What Your FSA or HSA Actually Covers for Sleep and Wake-Up Gear

An FSA or HSA reimburses “medical care” under IRS Publication 502: something paid to diagnose, treat, or mitigate a specific condition, not something that just happens to make you feel better rested. That distinction sorts sleep and wake-up products into three real categories, and most of the marketing around them ignores which category they’re actually in.

Automatically eligible, no paperwork

• CPAP machines, masks, and replacement supplies. A prescribed treatment for a diagnosed condition is the textbook case of medical care. Filters, tubing, and mask cushions all qualify as ongoing supplies for an already-approved device.
• Diagnostic sleep studies. Both in-lab polysomnography and home sleep apnea tests are medical procedures ordered by a provider, reimbursable the same way any other diagnostic test would be.
• Prescription oral appliances for sleep apnea. A dentist-fitted mandibular advancement device, prescribed as a CPAP alternative for mild to moderate apnea, is treated the same as any other prescribed device: automatically eligible, no separate note required beyond the prescription itself.
• Prescription sleep medication, and OTC sleep aids with a Drug Facts label. Since the CARES Act restored over-the-counter drug eligibility in 2020, an OTC sleep aid sold as a labeled drug (not a supplement) no longer needs a prescription to qualify.

Eligible, but only with a Letter of Medical Necessity

• Light therapy lamps. Useful for seasonal affective disorder and some circadian-rhythm issues, but also marketed to anyone who wants a brighter desk. The IRS treats it as dual-purpose, so a provider’s note tying it to a diagnosed condition is what gets it reimbursed.
• White noise and sound machines. Same logic: sometimes used to treat diagnosed sleep-onset insomnia or tinnitus-related sleep disruption, but also just a nice-to-have for anyone who dislikes a quiet room. No diagnosis attached, no reimbursement.
• Weighted blankets. Increasingly prescribed for anxiety and sensory-processing conditions, and a growing number of insurers accept a Letter of Medical Necessity for them. Bought off a shelf with no diagnosis behind it, they’re a comfort item in the IRS’s eyes.
• Melatonin, when it’s labeled as a supplement. This is the split most people get wrong, and most FSA administrators’ own help pages don’t explain it well. Melatonin packaged with an FDA Drug Facts label is an eligible OTC drug outright, no note needed; melatonin packaged as a dietary supplement, which describes most of what’s actually stocked at a typical pharmacy, needs the same Letter of Medical Necessity as the items above. Two bottles that look nearly identical on a shelf can land in opposite columns depending entirely on which regulatory label the manufacturer chose to print.

Not eligible, full stop

• Mattresses and pillows, even the ones marketed with a sleep-quality pitch, are general comfort purchases with no path to a Letter of Medical Necessity in ordinary use.
• Smartwatches and sleep-tracking wearables. Apple states directly that Apple Watch isn’t FSA or HSA eligible, health features included, because the device serves too many general, non-medical purposes at once. The same reasoning applies to most competitors’ trackers, whatever their marketing implies about “medical-grade” sensors.
• Blue-light-blocking glasses. The IRS treats them as general-use eyewear rather than a treatment for a diagnosed condition, which lines up with how thin the actual trial evidence for blue-light glasses turns out to be once you look past the marketing copy.
• Alarm clocks and wake-up or accountability apps, DontSnooze included. None of these treat a diagnosed medical condition, so none clear the bar, and it would be a stretch to argue otherwise just because better mornings feel like a health outcome. If you’re weighing whether a subscription like that is worth paying for out of pocket instead, the actual cost comparison against other accountability setups is a more useful place to start than checking an FSA eligibility list that was never going to include it.

The test worth applying to anything not listed here

Ask whether a provider could write a Letter of Medical Necessity naming a diagnosed condition the item treats. If yes, it’s probably a dual-purpose item eligible with paperwork. If a provider would have nothing to write, because the product’s whole pitch is general wellness rather than treating a named condition, it isn’t going to clear FSA or HSA rules no matter how it’s marketed. The business-expense test a freelancer would apply to the same subscription instead asks a completely different question, and lands on a different answer for some of the same products.

This is a general map, not tax advice for any one plan; FSA and HSA administrators vary in how strictly they enforce the Letter of Medical Necessity requirement, and a plan’s own documentation is the final word over anything summarized here.

FAQ

Is melatonin FSA or HSA eligible? Depends on the label: an FDA Drug Facts label makes it an eligible OTC drug outright, while a dietary-supplement label means it needs a Letter of Medical Necessity instead.

Do I need a prescription to buy over-the-counter sleep aids with FSA or HSA funds? No, not since the CARES Act restored OTC drug eligibility without a prescription in 2020. The item still has to qualify as medical care under IRS rules, which most labeled OTC sleep aids do.

Are smartwatches or sleep trackers FSA or HSA eligible? Generally no. The IRS treats them as dual-purpose, general-health items, and Apple explicitly states its watches aren’t FSA or HSA eligible even with health-tracking features built in.

What is a Letter of Medical Necessity, and when do I need one? A note from a licensed provider naming a diagnosed condition an item treats. Dual-purpose items — useful for general wellness but not obviously medical, like a light lamp or a weighted blanket — need one for reimbursement.