Biohacking with Your HSA: What's Eligible (and What Needs Paperwork)

I’ll be honest: I spent a solid year buying things I thought were health investments — an Oura Ring, magnesium supplements, a CGM trial — without ever asking whether any of it could go through my HSA. Turns out a meaningful chunk could have, with the right paperwork. Here’s what actually works and what doesn’t.

The fast answer

A surprising amount of biohacker gear is HSA-eligible — but most of it needs an LMN tied to a specific diagnosed condition. CGMs, wearables, recovery tools, certain supplements, specialty blood work. The line is medical necessity. The IRS under Publication 502 only covers expenses for the diagnosis, cure, mitigation, treatment, or prevention of disease. “Optimizing” alone won’t fly.

TL;DR: Biohacking with your HSA works for items that map to real conditions. “Longevity” alone won’t fly.

“Continuous glucose monitoring has expanded beyond diabetes management — growing evidence supports its use in identifying early metabolic dysfunction, including insulin resistance and pre-diabetes, before clinical thresholds are reached.” — Journal of Clinical Endocrinology & Metabolism, 2024.

Caeli Spectrum

🟢 Auto-eligible (no LMN needed)

FDA-cleared CGMs for diagnosed diabetes, blood pressure monitors, pulse oximeters, routine annual blood work

🟡 LMN unlocks these

Off-label CGMs (Stelo, Lingo) for insulin resistance, smart wearables (Oura, Whoop, Apple Watch), Theragun, specialty lab panels, infrared saunas — with a specific documented condition

⚫ Won’t qualify

NMN/NR/NAD+ supplements, cryotherapy spas, red light therapy without a diagnosed skin condition, biohacker memberships, longevity retreats

TL;DR: Mappable to a condition? LMN works. “Optimizing” alone? Skip.

If you want to understand your blood sugar

Diabetes diagnosis: auto-eligible, no LMN. Pre-diabetes or insulin resistance concern: LMN-eligible, and increasingly common as a documented metabolic condition. The clinician needs to specify the concern — “curiosity about my glucose” doesn’t fly, but “insulin resistance risk with fasting glucose trending above normal” does.

Stelo CGM by Dexcom — $99/cycle

The first OTC CGM cleared by the FDA — no prescription needed to buy it, but you still need an LMN to run it through your HSA. Wears for 15 days, syncs to your phone, shows how food and exercise affect your glucose in real time. If you’ve ever wanted to know why a specific meal wipes you out or spikes your energy, this is it. LMN-eligible with a documented metabolic concern.

Abbott Lingo CGM — $179/cycle

Abbott’s consumer CGM. The app is a bit more detailed than Stelo’s in how it explains your patterns. Same LMN rules apply. If your doctor has flagged pre-diabetes or you have a family history of type 2, that’s the LMN basis.

TL;DR: Diabetes = auto. Pre-diabetes or insulin resistance + LMN = covered. Curiosity alone = no.

If you want to track sleep, heart, or recovery

Sleep disorder, anxiety, atrial fibrillation, or cardiovascular condition + LMN = wearable covered. The specific diagnosis determines which device makes the strongest case. Full picks and diagnosis map in the smart wearables guide — short version below.

Oura Ring 4 — $349 • Best for: sleep, anxiety, cycle tracking

Apple Watch Series 10 — $399+ • Best for: afib, cardiovascular monitoring

TL;DR: Sleep disorder, anxiety, afib, or cardio condition + LMN = wearable covered. “I want to track my recovery” = no.

If you want recovery tools

Theragun Prime+ — $300 • LMN for chronic pain or fibromyalgia

Well-established LMN category. Most straightforward recovery tool to get covered — if you have documented chronic pain or post-injury history, this is a routine approval.

Normatec 3 Compression Boots — $800 • LMN for circulation or post-surgical recovery

Saunas and cold plunges are stricter — expect more administrator pushback, need a very specific diagnosis. Full breakdown in the recovery tools guide.

TL;DR: Theragun common. Sauna/cold plunge much stricter. Real diagnosis required in both cases.

If you want supplements

Specific supplements for documented deficiencies = LMN-eligible. Vitamin D for diagnosed deficiency, magnesium for documented sleep disorder or RLS, omega-3s for cardiovascular condition. NMN, NR, NAD+ for “longevity”: no — the IRS treats them as general wellness. Full supplement breakdown in the vitamins guide.

TL;DR: Vitamin D for deficiency yes. Magnesium for sleep disorder yes. NMN for “living to 120” no.

If you want specialty blood work

InsideTracker — from $199

Comprehensive biomarker panel — hormones, metabolic markers, cardiovascular risk, inflammation. LMN-eligible when tied to a specific concern like cardiovascular risk factors or hormone imbalance. “I want to optimize my biomarkers” doesn’t qualify; “I have a family history of cardiovascular disease and want a detailed lipid panel” does.

Function Health — $499/year

100+ biomarkers twice a year, reviewed by physicians. Same LMN rules — the clinical justification is what makes this HSA-eligible, not the curiosity. If your doctor has flagged risk factors worth monitoring closely, this is the panel worth submitting.

TL;DR: Specialty labs LMN-eligible with a real medical concern. Curiosity-driven testing isn’t.

Caeli Pro-Tip: Caeli’s integrated telehealth knows which biohacker categories pass administrator review and which don’t — and will tell you before you pay for a consultation. Install Caeli and let real expertise tell you what’s actually covered.

Frequently asked questions

Is the Stelo or Lingo CGM HSA-eligible without a diabetes diagnosis?

Yes — with an LMN tied to insulin resistance, pre-diabetes, or a documented metabolic concern. If your fasting glucose, A1C, or fasting insulin shows pre-diabetic markers, a telehealth clinician can issue the LMN.

Can I use my HSA to buy NAD+ or NMN supplements?

Generally no. NAD+/NMN are marketed for “longevity,” which the IRS treats as general wellness, not medical necessity. No specific diagnosed condition currently maps cleanly to NMN in a way administrators accept.

Does my HSA cover an InsideTracker blood test?

With an LMN tied to a specific concern — cardiovascular risk factors, hormone imbalance, etc. — yes. Pure “optimization” testing without a clinical justification: no.

Is an infrared sauna LMN-eligible in 2026?

Sometimes — with a documented circulation, skin (psoriasis, eczema), or chronic pain condition. Plan administrators are stricter on saunas than on Theraguns. Have a defensible LMN from a specialist ready.

Can I expense my Oura Ring subscription with my HSA?

The ring itself is HSA-eligible with an LMN. The subscription is plan-dependent — some administrators treat it as part of the device’s value; others classify it as a separate service. Try, document, and appeal if rejected.

Bottom line

Biohacking with your HSA works — if the items map to real conditions. CGMs for metabolic concerns, wearables for sleep and cardio, recovery tools for documented pain, specific supplements for documented deficiencies. Anything sold as “longevity” without a condition tied to it generally won’t pass review.

Install Caeli — telehealth knows what categories work and flags the ones that don’t before you waste money on a rejected claim.

TL;DR: Map your biohacker stack to real diagnoses. Skip anything labeled “longevity” without a clinical hook.