Is Acetazolamide (Diamox) Altitude Sickness Tablets HSA or FSA Eligible?

Prescription medications for altitude sickness are qualified medical expenses under IRS Publication 502. A prescription from a licensed physician is required.

The full list of qualified medical expenses is defined in IRS Publication 502, updated annually. The CARES Act of 2020 expanded eligibility to include all OTC medicines and menstrual care products.

1. Schedule an appointment with your doctor and discuss the medical condition you need to manage.
2. Request a Letter of Medical Necessity (LMN) citing Acetazolamide (Diamox) Altitude Sickness Tablets by name.
3. Purchase the product with your HSA/FSA debit card, or pay out of pocket.
4. Submit your receipt + LMN through your plan administrator's portal.
5. Save the documentation for at least 7 years for IRS records.