Medical bill dispute letter (free template)

Updated October 1, 2026 · How we write our guides

When to use it

Use this letter when a call to the billing office didn't fix a charge you think is wrong. It names each charge, says why it looks wrong, and asks for a corrected bill. It also asks the provider to hold your account while it reviews your dispute. Attach copies of your bill and your explanation of benefits (EOB).

You found a charge that looks wrong, and a call to the billing office didn't fix it. This letter puts your dispute in writing. It names the charge, says why it looks wrong, and asks for a corrected bill.

Our guide on how to dispute a medical bill walks through each step, from the first call to where to turn if you're stuck.

When to use this letter

Use it for most billing errors, such as:

A service, drug, or supply you didn't get
A bill that's higher than your share on your explanation of benefits (EOB)
A payment or insurance discount that's missing
A wrong date of service
A code for a more complex visit than you had

Some problems have their own letter:

Your situation	Letter to use
The same charge listed twice	Duplicate charge letter
The provider never billed your insurer, or billed the wrong plan	Letter asking the provider to bill insurance first
A surprise out-of-network bill	Surprise bill dispute letter

If your bill shows only totals, ask for an itemized bill first. Our itemized bill request letter gives you the words.

What to fill in

Your name and contact details, and the provider's billing address
The patient's name, the account number, and the date of service
The amount the bill asks you to pay
Each charge you're disputing: its date, description, amount, and why it looks wrong
The date you called, and the name of the person you spoke with

Be specific about why a charge looks wrong. For example: "I didn't get this test. My visit summary doesn't list it." Or: "My EOB says I owe $230, but this bill asks for $2,030."

If you're disputing more than 1 charge, copy the charge line and add 1 line for each.

Fill in your details

Optional. What you type stays on this page. We don't save it or send it anywhere.

Your name

Your address

Your city, state, ZIP

Your phone

Your email

Today's date

Provider name

Provider billing address

Patient name

Account number

Date of service

Amount due on bill

Date of charge

Description of charge

Amount of charge

Why this charge looks wrong

Date you called

Name of person you spoke with

What to attach

Send copies, never originals. Mark each charge you're disputing on your copy of the bill.

The bill, or the itemized bill if you have it
Your EOB for the same visit, if you have insurance
Receipts or bank records for anything you paid
Your visit summary or discharge papers, if they show what care you got

How to send it

Send the letter by certified mail with a return receipt, so you can track delivery. If the provider's patient portal takes messages, you can send it there and attach your copies. Save a screenshot of the sent message.

Keep a copy of the letter and everything you attached. Note the date you sent it.

What happens next

The billing office may call you, send a corrected bill, or write back to explain the charge. If you don't hear back in about 2 weeks, call and ask about your dispute. Write down who you spoke with and what they said.

If the problem is how your insurer processed the claim, call the member services number on your insurance card. Sometimes the provider only needs to send a corrected claim. Sometimes you need to file an appeal. For most private plans, you have 180 days from the denial notice to file an internal appeal. Our guide on how to appeal an insurance denial explains how.

Didn't use insurance? If the bill is at least $400 more than your good faith estimate, you may be able to start a federal dispute. You have to start within 120 days of the bill. See our guide to good faith estimate disputes.

If the provider still won't fix a clear error, our guide on how to dispute a medical bill lists the offices that take complaints.

Common questions

What should I include in a medical bill dispute letter?

Include your name, the patient's name, the account number, and the date of service. List each charge you're disputing, its amount, and why you think it's wrong. Say what you want, like a corrected bill or a refund, and ask them to hold the account while they review it. Attach copies, not originals, of the bill, your EOB, and any receipts.

Is a dispute letter the same as an insurance appeal?

No. A dispute is with the provider about what it billed you. An appeal is with your insurer about what it paid or denied. If your EOB shows a denial or less coverage than you expected, you may need an appeal. For most private plans, you have 180 days from the denial notice to file an internal appeal.

Should I pay the bill while my dispute is open?

Pay any part of the bill you agree with, so that part stays current. For the part you're disputing, ask the provider to hold the account while it reviews your letter, and note who agreed. A hold is usually a request, not a right, so keep a copy of your letter and follow up if you don't hear back.

Can I dispute a medical bill after I've paid it?

Yes. Paying doesn't stop you from asking the provider to review a charge. Use this letter, attach a copy of your receipt, and ask for a corrected bill and a refund of anything you didn't owe. If your insurer also needs to reprocess the claim, ask the provider to send a corrected claim, then check the new EOB.

Sources

Reading your explanation of benefits (EOB), Centers for Medicare & Medicaid Services. Accessed October 1, 2026.
Internal appeals, HealthCare.gov. Accessed October 1, 2026.
Dispute a bill (patient-provider dispute resolution), Centers for Medicare & Medicaid Services. Accessed October 1, 2026.

This is general information, not legal or medical advice. Rules can depend on your plan and your state. Romi Care isn't an insurer, law firm, collection agency, or government program.