Denial Reason
Provider Not Authorized
Your insurer denied the claim because the provider who treated you was not authorized by your plan — either not in-network, not credentialed with the insurer, or lacked required authorization for a specific service.
42%
Appeal success rate
NAIC 2023
42%
External review overturn
NAIC data
What Strengthens Your Appeal
- ✓Documentation that no in-network provider was available for your specific condition or location
- ✓Evidence of an emergency or urgent situation requiring immediate treatment
- ✓Proof that the provider was listed as in-network at the time of service (insurer directory errors)
- ✓No Surprises Act protections if applicable (facility-based services)
- ✓Prior authorization for the provider if one was obtained but not processed
Appeal Packet: What to Include
- 1Denial letter citing specific authorization failure
- 2Documentation showing lack of in-network alternatives
- 3Evidence of emergency or urgent care circumstances
- 4Insurer's provider directory showing the provider was listed as in-network, if applicable
- 5No Surprises Act filing if this is a surprise medical bill situation
What to Ask Your Doctor or Provider
Your provider plays a key role in your appeal. Ask them for:
- →Confirmation of their credentialing status with your insurer
- →Documentation of any authorization obtained for the service
- →Evidence of an emergency or urgent care circumstance if applicable
Step-by-Step Escalation
If your first appeal fails: File a No Surprises Act complaint if applicable. If the provider was incorrectly listed as in-network, file a state insurance complaint for network adequacy failure or misleading directory information.
1
File internal appeal citing lack of in-network alternatives or emergency circumstances
Deadline: Within 180 days
2
File No Surprises Act complaint at cms.gov if applicable
Deadline: Within 120 days of billing
3
File state insurance complaint for incorrect provider directory listings
Find your regulator →4
Request external review
Deadline: Within 4 months of internal denial
Procedure-Specific Unauthorized Provider Guides
Related Denial Reasons
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