Why Cigna Denies Prior Authorization (And How to Win)

Cigna has faced multiple state investigations and a high-profile lawsuit for using automated systems to deny prior authorization requests in bulk — sometimes in as little as 1.2 seconds per case. If Cigna denied your prior auth, understanding how they make these decisions is the first step to reversing one.

How Cigna's Prior Authorization Process Works

Cigna uses a proprietary system called PXDX (Procedure to Diagnosis) that automatically cross-references your diagnosis code against approved treatment pathways. If your procedure doesn't match their internal criteria exactly, the system flags it for denial — often without a physician ever reviewing your records.

In 2023, a ProPublica investigation found that Cigna doctors were approving denials at a rate of hundreds per hour. This means your case may never have received meaningful human review.

The Most Common Cigna Prior Auth Denial Reasons

• Not medically necessary — the most common and most contestable reason
• Step therapy required — Cigna requires you to try cheaper treatments first
• Experimental or investigational — applied even to treatments with strong clinical support
• Duplicate service — incorrectly flagged as a procedure you've already received
• Frequency limitation exceeded — you've had the procedure "too recently" per their internal policy

What Makes a Cigna Appeal Win

Cigna's internal appeals are reviewed by a physician — often for the first time. This is your opportunity. A successful appeal against Cigna almost always includes:

• A direct rebuttal of Cigna's specific denial language (copy their exact wording from the denial letter)
• References to Cigna's own clinical coverage policies — these are public and often contain exceptions that apply to your case
• Peer-reviewed literature supporting medical necessity (journals like JAMA, NEJM, or relevant specialty guidelines)
• A letter from your treating physician explaining why alternatives are contraindicated
• Documentation of any prior treatments tried (especially if Cigna cited step therapy)

The Step Therapy Trap — and How to Escape It

If Cigna denied your request because you haven't tried a cheaper drug or treatment first ("step therapy"), you can often bypass this requirement by documenting:

• That you've already tried the required prior therapy (even if not with Cigna)
• That the required therapy is contraindicated given your specific condition or other medications
• That your condition is severe enough that delayed treatment would cause harm

Many states have passed step therapy exception laws. If you're in a state-regulated plan (not an ERISA employer plan), your state's law may require Cigna to grant an exception.

Request the Specific Criteria They Used

Under federal law, you have the right to request the specific clinical criteria Cigna used to deny your claim. Send a written request asking for:

• The InterQual or MCG criteria applied to your case
• The name and specialty of the reviewing physician
• Any internal coverage bulletins or policies cited

Once you have the criteria, you can argue point-by-point why your case meets them.

If the Internal Appeal Fails

Request an external independent review immediately. Cigna's external review overturn rate is significantly higher than their internal overturn rate. An independent reviewer who actually reads your records is far more likely to rule in your favor than Cigna's own process.