Covered Services Billed as Non-Covered
When Insurance Should Have Paid
Sometimes services that should be covered are incorrectly processed as non-covered, leaving you with a bill that insurance should have paid.
Common Reasons for Incorrect Denials
Coding Issues
- Wrong diagnosis code
- Missing modifier
- Procedure code doesn't match diagnosis
- Coding error makes service appear non-covered
Administrative Errors
- Wrong insurance ID number
- Incorrect subscriber information
- Claim filed to wrong insurance
- Timely filing deadline missed
Authorization Problems
- Pre-authorization not on file (but was obtained)
- Authorization number not included on claim
- Wrong procedure code on authorization
- Authorization expired
Processing Errors
- Service incorrectly classified
- Wrong plan applied
- Benefits not properly loaded
- Coordination of benefits issues
How to Identify the Problem
Review Your EOB
Look for explanation codes that indicate:
- "Not a covered benefit"
- "Pre-authorization required"
- "Not medically necessary"
- "Out-of-network"
Check Your Policy
Verify:
- Is this service explicitly covered?
- Are there any exclusions that might apply?
- What are the authorization requirements?
- What network restrictions exist?
Compare to Previous Claims
- Was this service covered before?
- Has anything changed in your coverage?
- Are similar services being covered?
Steps to Resolve
Step 1: Understand the Denial
- Call insurance to understand the reason
- Get the specific denial code
- Ask what would be needed for coverage
Step 2: Gather Documentation
Collect:
- Your insurance policy and benefits summary
- Prior authorization (if obtained)
- Medical records supporting necessity
- Previous claims for similar services
Step 3: Contact the Provider
Ask them to:
- Review the codes submitted
- Verify authorization was attached
- Check for any billing errors
- Resubmit with corrections if needed
Step 4: File an Appeal
If the issue isn't resolved, submit a formal appeal:
- Include all supporting documentation
- Cite policy language showing coverage
- Explain why the denial is incorrect
- Request expedited review if urgent
Pre-Authorization Issues
When Authorization Was Obtained
If you got pre-auth but it wasn't applied:
- Provide the authorization number
- Include the date authorization was given
- Attach any written authorization received
- Ask provider to resubmit with authorization
When Authorization Was Missed
Options if authorization wasn't obtained:
- Request retroactive authorization (sometimes possible)
- Appeal based on medical necessity
- Ask for exception based on circumstances
- Negotiate with provider on balance
Authorization Didn't Match Procedure
If the authorization was for something different:
- Determine if code change is appropriate
- Request updated authorization
- Appeal if procedure was medically necessary
Appeal Strategies
For Covered Services
Emphasize:
- Policy language showing coverage
- Previous approvals for similar services
- Why the service meets coverage criteria
For Medical Necessity
Provide:
- Doctor's letter explaining necessity
- Medical records supporting diagnosis
- Clinical guidelines supporting treatment
- Published medical literature if relevant
For Administrative Errors
Focus on:
- What went wrong in processing
- Correct information for reprocessing
- Timeline showing timely filing
Sample Appeal Language
"I am appealing the denial of [service] on [date] (Claim #[number]). The denial states [reason], but this is incorrect because [explanation]. Per my policy, [citation], this service is covered. I am requesting this claim be reprocessed for payment. Please find enclosed [supporting documentation]."
Escalation Options
If your appeal is denied:
- External review - Independent third-party review
- State insurance commissioner - File a complaint
- Employer HR - If employer-sponsored plan
- Legal options - For significant amounts
Don't accept a denial without investigating. Many denials are reversed when properly appealed.