Statutory & financial benchmarks
| Scenario | Likely status | Documentation usually needed | Why |
|---|---|---|---|
| Energy, beauty or general wellness drip | Generally not eligible | None will cure it | IRS Publication 502 excludes expenses that are merely beneficial to general health |
| Hangover or post-party recovery | Generally not eligible | None will cure it | Not treatment of a diagnosed disease |
| NAD+ longevity or anti-aging | Generally not eligible | LMN rarely changes the outcome | Longevity is not a diagnosed condition; administrators often reject these claims |
| Dehydration from an acute illness, treated on a prescriber’s order | May be eligible | Itemized receipt with diagnosis; LMN often requested | Treatment of a specific medical condition |
| Documented deficiency (B12 deficiency, hypomagnesemia, post-bariatric malabsorption) | May be eligible | LMN with diagnosis, supporting labs, frequency and duration | Nutrients prescribed to treat a diagnosed condition can qualify |
| Diagnosed migraine, treated under a prescriber’s protocol | May be eligible | LMN and itemized receipt | Treatment of a diagnosed disease |
| Corporate wellness day or drip party | Generally not eligible | Not applicable | General health purpose; group setting |
The legal test: what counts as medical care under §213(d)
HSAs, health FSAs and HRAs can reimburse only qualified medical expenses, and the definition comes from Internal Revenue Code §213(d): amounts paid for the diagnosis, cure, mitigation, treatment or prevention of disease, or for the purpose of affecting any structure or function of the body. IRS Publication 502 applies that definition item by item.
The dividing line for IV therapy is purpose. Publication 502 excludes items that are merely beneficial to general health, and it treats vitamins and nutritional supplements as medical expenses only when a medical practitioner recommends them to treat a specific diagnosed condition. A hydration drip after a festival is general health. The same bag ordered by a prescriber to treat dehydration from a documented gastrointestinal illness can be medical care.
The IRS has also published FAQs on nutrition, wellness and general health expenses and, in 2024, warned consumers about companies that claim a note from a doctor can turn ordinary wellness purchases into eligible expenses. A Letter of Medical Necessity documents a real medical purpose; it cannot create one.
HSA vs FSA: who checks the claim
The two accounts behave very differently after the card is swiped, and that difference explains most patient complaints.
| Feature | HSA | Health FSA |
|---|---|---|
| Who substantiates | The account holder keeps records; the custodian does not review each purchase | The plan administrator must substantiate each expense |
| What happens at the swipe | Usually approved at a healthcare merchant | May be approved, then followed by a request for an itemized receipt or LMN |
| Consequence of an ineligible expense | Taxable distribution plus a 20% additional tax if the holder is under 65 (IRC §223) | Card suspended until the participant repays or substitutes another receipt |
| Typical patient complaint | “My accountant says I owe tax on this” | “My FSA says I have to pay this back” |
Either way, the patient carries the consequence, so give them accurate information at booking and an itemized receipt every time. Your liability exposure comes from misleading marketing and documentation, not from the card network.
Card acceptance: MCC codes, SIGIS and IIAS
HSA and FSA debit cards run on the Visa or Mastercard networks with restrictions set by the administrator. The first filter is your merchant category code (MCC), which your acquirer assigns from your business description. You do not choose it, and misdescribing your business to get a medical code breaches network rules.
| MCC | Category | How HSA/FSA cards usually behave |
|---|---|---|
| 8011 | Doctors and physicians (not elsewhere classified) | Healthcare merchant; generally accepted, FSA may request substantiation |
| 8099 | Medical services and health practitioners (not elsewhere classified) | The code many prescriber-led IV practices receive; generally accepted, substantiation requests common |
| 8062 | Hospitals | Healthcare merchant |
| 7298 | Health and beauty spas | Not a medical code; FSA cards are commonly declined |
| 5912 | Drug stores and pharmacies | Uses IIAS item-level approval for retail purchases |
SIGIS, the Special Interest Group for IIAS Standards, maintains the standards and eligible product list behind the Inventory Information Approval System (IIAS). IIAS is how pharmacies and retailers approve eligible items at the product level. A provider-type merchant coded as a medical service generally does not run IIAS; its FSA transactions are approved at the merchant level and then substantiated by the administrator, under the card substantiation framework the IRS set out in Notice 2006-69 and later guidance.
