Good faith estimates: what uninsured patients can get and dispute
If you're uninsured or not using insurance, providers generally must give you a written good faith estimate for care scheduled at least three business days ahead, or on request. If the bill is at least $400 over the estimate, you may be able to dispute it within 120 days of the bill.
What a good faith estimate is
If you don't have health insurance, or you choose not to use it for a particular service, federal rules let you get a written estimate of what that care should cost before you get it. CMS calls this a good faith estimate. It is an itemized list of expected charges for scheduled care, such as the procedure and the facility fee.
The estimate matters twice: once when you decide whether to go ahead, and again when the bill arrives. If the bill is much higher, the estimate is what lets you dispute it.
Who can get one
According to CMS, you can get a good faith estimate if you aren't using health insurance to pay for the care, and either:
you schedule the care at least three business days in advance, or
you ask for an estimate, even before scheduling.
Tell the provider clearly that you are uninsured or not using your insurance. That statement is one of the conditions for the dispute process later, so it's worth making in writing, such as by email or through the patient portal.
When you should receive it
CMS sets the timing based on how far ahead the care is scheduled:
Scheduled 3 to 9 business days ahead: the estimate should arrive within 1 business day.
Scheduled 10 or more business days ahead: within 3 business days.
Requested before scheduling: within 3 business days of your request.
Scheduled 0 to 2 business days ahead: you aren't entitled to an estimate.
You can choose to receive it on paper or by email.
What it includes, and what it may leave out
CMS says the estimate should list the expected items and services related to your care. Each estimate covers one provider or facility. For surgery, for example, you might need one from the surgeon and one from the hospital.
CMS also notes what an estimate may not include:
services scheduled separately, such as appointments before surgery or physical therapy afterward;
services from other providers;
services no one expected, such as an extra procedure that became necessary during care.
Read the estimate before your appointment. If something you expect isn't listed, such as anesthesia or a pathology test, ask whether it will be billed separately and request an estimate from that provider too.
A sample estimate, decoded
Sample good faith estimate · Northgate Outpatient Surgery (synthetic)
Patient: self-pay · Scheduled service: colonoscopy with possible biopsy · Date: 09/15
Facility fee $1,450.00 · Supplies $180.00 · Recovery room $320.00 · Total estimate $1,950.00
Not included: physician fees, anesthesia, pathology
The estimate covers only the facility. The doctor, the anesthesia provider and the lab that reads any biopsy will bill separately, so ask each of them for their own estimate. Keep all of them together.
If the bill is much higher: the dispute process
CMS runs a patient-provider dispute process for uninsured and self-pay patients. You can use it only if all of these apply:
You didn't have, or didn't use, insurance for the care.
You told the provider before the care that you weren't using insurance.
The care was on or after January 1, 2022.
You received a good faith estimate at least three days before your scheduled appointment.
The initial bill is dated within the last 120 calendar days.
The provider or facility charged at least $400 more than its good faith estimate.
How the $400 is counted
The comparison is per provider or facility: the bill from one provider against that provider's own estimate. Using the sample above, a facility bill of $2,400 would be $450 over the facility's $1,950 estimate.
What you file
CMS asks for the good faith estimate with the provider's contact information, the bill, and a $25 fee. The fee is non-refundable, and the dispute doesn't start until it is paid. If the decision goes your way, CMS says the $25 is subtracted from what you owe the provider. CMS says not to send original documents.
Protections while the dispute is open
CMS says that during the dispute the provider can't send the bill to collections or threaten to, can't collect existing late fees until the dispute ends, and can't retaliate against you. If the bill is already in collections, collection must stop until the dispute is resolved.
How it ends
An independent reviewer looks at the bill. If the reviewer finds the extra care was appropriate, the bill stays the same. CMS says your costs won't go up because you disputed. If you and the provider agree on an amount during the process, the provider must reduce the bill by at least $12.50 and notify the reviewer.
If you didn't get an estimate at all
You can't use the dispute process without a good faith estimate. CMS says that if you should have received one and didn't, you can submit a complaint. You may still owe the bill, but the complaint helps make sure future patients get estimates. You can also ask the provider about a discount, a payment plan or financial assistance.
Practical tips
Ask for estimates early, and from every provider involved.
Keep the estimate, the bill and any messages in one folder, digital or paper.
Watch the 120-day window. It runs from the date of the initial bill, so put the deadline in your calendar the day the bill arrives.
For questions, CMS lists the No Surprises Help Desk at 1-800-985-3059, with help in more than 350 languages.
Compare your estimate with your bill
When EasyToDecode opens, you'll be able to upload a good faith estimate and the bill that followed and see them compared line by line, each figure quoted from the page, with the gap calculated, the 120-day date noted and questions ready for the provider. See how it works or join the waitlist.
Questions
Who can get a good faith estimate?
CMS says patients who aren't using insurance can get one if they schedule care at least three business days ahead or ask for an estimate.
How much does the dispute process cost?
CMS charges a $25 non-refundable fee. If the decision goes your way, the fee is subtracted from what you owe the provider.
Can the provider send my bill to collections during a dispute?
No. CMS says the provider can't send the bill to collections or threaten to while the dispute is open.
What if I never got an estimate?
You can't use the dispute process without one, but CMS says you can submit a complaint if you should have received one.
Sources
- CMS: Good faith estimate (checked October 10, 2026)
- CMS: Dispute a medical bill (checked October 10, 2026)
- CMS: No Surprises Act protections for consumers (checked October 10, 2026)
- CMS: How to read your medical bill (checked October 10, 2026)
About this guide. Prepared by the EasyToDecode editorial team. Facts were checked against the official sources listed above (last checked October 10, 2026).
How we prepare and check our guides
General information, not legal, financial or tax advice. Rules differ by state, province and territory and change over time; check the sources and, for decisions with legal or financial consequences, a qualified professional.