Quick answer: A first denial is not the end. Insurers must tell you in writing why a claim was denied and how to appeal, and cranial prosthesis denials are sometimes reversed when the appeal fixes the original problem — usually terminology ("wig" instead of "cranial prosthesis"), missing documentation, or a weak medical-necessity explanation. Read the denial reason, fix precisely that, and resubmit within your plan's appeal window.
Step 1: Read the denial letter carefully
The letter (or Explanation of Benefits) states the reason — common ones include "cosmetic item," "not medically necessary," "missing documentation," or "non-covered benefit." It also states your appeal deadline and process. The reason determines your entire strategy.
Step 2: Match the fix to the reason
"Cosmetic" or wrong terminology: ensure every document says cranial prosthesis — the prescription, the invoice, the claim form. Resubmit with corrected language.
"Not medically necessary": ask your physician for a stronger Letter of Medical Necessity that names the diagnosis and explains the need concretely.
"Missing documentation": supply exactly what's listed — itemized invoice with the A9282 code, prescription, receipts.
"Non-covered benefit": the hardest category — ask whether any exception process exists, and whether your plan documents truly exclude cranial prostheses (sometimes representatives quote the wig exclusion without checking prosthesis language).
Step 3: Write a short appeal letter
One page: your claim number, the denial reason, why the item is a medically necessary cranial prosthesis (not a cosmetic wig), and a list of enclosed documents. Send it with everything — even documents you sent before — by the method your insurer specifies, and keep copies.
Step 4: If the appeal is denied
Most plans offer a second-level appeal, and many states provide external review for fully-insured plans. Your denial letters must explain these rights. Persistence genuinely matters here — a meaningful share of successful reimbursements happen after an initial no.
Reviewed by the ANIOR Medical team · Updated July 2026. General information, not legal or benefits advice; appeal processes vary by plan and state.