Cigna Denied Your MRI? Here's How to Appeal

An MRI denial from Cigna can feel bewildering. Your doctor ordered the scan because it is clinically necessary — and now an insurance company is overriding that judgment. Cigna outsources nearly all of its radiology Prior Authorization Denied: How to Appeal" class="auto-link">prior authorization decisions to eviCore healthcare, a utilization management company whose algorithms screen imaging requests before a human reviewer ever sees your case. When your MRI is denied, it is often eviCore's criteria — not Cigna's own medical team — that made the decision. Understanding this system is the key to appealing effectively.

Why Insurers Deny MRI Claims

Cigna's radiology prior authorization process is managed through eviCore, which uses evidence-based imaging guidelines — primarily based on the ACR Appropriateness Criteria and InterQual standards — to determine whether a specific MRI is appropriate for a specific clinical indication. When the ordering physician submits a prior authorization request, eviCore's system reviews the clinical information: diagnosis codes, symptoms, prior treatments. If the submission is incomplete, uses the wrong diagnosis code, or omits clinical details eviCore's algorithm requires, an automatic denial is generated.

Insufficient clinical documentation is the most common reason MRI requests are denied. For a lumbar spine MRI, eviCore typically requires documented symptoms of six or more weeks' duration, failure of conservative treatment, and specific red flag symptoms or neurological deficits. For a brain MRI, the clinical indication must map to eviCore's approved indications — headache alone is often insufficient without documentation of progressive severity, neurological symptoms, or new onset in patients over 50.

eviCore also denies MRI requests when it believes a less advanced imaging study is the appropriate first step. This "imaging cascade" approach is built into eviCore's criteria for many musculoskeletal and neurological conditions. Under the ACA and ERISA (29 CFR § 2560.503-1), you have the right to request the complete criteria eviCore applied and to challenge a denial that contradicts ACR Appropriateness Criteria — the gold standard for imaging utilization.

How to Appeal

Step 1: Confirm Whether eviCore or Cigna Issued the Denial

Call 1-800-CIGNA-24 and ask specifically whether eviCore reviewed your request. eviCore has its own separate appeal process in addition to Cigna's internal appeal. You can and should pursue both simultaneously. Ask for the eviCore case number — you will need it for peer-to-peer review scheduling.

Step 2: Request Immediate Peer-to-Peer Review With eviCore

This is the fastest and most effective step for MRI denials. Your physician calls eviCore's physician reviewer directly and provides the clinical context that was missing from the initial submission. eviCore reverses a large percentage of MRI denials at this stage. This step is free and should happen within 24 to 48 hours of receiving the denial.

Step 3: File a Level 1 Internal Appeal With Cigna

If peer-to-peer review fails, file a formal Level 1 internal appeal within 180 days of the denial. Include a supplemental letter from your ordering physician with all required clinical documentation: symptom duration, prior treatments, relevant exam findings, and why this specific imaging study is required to answer a specific clinical question.

Step 4: Compile ACR Appropriateness Criteria Evidence

The American College of Radiology publishes appropriateness criteria for every imaging indication. If your MRI request maps to an ACR "usually appropriate" rating for your clinical scenario, cite this directly. Cigna and eviCore cannot maintain a denial that contradicts ACR standards when those standards are explicitly referenced.

Step 5: File Level 2 Internal Appeal if Needed

If Level 1 is denied, file a Level 2 appeal with additional clinical documentation addressing the reviewer's specific objections.

Step 6: Request External Independent Review

External review provides access to an independent radiologist or specialist who will apply ACR Appropriateness Criteria rather than eviCore's more restrictive proprietary guidelines. Studies show external reviews overturn MRI denials at significant rates when clinical documentation is comprehensive.

What to Include in Your Appeal

• Denial notice identifying whether eviCore or Cigna made the determination, and the eviCore case number
• Your ordering physician's complete clinical notes documenting symptom onset, duration, severity, prior treatments, and relevant physical exam findings
• Prior imaging results and radiology reads showing why further imaging is needed
• Specialist letter explaining what clinical question the MRI is intended to answer
• ACR Appropriateness Criteria documentation for your specific indication, with the appropriateness rating for your clinical scenario
• Evidence of red flag symptoms or neurological deficits if applicable

Fight Back With ClaimBack

Cigna and eviCore's radiology prior authorization process is designed to create friction — complex forms, automated reviews, rapid denials, and a peer-to-peer process that requires your physician to spend time on hold. But MRI denials are among the most commonly overturned on appeal, precisely because they so often come down to incomplete documentation rather than genuine clinical inappropriateness. ClaimBack generates a professional appeal letter in 3 minutes that identifies exactly what documentation eviCore needs and how to frame the clinical argument.

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Related Reading

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