Cigna Denied Your Surgery — How to Appeal

Receiving a denial letter from Cigna after you and your doctor have decided you need surgery is infuriating. But surgical denials from Cigna are among the most frequently overturned decisions in health insurance — and there is a clear, structured path to challenge them. This guide walks you through every step.

Why Cigna Denies Surgical Claims

Cigna denies surgery claims for a handful of recurring reasons:

• Not medically necessary: Cigna's clinical reviewers decide the procedure does not meet their internal medical necessity criteria, even when your surgeon disagrees.
• Prior Authorization Denied: How to Appeal" class="auto-link">Prior authorization not obtained: The procedure required preapproval and the request was not filed, filed incorrectly, or denied before surgery.
• Conservative treatment not exhausted: Cigna requires documented evidence that less invasive treatments — physical therapy, injections, medications — were tried first.
• Experimental or investigational: For newer techniques or devices, Cigna may classify the procedure as not proven effective.
• Out-of-network provider: Your surgeon was not in Cigna's network, or a participating hospital used a non-participating surgical team.

Understanding the specific reason on your EOB)" class="auto-link">Explanation of Benefits (EOB) is the first step. Request the full denial letter and the clinical criteria Cigna used — you are entitled to both under federal law.

eviCore: Cigna's Prior Authorization Vendor for Surgery and Imaging

For many surgical procedures and advanced imaging, Cigna outsources prior authorization decisions to eviCore healthcare, a separate utilization management company. If your denial came from eviCore, you are dealing with a third-party reviewer, not Cigna's internal team.

This matters because eviCore has its own appeal pathway distinct from Cigna's standard grievance process. When you receive an eviCore denial:

1. Request the eviCore denial letter and the clinical criteria applied.
2. File a reconsideration with eviCore directly — this is a separate step before Cigna's internal appeal.
3. If eviCore upholds the denial, the case then proceeds to Cigna's internal appeal process.

Many surgical approvals are won at the eviCore reconsideration stage when the surgeon submits additional clinical notes. Do not skip this step.

Step 1 — Get a Clinical Necessity Letter from Your Surgeon

The most powerful tool in a Cigna surgical appeal is a detailed letter of medical necessity written specifically to counter Cigna's denial criteria. A generic note is not enough. Your surgeon's letter should:

• Reference the specific ICD-10 diagnosis codes and CPT procedure codes being appealed
• Document your history of conservative treatment and why it failed or is not appropriate
• Cite published clinical guidelines — such as those from the American College of Surgeons (ACS), relevant specialty societies, or peer-reviewed literature — that support the procedure
• Directly address Cigna's stated denial reason using the language Cigna used in its denial letter
• State clearly that the procedure is medically necessary and not experimental

This letter should be attached to every level of appeal you file.

Step 2 — Request a Peer-to-Peer Review

Before filing a formal appeal, ask your surgeon to request a peer-to-peer review with Cigna's medical director. This is a phone call between your surgeon and the Cigna physician who made or reviewed the denial.

Peer-to-peer reviews are not guaranteed to reverse the decision, but they frequently do. Cigna's medical director may approve the surgery on the call if your surgeon can present the clinical case convincingly. Peer-to-peer calls must usually be requested within a short window — often five to ten business days of the denial — so act quickly.

Step 3 — File Cigna's Internal Appeal

If the peer-to-peer review does not resolve the denial, file a formal internal appeal with Cigna. Federal law gives you at least 180 days from the denial notice to file. For urgent or pre-service appeals, Cigna must respond within 72 hours. For post-service standard appeals, the timeline is 30 to 60 days.

Your internal appeal package should include:

• The denial letter and your EOB
• Your surgeon's letter of medical necessity
• All relevant medical records — office notes, imaging results, test results, prior treatment history
• Clinical guidelines or published studies supporting the procedure
• Any peer-to-peer call notes

Submit everything in writing. Request delivery confirmation.

iro">Step 4 — External Independent Review Organization (IRO)

If Cigna upholds its denial after the internal appeal, you have the right to an external review by an Independent Review Organization. The IRO is a neutral third party not affiliated with Cigna, and its decision is binding on Cigna under federal and most state laws.

For fully insured plans, your state's department of insurance oversees the IRO process. For self-funded employer plans, federal ERISA rules govern external review. In most cases, you have four months from Cigna's final denial to request external review.

External reviews overturn insurance denials at rates exceeding 40 percent nationally for surgical denials. Submit the same complete package to the IRO that you submitted to Cigna.

Step 5 — File a State Insurance Commissioner Complaint

Filing a complaint with your state insurance commissioner serves two purposes: it creates a formal record and it often prompts Cigna to re-examine your case. Commissioners in many states require insurers to respond within 30 days. This step can run parallel to an IRO request — you do not have to wait for one to finish before starting the other.

Fight Back With ClaimBack

Cigna surgical denials are not final. Thousands of patients successfully overturn them every year by following the right process with the right documentation.

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Related Reading

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