What to Do If a Medical Bill Is Wrong

Signs your medical bill is wrong

The bill is unusually high for the care you got, charges repeat the same line twice, lists services you don't recognize, or asks you to pay more than your EOB says you owe. Any of these is a reason to pause and verify before paying.

• The total is much higher than your EOB's patient responsibility.
• The same charge appears more than once.
• It lists dates, providers, or services you don't recognize.
• It charges you for things that should have been covered.
• You were double-billed by two different providers for one visit.

Step 1 — Don't pay yet

You are not required to pay a bill you're disputing, and paying it can make corrections harder. Put the dispute in writing first. Tell the billing office you're reviewing the bill and ask them to hold it.

Step 2 — Get the itemized bill

Request a fully itemized statement with CPT codes and dates for every charge. Compare it against your Explanation of Benefits line by line. The EOB is the authoritative record of what insurance processed and what you actually owe.

If you don't have the EOB handy, you can download it from your insurer's portal or call the claims line to have it re-sent. While you're at it, ask the billing office whether they can email the itemized statement — a PDF you can open alongside the EOB makes the line-by-line comparison dramatically easier than reading two paper documents.

Step 3 — Identify the specific errors

Mark each problem line and categorize it: duplicate charge, service never received, wrong billing code, wrong date, charge exceeding the EOB, or balance billing that violates the No Surprises Act. Specific, documented errors are much easier for a billing department to fix than a vague "this bill is too high."

Step 4 — Send a written dispute

Write to the billing department with the account number, a list of disputed lines, the reason each is wrong, and attachments (itemized bill, EOB, medical records). Ask for a corrected bill and written confirmation. Send by email and certified mail.

1. 1Gather the itemized bill, EOB, and appointment records.
2. 2List each disputed line and why it's wrong.
3. 3Send the dispute in writing and request a correction.
4. 4Ask them to pause collections during review.
5. 5Follow up every 30 days until you get a written resolution.

Step 5 — Escalate if it isn't fixed

If the billing office won't correct a documented error, escalate in order: your insurance company (it can refuse overcharges and rebill properly), the state insurance department, the CFPB, and your state attorney general's consumer protection division. Each escalation is free and creates a paper trail.

Before you escalate, one more free step is worth trying: ask for the hospital's patient advocate or ombudsman. Large systems keep patient-relations staff whose job is resolving exactly these standoffs, and they can overrule a billing clerk who insists the bill is correct.

Common errors worth checking for

Duplicate line items and unbundling (splitting one service into multiple billable charges), upcoding (billing a more expensive code than the service performed), facility fees at the wrong level, room charges for days you weren't hospitalized, and balance billing after an out-of-network surprise.

• The same code billed twice for one service.
• A "new patient" or complex-visit code when you had a routine follow-up.
• Supplies and medications charged separately when they're included in the procedure.
• A date you weren't in the facility.
• Facility and professional fees from a provider you never saw.