Letter of Medical Necessity for WEX
WEX’s own guidance is blunt: a gym membership is eligible "only if prescribed for a medical reason" — and the Letter of Medical Necessity is the document that records that prescription. Without it, WEX-administered plans deny gym claims as general wellness.
What WEX requires
- The specific diagnosed condition, in writing
- The prescribed expense (the membership or program), named
- How the expense treats the condition, and for how long
- The provider’s signature and license details
The steps, in order
- Get the letter first
- Pay the gym out of pocket and keep itemized receipts
- Submit the claim through your WEX benefits portal with letter + receipt
- Renew the letter annually while you keep claiming
Source: WEX: What is a Letter of Medical Necessity?. Policies change and employer plan designs vary — your administrator makes the final reimbursement decision. This page is general information, not tax or medical advice.
A board-certified physician reviews your health profile and, when clinically appropriate, issues a signed Letter of Medical Necessity the same day — with the diagnosis, ICD-10 code, duration, NPI and license your administratorlooks for. $69, full refund if a letter isn’t issued. The eligibility check is free.
Check if I qualify →Common questions
WEX administers plans that employers design, and an employer can exclude gym reimbursement entirely. If your claim is denied despite a complete letter, ask whether the plan document excludes fitness expenses.
Vagueness. "Exercise is beneficial" fails; a named diagnosis, the named expense, a duration, and a real signature is the standard their reviewers look for.
Yes — every MedSlip letter carries the physician’s NPI, state license, and a QR verification code your administrator can check at medslip.co/verify.