Question 1

Is Dexcom Stelo officially HSA and FSA eligible?

Accepted Answer

Yes, Dexcom states that Stelo is marketed as HSA and FSA eligible. This means the product itself qualifies as a medical expense under IRS rules. You can use your HSA or FSA debit card to buy it directly from Dexcom or other retailers, or you can pay out-of-pocket and submit for reimbursement from your account. However, final approval always depends on your specific plan administrator's rules and the documentation you provide.

Question 2

Do I need a prescription to use HSA/FSA funds for Dexcom Stelo?

Accepted Answer

No, you typically do not need a prescription. Stelo is an over-the-counter (OTC) product, which is a major shift from prescription-only CGMs. However, some FSA or HSA administrators might still request a Letter of Medical Necessity (LMN) from your doctor for reimbursement, especially for larger claims. Always check your plan's specific requirements before purchasing to ensure you can get reimbursed.

Question 3

How much does Dexcom Stelo cost and how does it fit into my HSA/FSA budget?

Accepted Answer

The reported price is $99 for a 2-sensor pack lasting up to 30 days. A subscription plan costs about $89 per month. Over a full year, a subscription totals roughly $1,068. This represents about 31% of the 2026 health FSA limit of $3,400. For an HSA, the cost would use a portion of your annual contribution limit, which is $4,300 for self-only HDHP coverage or $8,550 for family coverage in 2026.

Question 4

Will my health insurance cover Dexcom Stelo?

Accepted Answer

Stelo is generally not covered by traditional health insurance plans. Its OTC status means it is designed for direct consumer purchase. This is a key difference from FSA/HSA eligibility. Your HSA or FSA are your personal tax-advantaged accounts, so you decide how to spend the funds on eligible items like Stelo, regardless of what your insurance plan covers.

Question 5

What documentation do I need for HSA/FSA reimbursement for Stelo?

Accepted Answer

You will need a detailed receipt showing the date of purchase, merchant name (e.g., Dexcom), a clear description of the item (Dexcom Stelo Glucose Biosensor), and the amount paid. Save this receipt digitally and in print. As noted, some administrators may also ask for a Letter of Medical Necessity. It is best to contact your plan administrator before buying to confirm their exact documentation rules for OTC medical devices.

Question 6

Who is Dexcom Stelo designed for?

Accepted Answer

Dexcom states Stelo is for adults aged 18 and older who do not use insulin. It is specifically not intended for individuals with problematic hypoglycemia (low blood sugar that requires assistance). It is marketed for general glucose awareness for people not managing diabetes with insulin, which is important context for justifying the expense as a qualified medical cost.

Question 7

Can I use my FSA carryover funds to buy Dexcom Stelo?

Accepted Answer

Yes, if your employer's FSA plan allows carryover. In 2026, plans can permit up to $680 to roll over into the next year. You can use these carried-over funds for any eligible expense, including Stelo, as long as the purchase occurs during the new plan year. Check your plan details to confirm your carryover amount and rules.

Question 8

What makes a product like Dexcom Stelo HSA/FSA eligible?

Accepted Answer

The IRS defines eligible medical expenses under Publication 502. Generally, costs for diagnosing, treating, or preventing a disease qualify. Dexcom Stelo, as a glucose biosensor for monitoring a body function, falls under this category. Manufacturers like Dexcom obtain eligibility determinations, but the IRS has the final say.

Question 9

Is there a difference between FSA and HSA eligibility for Stelo?

Accepted Answer

No, the underlying list of qualified medical expenses is generally the same for both FSAs and HSAs. Both accounts follow IRS rules. The practical difference is in how you access funds and plan-specific rules set by your FSA administrator versus your HSA trustee.

Question 10

Could using my HSA for Stelo trigger an IRS audit?

Accepted Answer

Using HSA funds for any ineligible expense can trigger penalties and audit risk. However, since Dexcom markets Stelo as eligible and it monitors a health condition, using funds for it is likely compliant. The real risk is poor documentation. Keep your detailed receipt and any LMN on file for at least 3 years in case the IRS asks for proof.

Question 11

Why is Stelo HSA/FSA eligible if it's over-the-counter?

