your costs will not go up because you disputed.

Can the hospital send me to collections while the dispute is open?

The rule says that while the dispute is pending, the provider or facility must not move the bill into collection or threaten to, and should stop collecting if the bill is already there. It must also pause late fees until the process is over. If you see otherwise, say so in writing to the billing office.

Does the good faith estimate rule apply if I have insurance?

The dispute process is for people with no insurance, or with insurance who chose not to have a claim sent to it. CMS says that if you used health insurance, you do not qualify. If you used insurance, start with the bill next to your insurer explanation of benefits (EOB), and see our guide on that.

Sources

  1. Electronic Code of Federal Regulations: 45 CFR 149.620, requirements for the patient-provider dispute resolution process
  2. Electronic Code of Federal Regulations: 45 CFR 149.610, requirements for provision of good faith estimates of expected charges for uninsured (or self-pay) individuals
  3. Centers for Medicare & Medicaid Services: Dispute a medical bill
  4. Centers for Medicare & Medicaid Services: What is a good faith health insurance estimate?

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