Pay with your HSA/FSA card*

StimuSIL has partnered with Flex to allow you to use your Health Savings Account (HSA) or Flexible Spending Account (FSA). This means you can now use your HSA or FSA debit card to buy StimuField cap with pre-tax dollars, resulting in net savings of 30-40%, depending on your tax bracket.

To use your HSA or FSA debit card, add products to your cart as usual. At checkout, select “Flex | Pay with HSA/FSA” as your payment option, enter your HSA or FSA debit card, and complete your checkout as usual. If you don’t see “Flex | Pay with HSA/FSA,” you may be in Shop Pay. Select “checkout as guest” to view more payment options.

If you don’t have your HSA or FSA card handy, still select “Flex | Pay with HSA/FSA” as your payment method. Enter your credit card information and Flex will email you an itemized receipt to submit for reimbursement.

The key here is to make sure you are logged out of ShopPay. One of the easiest ways to do this is to go through checkout in an incognito window.

HSA/FSA cards are debit cards, and the most common reason for declines is insufficient funds. Reach out to your HSA/FSA administrator to confirm your balance.

Please forward us the request from your FSA, and we will work with the Flex team to issue you a new receipt.

Please check your spam folder, as sometimes emails from notifications@withflex.com may be automatically filtered as spam by some email service providers. If you still can't find it, please email support@withflex.com and let them know the email address associated with your order.

No, unfortunately, this isn’t a supported feature right now. If there are insufficient funds in a single HSA or FSA account, you can instead enter a credit card on the Flex checkout page. You will receive an itemized receipt and/or Letter of Medical Necessity from Flex, which you can submit for reimbursement.

Sales tax for eligible items is also covered by HSA/FSA funds. If the customer has a split cart, the tax will be divided among the cards based on the items.

Some products require documentation from a licensed healthcare provider stating that the item is necessary to treat or manage a specific medical condition. If the product requires a Letter of Medical Necessity (LOMN), Flex facilitates a chat-based telehealth consultation that is reviewed by a licensed provider, and typically the Letter is provided within 2 hours.

In order to qualify to use your HSA or FSA card for the StimuField cap, the IRS requires you to have a Letter of Medical Necessity. StimuSIL has partnered with Flex to enable telehealth visits as part of our checkout. A licensed provider will review your consultation, and within 2 hours of your purchase, Flex will email you a Letter of Medical Necessity and an itemized receipt.

You should keep it on file for at least three years in the event of an IRS audit of your HSA or FSA account. Occasionally, FSAs may ask for the Letter to confirm the eligibility of your purchase.

Please email support@withflex.com and they will reach out to their telehealth team to reprocess and send your corrected Letter of Medical Necessity.

Please check your spam folder, as sometimes emails from notifications@withflex.com may be automatically filtered as spam by some email service providers. If you still can’t find it, please email support@withflex.com and let them know the email address associated with your order.

• Complete your health consultation: Complete a brief, 2-minute consultation. A licensed provider will review your responses and determine your eligibility. If eligible, you’ll receive a Letter of Medical Necessity within two hours.
• Make your StimuField purchase: Visit stimufield.com to pay for your StimuField cap with a standard payment method. Do not use your HSA/FSA card at checkout.
• Submit for HSA/FSA reimbursement: Follow Flex’s instructions to submit your Letter and StimuField receipt to your HSA/FSA administrator for reimbursement.

• Locate your HSA/FSA administrator (typically through your employer’s HR department or health insurance provider).
• Log in to your account on the administrator’s online platform.
• Navigate to the “Reimbursement” or “Claims” section.
• Upload your Letter of Medical Necessity and receipts for related purchases made after the letter’s issue date.
• Submit your claim. Processing can take several days to a few weeks.

Reimbursement times vary but can take several weeks. For a specific timeline, contact your HSA or FSA administrator directly.