Cigna Denial Appeals Guide
Cigna Denial Appeals Guide: Overview
Cigna denials can be appealed within 180 days (365 days for California in-network). First-level appeal reviewed within 60 days. Success requires original denial letter, corrected claim details, clinical evidence, and rebuttal addressing each reason. Second-level appeals available if first denied. External review available if both internal appeals fail.
Key Requirements
- Timely Filing: File within 180 days (365 in CA). Late appeals rejected without review.
- Denial Documentation: Include original EOB, claim detail, and specific CARC code. Reference throughout appeal.
- Clinical Evidence: Provide medical records, physician notes, treatment history, and evidence supporting medical necessity addressing denial reason.
- Written Rebuttal: Address each denial reason with corrected information and clinical evidence.
- Submission: Use Cigna portal (fastest), mail, or phone. Obtain tracking reference number.
- Second Appeal: If first denied, file within 180 days with additional clinical or coding evidence.
Timeline & Process
First Appeal: Submit within 180 days (365 in CA) with documentation. Cigna responds within 60 days via mail and portal.
Second Appeal: If first denied, file within 180 days with supplemental medical evidence. Resolution within 60 days.
External Review: If both internal appeals denied, request external review through state insurance commissioner for binding decisions on medical necessity.
Common Denials
| CARC Code | Appeal Strategy | Supporting Documentation |
|---|---|---|
| CO-16 | Medical necessity appeal | Clinical records, physician statement, evidence-based guidelines, treatment history, diagnostic workup supporting procedure necessity |
| CO-45 | Coverage determination appeal | Authorization approval letter, plan document confirming coverage, member eligibility verification on service date |
| CO-50 | Coding correction appeal | Corrected claim with matching CPT codes, service delivery documentation, unbundling analysis if applicable |
| CO-197 | Re-submission appeal | Original claim receipt proof, correction notice documenting changes, reference to correction codes used |
Appeal Process
Organize documentation with denial letter first. Write rebuttal addressing CARC code and denial reason with clinical evidence and authorization documents. Submit via Cigna portal (preferred) or mail with tracking number. Upon denial, escalate to external review for medical necessity disputes.
Common Questions
What is the deadline to appeal a Cigna denial?
Standard appeal deadline: 180 days from denial date. California in-network providers: 365 days from denial. Submit within the deadline via portal, phone, or mail. Appeals filed after the deadline are rejected.
What documentation do I need for a successful appeal?
Provide original denial letter, claim detail, authorization approval letter (if applicable), complete clinical records, patient eligibility verification, and written rebuttal explaining why denial should be reversed. Organize chronologically and reference original claim number throughout.
What options exist if Cigna denies my appeal?
Request independent external review through your state's insurance commissioner. Cigna must accept external review decisions. This option is free and protects patient interests when internal appeals fail.
Altair checks Cigna requirements before submission . flagging missing authorizations and coding mismatches in real time. See how Altair works.
This reference is for informational purposes. Payer policies change frequently. Always verify against Cigna's current provider documentation. Last updated: 2026-03-16.
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