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Medicare Part D appeal guide

Medicare Part D Zepbound coverage appeal

Medicare Part D uses specific clinical-policy criteria for Zepbound. Most denials come from undocumented BMI history or missing step-therapy notes. Here is how to address both.

Medicare Part D prior authorization criteria for Zepbound

  • Anti-obesity use EXCLUDED by federal law (Social Security Act §1860D-2(e)(2)(A))
  • Diabetes use COVERED if Ozempic/Mounjaro/Rybelsus prescribed for T2D
  • Cardiovascular risk reduction with semaglutide (Wegovy, FDA-approved Mar 2024 for CV indication) is increasingly covered
Medicare Part D Zepbound policy bulletin

Step-by-step appeal flow

  1. 1

    Pull your carrier policy bulletin

    Medicare Part D publishes its Zepbound coverage criteria. Read it first — every successful appeal cites it back to the reviewer.

  2. 2

    Document your medical necessity

    Anti-obesity use EXCLUDED by federal law (Social Security Act §1860D-2(e)(2)(A)) Diabetes use COVERED if Ozempic/Mounjaro/Rybelsus prescribed for T2D Cardiovascular risk reduction with semaglutide (Wegovy, FDA-approved Mar 2024 for CV indication) is increasingly covered

  3. 3

    Have your prescriber submit the PA

    Most Medicare Part D PAs go through CoverMyMeds or the carrier portal. Your prescriber attaches BMI history, comorbidities (with ICD-10 codes), lifestyle program participation, and prior weight-loss attempts.

  4. 4

    If denied — file the appeal within 60 days

    For Wegovy/Zepbound (weight-only): cannot appeal — federal law excludes. For Wegovy CV-risk indication: appeal citing FDA-approved cardiovascular indication + patient meets SELECT criteria.

  5. 5

    Submit external review if internal appeals fail

    After two internal appeals, you can request external review through your state insurance commissioner. ERISA plans go through the federal external-review process.

Letter template

Customizable Medicare Part D appeal letter

We provide a generic medical-necessity letter generator. Customize with the Medicare Part D-specific framing above for highest first-pass success.

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People also ask

Common questions readers ask

Does insurance cover Zepbound?
Most commercial insurance plans cover Zepbound with prior authorization for adults with BMI ≥30 (or ≥27 + a weight-related comorbidity). Medicare Part D excludes anti-obesity drugs by federal law, so Medicare patients pay cash unless they qualify for Lilly Cares.
Full evidence-graded answer
Can I still get compounded GLP-1 in 2026?
For semaglutide: no — FDA declared the shortage resolved February 21, 2025 and 503A compounding is no longer broadly permitted. For tirzepatide: shortage resolved October 2024 (re-affirmed December 2024), with a wind-down enforcement window that ended in 2025. Some clinics still market "compounded" formulations with added ingredients (B12, glycine) as personalized prescriptions; the legal status is contested.
Full evidence-graded answer
Can I switch from Wegovy to Zepbound?
Yes, and many patients do — SURMOUNT-5 (NEJM 2025) showed tirzepatide produced 20% mean weight loss vs 14% for semaglutide. Switching is usually done with a 1-week washout, starting Zepbound at 2.5 mg regardless of prior Wegovy dose.
Full evidence-graded answer
How do I get prior authorization for Wegovy or Zepbound approved?
Approval rates vary by insurer from 30-70%. The highest-yield steps: documented BMI ≥30 (or ≥27 with a comorbidity), at least one documented diet/exercise attempt, baseline labs (A1c, lipids), prescriber notes citing FDA indication, and same-day appeal of denials with the carrier-specific reason. See /insurance-appeal/[carrier]/[drug] for templates.
Full evidence-graded answer

Editorial information based on published Medicare Part D coverage policies as of 2026. Your specific plan benefits may differ — confirm with your insurance card’s member services number. Not legal advice.