Cigna Denied Your Claim in Colorado? How to Fight Back

Cigna (Evernorth) is one of Colorado's major commercial health insurers. Colorado has enacted strong consumer protections including robust surprise billing laws under SB 20-230, mental health parity enforcement, and a proactive Division of Insurance that investigates consumer complaints. If Cigna denied your claim, Colorado law and federal law give you real tools to fight back.

Why Insurers Deny Claims in Colorado

Cigna's most common denial reasons in Colorado include:

• Not medically necessary — Cigna's reviewer determined the treatment does not meet its Medical Coverage Policy (MCP) or eviCore clinical criteria
• Prior Authorization Denied: How to Appeal" class="auto-link">Prior authorization not obtained — The service required pre-approval that was not obtained before treatment
• Out-of-network provider — The provider is not in Cigna's Colorado network
• Service not covered — The treatment is excluded from your plan
• Step therapy required — Cigna requires a less expensive alternative before authorizing the prescribed treatment
• Mental health parity violation — Cigna applying stricter criteria to mental health benefits than to comparable medical benefits
• Insufficient documentation — Clinical records submitted do not satisfy Cigna's specific criteria

Identify the exact denial reason before building your appeal strategy.

How to Appeal a Cigna Denial in Colorado

Step 1: Read and Document the Denial

Your denial letter must include the specific reason, plan provision or clinical criteria relied on, and your appeal rights with deadlines. Under ERISA Section 503 and ACA regulations, request the complete claims file — including reviewer notes and the specific Cigna MCP applied — if not provided. Colorado requires insurers conducting utilization review to use qualified clinicians in the relevant specialty under Colorado insurance regulations.

Step 2: Gather Evidence and Identify Colorado-Specific Arguments

Collect medical records, physician letters, and clinical guidelines. For surprise billing denials, gather documentation that the care qualifies under Colorado SB 20-230 and the federal No Surprises Act (42 U.S.C. § 300gg-131). For step therapy denials, document prior drug trials and prepare citations to Colorado HB 19-1286, which establishes step therapy exception rights. For mental health denials, gather evidence comparing Cigna's mental health criteria against criteria for comparable physical health conditions.

Step 3: Request a Peer-to-Peer Review

Your treating physician can call Cigna or eviCore to speak directly with the reviewing clinician. Many Colorado denials are resolved at this stage before a formal written appeal is needed.

Step 4: File Your Level 1 Internal Appeal

Submit within 180 days of the denial. Send via certified mail AND through myCigna.com. Include all documentation and cite applicable Colorado law (SB 20-230, HB 19-1286) and federal protections (ACA, ERISA, MHPAEA, No Surprises Act).

Step 5: Escalate if Needed

File with the Colorado Division of Insurance at doi.colorado.gov — (303) 894-7490. The IRO's decision is binding on Cigna. File a complaint with the Colorado DOI simultaneously — Colorado actively enforces mental health parity and has a track record of investigating and acting on parity violations. For high-value denials, consult an insurance appeal attorney in Colorado.

What to Include in Your Appeal

• Cigna denial letter with the specific denial reason and MCP or criterion cited
• Complete medical records supporting your diagnosis and treatment
• Physician letter of medical necessity addressing the denial reason point by point using Cigna's MCP language
• Colorado law citations — Colorado SB 20-230 (surprise billing), HB 19-1286 (step therapy reform) as applicable
• Comparison of Cigna's mental health criteria versus criteria for comparable physical conditions if mental health parity is at issue

Fight Back With ClaimBack

Colorado's strong surprise billing laws, mental health parity enforcement, and step therapy reform give Cigna members real leverage on appeal. ClaimBack identifies the clinical evidence, the Cigna Medical Coverage Policies, and the Colorado and federal law arguments that apply to your specific denial. ClaimBack generates a professional appeal letter in 3 minutes.

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Related Reading

• How to Write an Insurance Appeal Letter
• What Is Medical Necessity?
• Internal vs External Insurance Appeal