A water filter only becomes HSA/FSA eligible with a Letter of Medical Necessity — and getting one used to mean a doctor's visit. Services like TrueMed streamline that step. Here is how the model works and how SpringWell's checkout uses it.
What they do
LMN services connect you to a licensed provider who can issue the Letter of Medical Necessity. SpringWell's checkout uses TrueMed to handle this at the point of purchase — no separate appointment.
As we cover throughout this site, a water filter is not automatically eligible — it needs a Letter of Medical Necessity from a licensed provider tying it to a health condition. Traditionally that meant scheduling an appointment and explaining the request. LMN services exist to make that step fast and online.
You answer questions about your health and water concerns.
If appropriate, they issue a Letter of Medical Necessity for the filter.
You use your HSA/FSA card or get reimbursed, with the letter on file.
The provider's independent judgment is central — the letter is issued only if your situation supports it. See how TrueMed works for water filters for the detailed walkthrough.
SpringWell integrates TrueMed directly into its checkout for eligible systems, so the survey-and-letter step happens as part of buying — you do not have to arrange anything separately. That convenience is a big part of why SpringWell is straightforward to buy with HSA/FSA dollars.
Several services in the market follow this same broad model of connecting customers to licensed providers for medical-necessity documentation. What matters for you is the substance, not the brand name: a real licensed provider must make the determination, the letter must reflect a genuine medical need, and you keep the documentation. Always be truthful in the survey — the letter is only valid if the need is real, which also protects you if a claim is ever reviewed.
The Letter of Medical Necessity is handled at purchase — no separate appointment to arrange.
See how it works → Shop eligible systems →LMN services like TrueMed do not change the rules — they make the required step convenient. The filter still needs a genuine, provider-issued Letter of Medical Necessity; the service just brings that to your checkout. This page is educational, not medical or tax advice.
It connects you to a licensed provider who can issue a Letter of Medical Necessity online, so an eligible product can be bought with HSA/FSA funds without a separate appointment.
You complete a health survey at checkout, a licensed provider reviews it and issues the Letter of Medical Necessity if appropriate, and you pay with your HSA/FSA.
No. A licensed provider must determine that your situation supports the letter. Be truthful in the survey; the letter is only valid if the medical need is genuine.
