Your Bill Came Back Higher Than the Good Faith Estimate. Here's the $400 Rule

When you scheduled the procedure, someone in the billing office told you it would run about $1,800, and you planned around that number. The bill that just arrived says $3,650. Same procedure, same facility, no complications, and nobody warned you the price had doubled. If you were paying cash, that gap is exactly what a federal process exists to fix, and the paper that unlocks it is the Good Faith Estimate you were entitled to before the care happened.

What is a Good Faith Estimate and who gets one?

Under the No Surprises Act, which took effect January 1, 2022, providers and facilities must give uninsured and self-pay patients a written estimate of expected charges for scheduled items and services, in plain language, before the care happens. The rule (45 CFR 149.610) sets the timing: schedule at least 3 business days ahead and the estimate must arrive within 1 business day; schedule 10 or more business days ahead and it must arrive within 3. Ask for one without scheduling anything, and they owe it to you within 3 business days. It applies to doctors' offices, hospitals, surgery centers, labs, and imaging, for care that isn't an emergency.

What has to be on it

• A description of each item and service the provider reasonably expects to furnish for the scheduled care, with the expected charge for each.
• Service codes and diagnosis codes where applicable, the same codes the eventual bill will carry. This is what makes a line-by-line comparison possible later.
• The provider's and facility's name, NPI, and tax ID, so you know exactly whose charges each line belongs to.
• Disclaimers stating the GFE is an estimate, that you have a right to dispute a bill substantially above it, and where to learn how.
• It must be written (paper or electronic, your choice) and free. A verbal quote over the phone is a courtesy; a GFE is a document. Always say the words "I'd like a Good Faith Estimate."

How to request one

When you schedule, tell them you are self-pay and ask for a Good Faith Estimate. If they don't know what that is, ask for the billing office; the front desk often hasn't heard the term. Ask that it cover everything expected for the visit: the procedure, facility fees, anesthesia, labs, imaging. Charges from separate co-providers (the anesthesiologist who bills independently, for example) may arrive as their own estimates, and each provider's estimate stands on its own for dispute purposes. Keep the GFE somewhere you can find it. It has no power in a drawer you can't locate; it has a lot of power stapled to a bill that's $400 too high. If the numbers on it look high to begin with, that's your cue to shop, and the cash price guide covers how.

The $400 rule: when you can dispute the bill

Here's the teeth. If the billed charges from any provider or facility are at least $400 more than that provider's expected charges on the GFE, you can take it to the federal patient-provider dispute resolution process. The comparison is provider by provider: if the surgeon billed close to estimate but the facility billed $600 over its own line, you can dispute the facility's bill. New charges that never appeared on the GFE at all count toward the gap, which is exactly the "they added three things I never agreed to" scenario. The dispute itself runs like this:

1. Gather three things: the Good Faith Estimate, the bill, and the dates on each. You'll need copies of the GFE and the bill to submit.
2. Start within 120 calendar days of the date on the bill. This deadline is firm; a strong case filed on day 121 is a dead case.
3. File with CMS online, by mail, or by fax through the federal dispute portal, and pay the $25 administrative fee.
4. An independent dispute resolution entity (a third-party reviewer, paid by neither side) compares the bill to the estimate, item by item.
5. While the dispute is pending, the provider must pause collections on the disputed charges and can't threaten or retaliate. You can also settle directly with the provider mid-process; many billing offices fold once a federal reviewer is involved.
6. If you win, you pay an amount held to the estimate (the reviewer can allow a charge above it only if the provider proves the extra care was unforeseeable), and your $25 fee is credited against what you owe. If the reviewer sides with the provider, you owe the billed amount, and you're out only the $25.

Use the GFE even when you're under the $400 line

A bill $250 over the estimate can't go to federal dispute, and it's still worth fighting. Call the billing office, cite the GFE, and ask them to honor it; put it in writing if the call goes nowhere. The estimate is the provider's own written representation of the price, and billing offices know it looks terrible to walk away from. Stack it with the other levers: an itemized bill review to catch outright errors, a negotiated cash discount, and if money is the real problem, charity care, which most nonprofit hospitals must offer.