Guides · Aetna · Medical necessity
How to Appeal an Aetna Medical Necessity Denial
Step-by-step overview of preparing an internal appeal when Aetna denies for medical necessity.
Free sample appeal paragraph
I am writing to request an internal appeal of the decision dated [date] denying coverage for [service] (claim [number]). The denial cited medical necessity. My physician, [name], has determined this service is medically necessary because [clinical reason], as documented in the enclosed records. I request that you reconsider and approve coverage, and that you send me the clinical criteria used in this decision.
Replace the [brackets] with your details. This is a starting point, not legal advice.
What to do
- Read the denial letter for deadlines, codes and the appeal address.
- Request the claim file and the clinical criteria used.
- Ask your clinician for a letter of medical necessity.
- File a timely internal appeal and keep proof of submission.
- If denied again and eligible, consider independent external review.
Check your denial free
Enter your denial details for a free analysis of the likely denial type, appeal options and grounds. If you want, get a full tailored appeal letter PDF with checklist and deadlines for $4.99.
Start the free checkFrequently asked questions
How do I appeal a medical necessity denial from Aetna?
Start with the instructions and deadline on your denial letter. Gather your medical records and a letter of medical necessity, respond directly to the stated denial reason, and file an internal appeal. Keep proof of submission.
Is external review available?
For many non-grandfathered plans, independent external review may be available for denials involving medical judgment after a final internal denial, generally within 4 months. Confirm on your denial notice.
Related guides
- Appeal a UnitedHealthcare Prior Authorization Denial
- Appeal a Cigna Experimental or Investigational Denial
- Appeal a Blue Cross Out-of-Network Denial
- Appeal a Humana Formulary or Pharmacy Denial
- Appeal a Kaiser Referral or Authorization Denial
- Aetna Appeal Letter: How to Write One (Free Sample)
- All appeal guides
Document preparation / educational use only. This site is not a law firm, regulator, airline, insurer, or parking operator. Nothing here is legal advice. Outcomes are never guaranteed. Review every letter carefully before sending and consult a licensed professional if you need advice about your situation.