Guides ยท Last reviewed October 28, 2026
Dispute a medical bill error on your credit report: step by step
If a medical bill shows up wrong on your credit report, dispute it with each credit bureau that has the error and with the business that reported it. The bureau has 30 days to investigate.
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Step 1: get your reports
The FTC says you can get free copies from each of the three bureaus (Experian, Equifax, and TransUnion) at AnnualCreditReport.com, and the bureaus let you check your report once a week for free there. Read each report and circle any medical accounts that look wrong.
Step 2: dispute with each bureau that has the error
- Explain the problem in writing. Use the bureau's dispute form if it has one.
- Attach copies, not originals, of supporting documents such as an insurance EOB or a receipt.
- Send it by certified mail and pay for a return receipt. You can also dispute online or by phone.
- Keep records of everything you send.
Your letter should include: your complete name and address, each error you want fixed and why, copies of supporting documents, and a copy of your report with the errors circled.
Step 3: dispute with the business that reported it
Write to the business that reported the error (for example a collection agency). Identify each inaccurate item, explain why, and include copies of supporting documents. If no dispute address is listed, ask the business for one.
What happens next
- The bureau has 30 days to investigate, whether you filed online, by phone, or by mail. The FTC states the 30 days applies to the bureau, not the business.
- If it considers your dispute frivolous or irrelevant, it must stop investigating and tell you why.
- The bureau sends your evidence to the business. If the business finds the information is wrong, it must notify all three bureaus.
- The bureau must give you the results in writing. If your report changes, you get a free copy that doesn't count toward your annual free report.
- If asked, it must send correction notices to anyone who got your report in the past six months, or employers in the past two years.
If the dispute isn't resolved, you can ask that a statement of your dispute be added to your file and included in future reports.
Check the bill itself, too
Many credit report errors start with a billing error. Get an itemized bill, check whether insurance should have paid, and read what medical debt can appear on credit reports in 2026. If a collector contacted you, see how to dispute a debt in 30 days.
Common questions
How long does a credit bureau have to investigate a dispute?
The FTC says 30 days, whether you filed online, by phone, or by mail.
Should I dispute with the bureau or the collector?
Both. The FTC advises disputing with each bureau that has the error and with the business that reported it.
Where do I get my free credit reports?
AnnualCreditReport.com has free reports from Experian, Equifax, and TransUnion.
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Sources
Billmira is not a credit repair service and can't dispute items for you. Billmira is a self-help information tool, not a law firm, and this isn't legal, tax, or medical advice. Rules change and plans differ; check the official sources above and your own documents.