Experimental Treatment Denial Appeal Letter Template

Letter Template: Experimental Treatment Appeal

[Your Name]
[Your Address]
[City, State ZIP]
[Date]
[Insurance Company Name]
[Appeals Department]
[Address]
Re: Appeal of Denial — Experimental/Investigational
Member Name: [Your Name]
Member ID: [Your ID Number]
Claim/Reference Number: [Number]
Denied Treatment: [Treatment Name]
Dear Appeals Review Committee:
I am writing to formally appeal the denial of [treatment]
dated [denial date], which was classified as "experimental"
or "investigational." I submit evidence demonstrating that
this treatment is supported by substantial clinical evidence
and meets accepted standards of medical practice.
FDA STATUS
[If FDA-approved for any indication: Treatment is
FDA-approved for [indication]. Off-label use for
[your condition] is supported by...]
CLINICAL EVIDENCE
[Peer-reviewed study 1 — citation and key findings]
[Peer-reviewed study 2]
[Clinical practice guidelines recommending this treatment]
[Drug compendia listing, if applicable]
STANDARD OF CARE
[This treatment is recognized as standard of care by:
[Medical specialty organization]
[NCCN guidelines, if cancer-related]
[Other authoritative sources]]
PATIENT-SPECIFIC FACTORS
[Explain why standard treatments are inadequate:
Treatments tried and failed
Contraindications to alternatives
Unique clinical circumstances]
I respectfully request reversal of this denial.

Sincerely,
[Your Name]

Key Strategies

1. Check drug compendia — UpToDate, NCCN, Micromedex, AHFS — listing in a recognized compendium strengthens your case
2. FDA approval matters — even off-label use of FDA-approved drugs is often covered
3. Request external review — external reviewers specialize in the clinical area and may be more knowledgeable
4. State laws — some states prohibit denying treatments that are in clinical guidelines
5. Clinical trials — the ACA requires coverage of routine costs for qualifying clinical trial participants