Card networks and some states restrict surcharging. Surcharges are not permitted on debit transactions on the major networks, and HSA and FSA cards are debit or prepaid products, so do not add a card fee to them.
Letters of Medical Necessity that hold up
A Letter of Medical Necessity (LMN) is a statement from a licensed practitioner who evaluated the patient, explaining that a treatment is needed for a specific diagnosed condition. Administrators use it to substantiate expenses that could be either medical or personal. It must reflect a real clinical judgment, not a template sold at checkout.
- Patient identification: name and date of birth.
- Diagnosis: the condition being treated, with its ICD-10-CM code.
- Treatment: the specific therapy (for example, 1,000 mL Lactated Ringer’s with magnesium for documented hypomagnesemia), not “IV therapy.”
- Medical rationale: why IV administration is needed rather than oral, such as malabsorption after bariatric surgery or persistent vomiting.
- Frequency and duration: for example, weekly for six weeks, then reassess.
- Practitioner details: name, credentials, licence number, NPI, signature and date.
Most administrators accept an LMN for up to 12 months or the plan year, and some publish their own form. The practitioner who writes it should be the one who evaluated the patient, typically the prescriber who performed the Good Faith Exam or your medical director. Relevant clinical context lives on drip pages such as bariatric malabsorption and migraine relief.
Superbills: when they apply and what goes on them
A superbill is an itemized statement a self-pay patient can submit to their health insurer for possible out-of-network reimbursement. It is not a claim and it does not obligate the insurer to pay. Most commercial plans deny elective wellness infusions, and many deny infusions in non-facility settings without prior authorization, so set expectations clearly.
| Element | Example | Caution |
|---|---|---|
| Provider identity | Practice name, address, TIN, rendering and organizational NPIs | The rendering provider must be the clinician responsible for the service |
| Place of service | 12 (home) or 11 (office) | Must match where care was given |
| Diagnosis | ICD-10-CM, e.g. E86.0 dehydration, R11.2 nausea with vomiting | Only what the clinician documented |
| Procedures | CPT 96360/96361 (hydration infusion, initial 31–60 min / each added hour), 96365 (therapeutic infusion, initial up to 1 hour), 96374 (IV push) | These describe physician-office and facility services with supervision requirements; payers may not recognize them for a mobile RN visit |
| Drugs and fluids | HCPCS J7030 (normal saline 1,000 mL), J7120 (Ringer’s lactate up to 1,000 mL), J2405 (ondansetron per 1 mg), J1885 (ketorolac per 15 mg), J3475 (magnesium sulfate per 500 mg) | Units must match the dose given |
| Charges and payment | Itemized charges, amount paid, date | Show discounts as given; never inflate charges |
Upcoding hydration to a therapeutic infusion, billing infusion time that was not documented, or attaching a diagnosis the record does not support turns a courtesy document into a false statement to an insurer. Medicare beneficiaries raise separate enrollment and opt-out questions; get billing counsel before issuing superbills to them.
The other GFE: self-pay Good Faith Estimates
Under the No Surprises Act regulations at 45 CFR 149.610, providers must give uninsured and self-pay patients a written Good Faith Estimate of expected charges when a service is scheduled at least three business days in advance, or when the patient asks. Most mobile IV and lounge patients are self-pay, so this applies to you even though it shares an acronym with the Good Faith Exam.
- Timing: within one business day when the service is scheduled three to nine business days out; within three business days when it is scheduled ten or more business days out or when the patient requests an estimate.
- Contents: itemized expected charges, with service and diagnosis codes where applicable, plus the required dispute notice.
- Dispute risk: if the final bill exceeds the estimate by $400 or more, the patient can start the patient-provider dispute resolution process.
Build the estimate into booking, store it with the chart and keep add-on pricing on it. Price your menu and add-ons in the provider calculator, and if you want help setting up compliant payment and documentation workflows, reach us through partner intake.
Step-by-step: accepting HSA/FSA payments correctly
- Describe your business accurately to the acquirerA prescriber-led medical service will usually be coded as a medical merchant; a spa-style business will not, and that is the correct result.
- Test an HSA and an FSA cardRun small test transactions on staff cards to see how your MCC behaves before telling patients you accept them.
- Remove card surcharges on debitDisable surcharging for debit, HSA and FSA cards and check your state’s surcharge rules.
- Rewrite your marketingReplace “HSA/FSA eligible” claims with “HSA/FSA cards accepted; eligibility depends on your plan and medical reason.”