Accepted Answer

IRS rules changed to permanently include many over-the-counter medical products without a prescription, thanks to the CARES Act. This includes items like menstrual care products, pain relievers, and medical devices like glucose monitors. Stelo benefits from this rule change as an OTC health monitoring device.

Question 12

If my plan denies my Stelo reimbursement, does that mean it's not IRS eligible?

Accepted Answer

Not necessarily. Your employer's FSA plan can be more restrictive than IRS rules. They might exclude all OTC items or require a prescription for all medical devices. A denial means it's not eligible under *your specific plan*, but it may still be IRS-eligible. You can appeal with your administrator using the IRS Publication 502 guidelines.

Question 13

How does the $1,068 annual cost for Stelo compare to HSA contribution limits?

Accepted Answer

For 2026, the HSA contribution limit is $4,300 for self-only HDHP coverage. $1,068 for Stelo uses about 25% of that limit. For family coverage ($8,550 limit), it uses about 12.5%. This leaves significant room for other medical expenses but is a substantial line item to plan for.

Question 14

Can I use my HSA to pay for a Stelo subscription directly?

Accepted Answer

Yes, if the merchant (Dexcom) accepts your HSA debit card for recurring payments. Alternatively, you can pay the monthly subscription with a personal card and reimburse yourself from your HSA each month. The latter method is often simpler for tracking and avoids potential card declines.

Question 15

What happens if I buy Stelo but then don't have enough funds in my FSA?

Accepted Answer

With a healthcare FSA, you typically have access to your full annual election amount at the start of the plan year. If you spend it all early and then leave your job, you may owe the balance back. For an HSA, you can only spend what you have already contributed. Plan your purchases around your account balance.

Question 16

Should I prioritize using my FSA or HSA funds for Stelo?

Accepted Answer

Prioritize your FSA funds first because they are 'use-it-or-lose-it' (with possible carryover). HSA funds are yours forever and can be invested. Using FSA money for predictable expenses like a Stelo subscription protects your HSA balance for future growth or unexpected costs.

Question 17

How does the FSA carryover rule affect buying Stelo?

Accepted Answer

If your FSA allows the 2026 maximum carryover of $680, you could use that entire amount to cover over 7 months of a Stelo subscription at $89/month at the start of your new plan year. This is a smart way to use leftover funds for a planned, ongoing expense.

Question 18

Where can I buy Dexcom Stelo with my HSA/FSA card?

Accepted Answer

You can buy it directly from the Dexcom website, which likely accepts HSA/FSA cards. Some major retailers and pharmacies that sell medical devices may also accept these cards for eligible items. Always confirm at checkout or call the retailer beforehand to avoid card rejection.

Question 19

What specific details must be on my receipt for reimbursement?

Accepted Answer

Your receipt must show: 1) Date of purchase, 2) Seller name and address, 3) A clear description like 'Dexcom Stelo Continuous Glucose Monitoring System - 2 Sensors', 4) The item price and total amount paid, and 5) Payment method. A generic receipt saying 'medical supplies' may be rejected.

Question 20

How long does FSA/HSA reimbursement typically take?

Accepted Answer

Reimbursement times vary by administrator. For online submissions with proper documentation, it can take 3 to 10 business days for funds to be deposited into your bank account. Submitting immediately after purchase and ensuring your receipt is legible speeds up the process.

Question 21

What is a Letter of Medical Necessity and do I need one?

Accepted Answer

A Letter of Medical Necessity (LMN) is a statement from your doctor explaining that the item is needed to diagnose or treat a medical condition. While Stelo is OTC, some cautious plan administrators require it. The letter should state the patient's name, diagnosis (e.g., 'monitoring for prediabetes'), and why Stelo is needed.

Question 22

Can I be reimbursed for Stelo if I bought it before opening my HSA?

Accepted Answer

No. HSA reimbursements are only for qualified medical expenses incurred *after* your HSA was established. If you opened your HSA on January 15, 2026, you cannot get reimbursed for a Stelo purchased on January 10. FSAs typically cover expenses incurred during the plan year, regardless of when you enroll.

dexcom stelo fsa hsa eligibility: Your Questions Answered

Eligibility and IRS Rules

Costs, Budgeting, and Contribution Limits

Purchase and Reimbursement Process

Summary

Pro Tips

Quick Answers