If you need to appeal a denied medical claim, the first step is understanding why the payer denied it and whether the claim should be corrected or formally appealed. You receive the remittance, review the claim, and there it is: denied. The first instinct may be to correct the claim and send it back. But before changing anything, take a closer look.
Not every denied medical claim needs to be corrected. Sometimes the claim was submitted correctly and the payer’s determination needs to be challenged.
Knowing when to correct a claim and when to appeal it is an important part of denial management and can make a real difference in your practice’s accounts receivable.
What Is a Medical Billing Appeal?
A medical billing appeal is a formal request asking an insurance payer to reconsider how a claim was processed or denied.
An appeal is different from simply resubmitting a claim.
If the original claim contains an error, such as incorrect patient information, a missing modifier, or another billing issue, a corrected claim may be appropriate.
If the claim was billed correctly and you disagree with the payer’s decision, an appeal may be the better next step.
Before doing either, find out exactly why the claim denied.
Step 1: Review the Claim Denial
Start with the Electronic Remittance Advice (ERA) or Explanation of Benefits (EOB).
Review the Claim Adjustment Reason Code (CARC) and any Remittance Advice Remark Codes (RARCs) associated with the denied service.
Then compare those codes with the claim itself.
Review:
- CPT or HCPCS codes
- ICD-10 diagnosis codes
- Modifiers
- Units
- Provider information
- Date of service
- Authorization information
- Other services billed on the same date
- Related claims
The denial code tells you where to start. It does not always tell you the entire story.
Step 2: Decide Whether to Correct or Appeal the Claim
Before you appeal a denied medical claim, determine whether the original claim was submitted correctly. If the claim contains an actual billing error, a corrected claim may be the appropriate next step.
Ask a simple question:
Was something wrong with the claim we submitted?
If yes, determine whether the payer requires a corrected claim.
If no, don’t automatically change the billing just to get the claim through.
For example, if a payer denies a service because it believes a modifier is inappropriate, but your review shows that the modifier was correctly reported based on the documentation and applicable guidelines, changing the modifier may not be the appropriate response.
That claim may need an appeal.
Step 3: Research the Payer’s Policy
Before writing an appeal letter, find the policy behind the denial.
Depending on the claim, this may mean reviewing:
- The payer’s reimbursement policy
- Provider manual
- Medical policy
- Authorization requirements
- State Medicaid billing guidelines
- Medicare guidance
- Applicable coding guidelines
- Fee schedules
- Provider contract requirements
You want to answer one question:
What supports our position that this claim should be paid?
The stronger your answer to that question, the stronger your appeal.
Step 4: Gather Your Supporting Documentation
Once you know why you’re appealing, gather the documentation that proves your case.
Depending on the denial, that could include medical records, operative reports, authorization records, coding guidance, payer policies, proof of timely filing, claim acceptance reports, or previous correspondence with the payer.
Don’t send a stack of records simply because they’re available.
Send documentation that supports the specific reason you’re asking the payer to reconsider the claim.
Step 5: Write the Medical Claim Appeal Letter
To successfully appeal a denied medical claim, your letter should clearly identify the denial, explain why you disagree with the payer’s determination, and point to the documentation or policy supporting your position. Your appeal letter doesn’t need to be complicated.
It does need to be specific.
A good medical billing appeal letter should identify the claim, state the denial reason, explain why you disagree with the denial, reference the documentation or policy supporting your position, and clearly ask the payer to reconsider and reprocess the claim.
Sample Medical Claim Appeal Letter
RE: Request for Claim Reconsideration/Appeal
Patient: [Patient Name]
Member ID: [Member ID]
Claim Number: [Claim Number]
Date of Service: [Date]
Procedure Code(s): [CPT/HCPCS]
Denial Code: [CARC/RARC]
To Whom It May Concern:
We are requesting reconsideration of the above-referenced claim, which was denied for [denial reason].
We reviewed the original claim, supporting documentation, and applicable payer guidelines and believe the service was billed appropriately.
The claim was submitted with [briefly explain the relevant code, modifier, diagnosis, authorization, or billing circumstance]. Per [payer policy, coding guideline, authorization record, or other supporting source], the billing is appropriate because [brief explanation].
We have included [medical records, operative report, authorization, payer policy, proof of timely filing, etc.] to support this request.
Please reconsider the denial and reprocess the claim according to the patient’s benefits and applicable reimbursement guidelines.
Thank you for your review.
Sincerely,
[Name/Department]
[Practice Name]
[Contact Information]
Step 6: Submit the Appeal Before the Deadline
Don’t assume every insurance payer has the same appeal timeframe or submission process.
Before submitting, verify the payer’s requirements for that patient’s plan.
Some payers accept appeals electronically through a provider portal. Others may require a specific form, fax, or mailed documentation.
Document when and how the appeal was submitted and keep the confirmation or reference number.
Step 7: Follow Up on the Appeal
An appeal isn’t finished when it’s submitted.
Create a follow-up date and track the claim until you receive a determination.
If the payer upholds the denial, review the response before closing the account. Depending on the payer, plan, denial reason, and amount involved, there may be additional reconsideration or appeal options available.
Don’t Just Work the Denial. Look for the Pattern.
One denied claim is a claim issue.
Twenty claims denying for the same reason may be a revenue cycle issue.
If you’re seeing the same denial repeatedly, look beyond the individual account.
Is the same CPT code involved?
The same payer?
The same provider?
The same modifier?
The same authorization problem?
The same workflow?
This is where denial management becomes more valuable than simply working a queue.
Resolving the individual claim helps recover today’s revenue. Identifying why the denial keeps happening can protect tomorrow’s.
When Medical Claim Denials Start Affecting Your Accounts Receivable
Appeals take time.
Someone has to research the denial, review the payer’s policy, gather documentation, submit the appeal, follow up, and track the outcome. When practices are already stretched thin, denied claims can quickly become aging accounts receivable.
And the longer they sit, the harder they can become to recover.
Elevare Management Solutions works with healthcare practices to identify revenue cycle issues, manage aging accounts receivable, and address the billing problems that can keep reimbursement from moving.
Knowing how to appeal a denied medical claim is only one part of effective denial management. Practices should also track denial trends and identify recurring issues before they create larger accounts receivable problems.
Where practices go to elevate.
This article is intended for general educational purposes and does not constitute legal, compliance, or coding advice. Payer requirements, reimbursement policies, contracts, and appeal procedures vary. Always verify requirements applicable to the individual payer, plan, and claim.