Appeal: coding error and reprocessing
Asks your plan to reprocess a claim that was denied because of a billing or coding mistake, after your provider has corrected and resubmitted it.
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- A template, not legal advice
This one is for a specific kind of coverage
It is written for the coverage tagged above. If you have a different kind (for example Medicare or Medicaid instead of a job-based or individual plan), it may cite the wrong rules. Check what kind of coverage you have and use the letter written for it.
When to use this, and what it is not
When to use this. Use this after your provider's billing office has found the mistake and sent the plan a corrected claim. The provider must correct and resend the claim; this letter asks the plan to reprocess it.
This is a template, not legal advice. Read it, change anything that is not true for you, and send it only when you are satisfied. Your notice and your plan document control.
Fill in the letter
Your letter
[Your name] [Your address]
13 November 2026
[Name and address of the plan's appeals department]
Re: Appeal: coding error and reprocessing Plan: [Name of the health plan] Member ID: [Member ID] Claim or reference number: [Claim or reference number]
To the reviewer:
I am writing about claim [Claim or reference number] for [The care or drug that was denied] from [Doctor, hospital or pharmacy] on [Date of the care], under [Name of the health plan], member ID [Member ID]. On [Date on the denial notice] the plan denied or reduced payment on this claim and gave this reason: [The reason the plan gave]
The problem is a billing or coding error by the provider's office, not a problem with the care: [What the billing error was] The provider's billing office ([The billing office contact]) corrected the error and sent the plan a corrected claim on [Date the corrected claim was sent to the plan], reference [The corrected claim number].
I ask you to reprocess this claim using the corrected information, send me a new Explanation of Benefits, and pay what my plan provides for this service. If you treat the corrected claim as a new claim, please link it to the original so that the original denial does not stand. If you have not received the corrected claim, or need anything more from me or the provider, please tell us both what it is.
If the plan will not reprocess the claim, please treat this letter as my appeal of the denial. Under the federal claims and appeals rules, including Title 29 of the Code of Federal Regulations (CFR), sections 2560.503-1 and 2590.715-2719 (for individual coverage, 45 CFR 147.136), I am entitled to a full and fair review. I ask that someone who was not involved in the first decision, and who is not that person's subordinate, decide this appeal and give no deference to the first decision. Please consider every document and comment I send, including anything that was not before the first reviewer.
Please send me your decision in writing within the time the rules allow. If the plan will not correct the claim, I will complain to the agency that regulates my plan.
Enclosures: 1. Copy of the denial letter or Explanation of Benefits 2. The billing office's letter confirming the error, if I have one 3. Proof the corrected claim was sent, if I have it
Sincerely, [Your name]
Before you send it
Send it to the appeals address printed on your denial notice, by a method that proves delivery, such as certified mail with a return receipt or the plan's online portal with a saved confirmation page. Send a copy of the same letter to the provider's billing office. Keep a complete copy of the letter and everything you enclose, and write down the date and the method you used.
What to enclose
- Copy of the denial letter or Explanation of Benefits
- The billing office's letter confirming the error, if I have one
- Proof the corrected claim was sent, if I have it
What happens next
- Ask the billing office to confirm the plan received the corrected claim, and ask the plan the same. Call the plan after about two weeks and write down the date, the name of the person and what they said.
- Your plan must decide within 60 days after it receives an appeal of a claim for care you have already had. If your plan has two appeal levels, each level gets 30 days. Check the date on your notice, which controls.
- External review covers decisions that involve medical judgment, so a pure coding denial may not qualify. If the plan will not reprocess a corrected claim, complain to the agency that oversees your plan.
- Ask the billing office to hold the bill while the plan reprocesses the claim.
- If you are writing for someone else, tick "I am writing for someone else". The plan may require its own authorization form. See the letter "Name someone to act for you".
The rule behind this
Sources
Denial reasons this answers
- Denial reason
Coding or billing error
The claim itself has a wrong code, a wrong detail or a missing item. Your provider's billing office usually has to correct it and send it again. You help by asking for the codes, checking them against your records and following up.
- Denial reason
Bundled or included in another service
Your plan folded the charge for one service into the payment for another from the same visit, so it paid nothing for it. Often the provider's billing office can correct the claim, so start there.
- Denial reason
Preventive care billed as diagnostic
You went for a recommended screening or checkup that should have cost nothing, but the claim was coded as diagnostic, so you were charged. Sometimes a corrected claim from the provider fixes it.