GLP-1 Prior Authorization Denied? Here's Exactly What to Do

Prior authorization (PA) denial is the single biggest barrier to brand-name GLP-1 prescriptions. Initial denial rates run 30-60% depending on the insurer. But denial isn't the end — it's the start of a process most patients don't know about.

Step 1: Understand Why You Were Denied

Request the denial letter in writing. Common reasons: medication not on formulary, BMI doesn't meet plan threshold (some require BMI 35+, stricter than FDA), step therapy required (must try cheaper medications first), or missing documentation.

Step 2: Peer-to-Peer Review

Your prescribing physician can request a peer-to-peer review with the insurance company's medical director. This is often the fastest resolution — a doctor-to-doctor conversation where your prescriber advocates for clinical necessity. Success rates for peer-to-peer reviews exceed denial rates.

Step 3: Formal Appeal

If peer-to-peer fails, file a formal appeal. Include your complete medical history documenting obesity-related comorbidities, prior weight-loss attempts (diet, exercise, other medications), your prescriber's letter of medical necessity, and relevant clinical trial data supporting GLP-1 treatment.

Step 4: External Review

If the internal appeal fails, you have the right to an independent external review. An outside physician reviews your case. External reviews overturn denials in a significant percentage of cases.

The Alternative: Skip Insurance Entirely

For many patients, the fastest path to treatment is bypassing insurance and using a compounded GLP-1 through telehealth. No prior authorization, no step therapy, no appeals. Monthly costs start under $100.