CaseHero

How to dispute a medical bill

A surprising share of medical bills contain errors, and you do not have to pay one you have not checked. This guide walks through disputing a medical bill the way federal consumer guidance describes, and how to keep proof of every call along the way.

Step 1: Get the charges in writing

Start by asking for the detail. You can request a list of the costs for each medical item or service you are being billed forsource. A summary balance is not enough to dispute. You need the line items.

Step 2: Compare it to your Explanation of Benefits

Your health plan sends an Explanation of Benefits, which is a summary of the total charges and how much you and the plan will pay. It is not a billsource. Put the itemized bill next to the Explanation of Benefits and compare them. See how to read an EOB.

Step 3: Look for common errors

The frequent problems are duplicate charges, charges for services you did not receive, wrong dates of service, and amounts that do not match what your plan said it allowedsource. Flag anything that does not line up.

Step 4: Call, and keep a record of the call

Call the billing office. Ask for the agent name and a reference number for the call, and write down what you are told and any promise to adjust the bill. Where your state allows it, record the call so you have proof. See how to prove what they told you on the phone and call recording laws by state.

Step 5: Dispute in writing

Follow up in writing. A written dispute creates a paper trail. If your bill has gone to a debt collector, you generally have 30 days after first contact to ask the collector to verify the debtsource. Use our medical bill dispute letter and itemized bill request letter.

Step 6: Escalate

If you are uninsured or pay your own way, you can ask for a Good Faith Estimate before a scheduled servicesource, and if the final bill is at least $400 more than that estimate you may be able to use the patient-provider dispute resolution process, which has a 120-day window to start and a $25 feesource. If your bill is a surprise out-of-network charge, contact the No Surprises Help Desk at 1-800-985-3059source, and see surprise medical bill: what to do.

Frequently asked questions

Can I be made to pay a medical bill I am disputing?

If a surprise-billing dispute applies, and your bill is already in collections, the provider or facility must stop pursuing payment until the dispute process is resolvedsource. Rules vary by situation, so confirm with the source.

Does an unpaid medical bill hurt my credit?

The three nationwide credit bureaus removed medical collection debt with a balance under $500 from credit reports starting in 2023source. A separate federal rule finalized in January 2025 that would have removed medical bills from credit reports was vacated by a federal court on July 11, 2025 and is not in effectsourcesource. Confirm the current status before relying on it.

What if the bill is for an emergency or out-of-network care I did not choose?

That may be a surprise bill covered by the No Surprises Act. See surprise medical bill: what to do.

Should I record my calls with the billing office?

Recording is the cleanest proof of what you were promised, but whether you can record depends on your state. See call recording laws by state.

Sources

Important

This guide is general information, not legal advice. Federal rights have conditions and exceptions, and laws change. Confirm anything important at the primary government source linked on this page, or with your own counsel.