An item or service is HSA-eligible if it treats, prevents, or diagnoses a specific medical condition. That’s the core test the IRS uses, and it applies to everything from doctor visits to drugstore purchases. If something is purely for general health, cosmetic improvement, or personal comfort, it doesn’t qualify. The tricky part is that many products fall into a gray area, and the rules changed significantly in 2020 when over-the-counter medications became eligible without a prescription.
The One Question That Determines Eligibility
The IRS defines qualified medical expenses under Section 213(d) of the tax code. In plain terms, an expense qualifies if it’s for the diagnosis, cure, treatment, or prevention of disease, or if it affects a structure or function of the body. That language is broad enough to cover obvious things like prescriptions, lab work, and surgery, but narrow enough to exclude anything done purely for appearance or general wellness.
When you’re standing in a store wondering whether you can use your HSA card, ask yourself: “Is this for a specific medical condition, or is it just to feel better in general?” A heating pad for diagnosed back pain qualifies. A massage chair because you’re stressed after work does not. Sunscreen qualifies because it prevents skin damage. A gym membership to “stay healthy” does not, even though exercise is good for you. The IRS specifically excludes health club dues and amounts paid to improve general health or relieve discomfort not tied to a diagnosed condition.
What Changed With Over-the-Counter Products
Before 2020, you needed a prescription to buy most over-the-counter medications with HSA funds. The CARES Act eliminated that requirement. Cold medicines, antihistamines, antacids, anti-inflammatories like ibuprofen, and other common drugstore medications are now HSA-eligible without a doctor’s note. The same law also added menstrual care products, including tampons, pads, and liners, to the list of qualified expenses.
This was a major shift. You can now walk into a pharmacy, grab allergy medicine or pain relievers, and pay with your HSA debit card. No receipt from a doctor needed. But the change only applies to items that are genuinely medicinal. Toothpaste, toiletries, and personal care products are still excluded unless they’re used primarily to prevent or treat a specific illness or disability.
How Stores Verify Eligibility at Checkout
If you’ve ever swiped your HSA card and had some items approved while others were declined, that’s the work of an industry system called IIAS (Inventory Information Approval System). An organization called SIGIS maintains a master list of eligible products, reviewed monthly by benefit plan administrators and industry experts. Retailers who are certified through this system tag every product in their database as eligible or ineligible, so the register can automatically sort your transaction when you use an HSA or FSA card.
For items on the eligible product list, you don’t need to provide a doctor’s statement or indicate a diagnosis. The system handles it. This is why buying bandages or acetaminophen at a certified retailer works seamlessly with your HSA card, while a bottle of multivitamins gets rejected. SIGIS periodically reclassifies products based on new IRS guidance, so eligibility can shift over time. If an item you bought last year no longer goes through, that may be why.
Items That Seem Eligible but Aren’t
Several categories trip people up because they feel health-related but don’t meet the IRS standard:
- Vitamins and supplements. Daily multivitamins, herbal supplements, and “natural medicines” are not eligible unless a doctor recommends them as treatment for a specific diagnosed condition. Taking vitamin D because you heard it’s good for you doesn’t count. Taking it because your doctor diagnosed a deficiency does.
- Cosmetic procedures. Face lifts, hair transplants, hair removal, and liposuction are explicitly excluded. The procedure must meaningfully promote proper body function or treat illness, not just improve appearance.
- General fitness. Gym memberships, fitness trackers, exercise equipment, and wellness retreats don’t qualify on their own, regardless of how beneficial they are for your health.
- Most insurance premiums. You generally cannot use HSA funds to pay health insurance premiums. The exceptions are narrow: long-term care insurance, COBRA continuation coverage, coverage while receiving unemployment benefits, and Medicare premiums (but not Medigap) if you’re 65 or older.
The Gray Area: When a Doctor’s Note Changes Everything
Many items that are normally ineligible become qualified expenses when a medical professional connects them to a diagnosed condition. This is where a Letter of Medical Necessity (LOMN) comes in. Your doctor fills out a form stating your specific medical condition, the recommended treatment or product, the expected duration of treatment, and a confirmation that the expense is not for general health or cosmetic purposes.
For example, a weight-loss program is typically not HSA-eligible. But if your doctor diagnoses obesity and prescribes a specific program as treatment, it can qualify with proper documentation. The same applies to massage therapy, which is normally considered a personal wellness expense. If a physician prescribes it for a diagnosed musculoskeletal condition, and you have the letter to prove it, it becomes eligible. For chronic conditions like multiple sclerosis, the letter can indicate “lifetime” as the duration of treatment, so you don’t need to renew it annually.
Chiropractic care and acupuncture occupy a similar space. These treatments are generally eligible when they’re for a specific medical condition, but some HSA administrators require documentation confirming that the service wasn’t just for general wellness. If you’re using alternative therapies, check with your benefits administrator about what paperwork they need.
How to Check Before You Buy
For everyday purchases, the fastest method is to look for an “HSA/FSA eligible” label on the product or retailer’s website. Major retailers like Amazon, Target, and CVS now tag eligible items in their online stores, and those tags are based on the same SIGIS list that registers use at checkout.
For services or larger expenses, your HSA administrator’s website typically has a searchable list of qualified medical expenses. HealthEquity, Fidelity, and other major administrators maintain these databases and update them regularly. If you can’t find a clear answer, the most reliable step is to check IRS Publication 502, which lists hundreds of specific expenses and whether they qualify.
For anything in the gray area, get the doctor’s note before you spend the money. It’s much easier to document medical necessity upfront than to argue about it during a tax audit.
What Happens If You Spend on Something Ineligible
Using HSA funds on a non-qualified expense before age 65 triggers a 20 percent penalty on the amount withdrawn, on top of owing regular income tax on that amount. So if you accidentally spend $500 on an ineligible item, you could owe $100 in penalties plus the income tax. That’s a steep price for a mistake that’s easy to avoid.
After age 65, the 20 percent penalty goes away, but you still owe income tax on non-qualified withdrawals. At that point, your HSA essentially functions like a traditional retirement account for non-medical spending, though using it for qualified medical expenses remains completely tax-free at any age.
If you realize you made a non-qualified purchase, some administrators allow you to return the funds to your HSA before the tax filing deadline for that year. Keep your receipts for every HSA purchase. The IRS can request documentation at any time, and “I thought it was eligible” is not a defense that waives the penalty.