This is the category where the answer is no, the answer stays no, and the reason is worth understanding because it is the reason the IRS issued a consumer alert about this whole area in the first place.
Pub. 502: diet food and beverages are excluded because they substitute for what is normally consumed to satisfy nutritional needs. The FAQ allows only the excess cost of a special food that doesn’t meet normal nutritional needs, treats an illness, and is substantiated by a physician. No letter converts an ordinary grocery run.
IRS FAQ: yes, but only if the counseling treats a specific disease diagnosed by a physician — obesity and diabetes are the IRS’s own examples. General wellness coaching is out.
Classification is at the expense-category level, comes from this project's HSA reference data, and is not a Magellan determination about any individual product. Your plan administrator decides what your plan reimburses.
Pub. 502 excludes diet food and beverages because they substitute for what is normally consumed to satisfy nutritional needs. That clause is the whole ballgame. It is not saying the food is unhealthy or that the claim is unproven — it is saying that you would have eaten something anyway, so the expense is not additional and not medical. The IRS FAQ allows only the excess cost of a special food that does not meet normal nutritional needs, treats an illness, and is substantiated by a physician. An ordinary grocery run has no excess cost to allocate.
Protein powder is the case people argue about, and it is the clean illustration: it substitutes for protein you would otherwise eat. No letter converts it, because a letter documents medical necessity where the rules leave room — and here the rules leave none.
The IRS FAQ says yes to nutritional counselling if it treats a specific disease diagnosed by a physician, and offers obesity and diabetes as its own examples. General wellness coaching, longevity coaching, and "optimisation" programmes are outside it. The distinction is not the credential of the person coaching you; it is whether there is a diagnosis being treated.
Magellan publishes recipes and food tools — the recipe index, magnesium-dense snacks, nitrate-rich bowls — because food is where most of the useful nutrition happens. None of it is a reimbursable expense, and saying otherwise would be exactly the behaviour the IRS warned about in IR-2024-65 when it flagged companies misrepresenting nutrition and general-health expenses as medical care.
A letter cannot make an ineligible expense eligible. This category is the reference data's own example of that limit: protein powder stays out no matter who signs what.
Whatever the category, three limits hold on every letter:
What the IRS documents say, what custodians actually do, and the three questions hiding inside "is it eligible?"
All fifteen expense categories scored against the three tests, with the citation behind each one.
A dated, printable spend-down plan — and the trap the internet tells you to walk into every December.
Twenty-two questions with the citation attached to each answer.
What one is, the six fields administrators look for, and the three things a letter cannot do.
Log purchases in the Magellan HSA / FSA ledger →