- Issue itemized receipts every timePatient name, date of service, provider, each item and dose, amount paid and, when documented, the diagnosis.
- Set an LMN policyOnly the evaluating prescriber writes LMNs, only for documented conditions, with specific treatment, frequency and duration.
- Decide on superbillsOffer them only when a documented diagnosis supports the service, with codes that match the record and setting.
- Automate self-pay estimatesGenerate a Good Faith Estimate for every scheduled self-pay service and on request, and store it with the chart.
- Train front-desk scriptsStaff answer “can I use my HSA?” with the accurate, patient-specific explanation, never a blanket yes.
- Audit quarterlySample charts with LMNs and superbills and check diagnosis support, coding accuracy and estimate compliance.
Common regulatory audit traps
Blanket “HSA/FSA eligible” marketing
Advertising all drips as eligible misleads patients who later face repayment or tax. Regulators and the IRS have flagged companies that market general wellness as medical care. Describe card acceptance, not eligibility.
LMNs sold at checkout
An LMN generated for a fee with no real evaluation, or for a condition the patient does not have, is a false document. The IRS has warned consumers about exactly this practice. Tie every LMN to a documented exam and diagnosis.
Misdescribed merchant category
Describing a spa business as a physician practice to obtain a medical MCC breaches card network rules and can cost you your merchant account. Let the code follow the real business.
Upcoded superbills
Listing a therapeutic infusion code for a hydration drip, undocumented infusion time or an unsupported diagnosis is a misrepresentation to an insurer. Code only what the record supports.
Missing self-pay Good Faith Estimates
Practices that only know the Good Faith Exam often skip the No Surprises Act estimate entirely. Without it, the patient can dispute any bill that exceeds expectations, and you have no estimate to point to. Generate one at booking.
Run your state’s compliance and margin model
Pick your state, licence, model and volume to see the required entity structure, medical director retainer, GFE and 503B supply costs, and net margin, then get matched with the network.
State rules that matter most here
Frequently asked questions
Can I use my HSA or FSA for IV therapy?
Sometimes. IV therapy qualifies only when it treats or prevents a specific medical condition, such as dehydration from an acute illness or a documented deficiency, usually supported by a prescriber’s order and often a Letter of Medical Necessity. General wellness, beauty, hangover and longevity drips generally do not qualify.
Why did my FSA card work but then my FSA asked for documentation?
Healthcare merchants can be approved at the swipe, but FSA administrators must still substantiate each expense. If they request an itemized receipt or LMN and you cannot provide one that shows a medical purpose, you may have to repay the amount.
What should a Letter of Medical Necessity for IV therapy include?
The patient’s name and date of birth, the diagnosis with an ICD-10 code, the specific treatment, why IV delivery is needed, frequency and duration, and the practitioner’s name, credentials, licence, NPI, signature and date. It must come from a practitioner who actually evaluated the patient.
Will insurance reimburse a superbill for an IV drip?
Rarely for elective or wellness drips. Insurers may consider reimbursement when a covered diagnosis is documented and the plan has out-of-network benefits, but many deny infusions in home or non-facility settings. Treat a superbill as a possibility, not a promise.
What is the difference between a Good Faith Exam and a Good Faith Estimate?
A Good Faith Exam is the prescriber’s clinical evaluation before treatment. A Good Faith Estimate is the written estimate of expected charges that the No Surprises Act requires for uninsured and self-pay patients. Mobile IV practices usually need both.
Can I charge a card fee to patients paying with HSA or FSA cards?
You should not. HSA and FSA cards are debit or prepaid products, and the major card networks do not permit surcharges on debit transactions. Some states restrict surcharging further.
Sources & standards reviewed
- Publication 502, Medical and Dental Expenses Internal Revenue Service
- Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans Internal Revenue Service
- 26 U.S. Code §213 (medical, dental, etc., expenses) Legal Information Institute, Cornell Law School
- IRS Notice 2006-69 (debit card substantiation for health FSAs and HRAs) Internal Revenue Service
- IIAS standards and eligible product list SIGIS (Special Interest Group for IIAS Standards)
- No Surprises Act: good faith estimates for uninsured or self-pay individuals, 45 CFR 149.610 Centers for Medicare & Medicaid Services
- CPT® Professional Edition (codes 96360–96379) American Medical Association
Reviewed under the IVConnection clinical and regulatory review policy. Report a correction to clinical@ivconnection.com.