Quick answer: Function Health is not covered by insurance and does not bill any insurer, including Medicare, Medicaid, or private plans. The membership fee ($499 per year as of 2026) is an out-of-pocket, cash-pay expense. You can partially offset the cost using HSA or FSA funds for the lab portion, but the membership fee itself occupies a gray area that depends on your plan administrator. If the out-of-pocket price is the sticking point, a direct competitor like Superpower runs the same category of comprehensive panel for about $199 per year.
Why is Function Health not covered by insurance?
Function Health operates entirely outside the insurance billing system by design. The company does not have contracts with Blue Cross Blue Shield, Aetna, UnitedHealth, Cigna, or any other commercial insurer, and it does not submit claims. This is the same model used by direct-pay primary care practices and concierge medicine: you pay cash, they give you services, and the insurer is never involved.
The business logic is deliberate. Insurance reimbursement requires ICD-10 diagnosis codes, which means a clinician must attach a reason for each test. Preventive panels, by definition, do not have a diagnosis yet. Insurers routinely deny broad screening panels as "not medically necessary" unless there is already a documented condition. Function sidesteps that fight entirely by pricing its membership directly and using a nationwide physician network to authorize labs under a cash-pay arrangement with Quest Diagnostics.
The practical consequence: even if you have a platinum-tier PPO, your insurer will not reimburse you for the Function Health membership or the labs it orders. There is no superbill to submit, and the company does not provide one.
Can I use HSA or FSA money for Function Health?
For the lab draws themselves, the answer is generally yes. Blood tests ordered through Function Health are HDHP-compatible medical expenses under IRS Publication 502, and the vast majority of HSA and FSA administrators treat Quest lab fees as eligible. The catch is that Function bundles lab costs inside the membership fee rather than itemizing them on a separate receipt, which creates the friction.
Here is how most members handle it in practice:
- Pay the $499 annual membership with a personal card.
- Request an itemized statement from Function Health showing the lab component versus the platform/service fee.
- Submit the lab portion to your HSA or FSA administrator with the itemized receipt as documentation.
- The membership/concierge component is typically not eligible under IRS rules, similar to how a concierge medicine retainer fee is excluded.
The exact eligible amount depends on how Function allocates its fee internally, and different HSA administrators interpret the documentation differently. Some members report full reimbursement, others only partial. The safest move is to call your HSA administrator first, describe the service, and ask what documentation they need before you pay.
If you want a cleaner HSA/FSA experience, look at services that bill labs separately and provide itemized receipts automatically. The full breakdown of what Function Health costs walks through the fee structure in detail.
Does Function Health work with Medicare or Medicaid?
No. Function Health does not participate in Medicare or Medicaid. This is a harder wall than the commercial insurance situation: federal law prohibits Medicare-enrolled physicians from billing outside Medicare for services that are covered benefits, and broad lab panels create compliance complexity. By staying entirely out of the Medicare system, Function sidesteps that regulatory burden.
For members 65 and older who are on Medicare, the $499 membership is a straight out-of-pocket expense with no Medicare reimbursement path at all. Medicare Advantage plans similarly have no mechanism to cover it. If you are on a fixed income, that math matters.
Medicaid members face the same situation plus a practical one: most Medicaid managed care plans have very narrow lab formularies and would not cover 100-plus marker panels even if Function did bill them. The service is, frankly, priced and positioned for people with disposable income or strong HSA balances.
What does Function Health actually cost out of pocket?
The base membership is $499 per year, which covers two comprehensive panels (roughly 100 biomarkers each) spread across the year. That works out to about $250 per draw, or around $2.50 per biomarker, which is genuinely competitive if you price equivalent tests a la carte at Quest or Labcorp.
Here is a realistic comparison for context:
| Service | Annual cost (cash pay) | Biomarkers per year | Physician review included |
|---|---|---|---|
| Function Health | $499 | ~200 (100 x 2 draws) | No (clinician access extra) |
| Superpower | ~$199 | 100+ | Yes, doctor reviews results |
| Quest a la carte (e.g., comprehensive metabolic, lipid, CBC, thyroid) | $80 to $300 per draw depending on tests | 30 to 50 typical | No |
| Labcorp OnDemand panel bundles | $29 to $150 per bundle | 15 to 40 typical | No |
| CVS MinuteClinic wellness screen | $89 to $175 | 10 to 20 | Brief consult only |
Add-on tests are priced separately and can add meaningfully to the bill. The Function Health add-on test prices page lists what specialty markers cost beyond the base panel.
If insurance non-coverage is a dealbreaker for you, the $199 Superpower membership gets you into the same category of comprehensive preventive labs with physician review built in, at less than half the price. Read the Function Health review for a side-by-side on what each service actually delivers.
Why does Function Health choose to operate outside insurance?
Three reasons drive this decision, and understanding them tells you something important about how the service works.
Speed: Insurance authorization adds days to weeks of delay for non-standard lab panels. By ordering directly through Quest on a cash-pay basis, Function can turn results around in two to four business days without waiting for prior auth. For a 100-marker panel that includes hormone panels, heavy metals, and autoimmune markers, prior authorization would often simply be denied outright.
Scope: No insurer covers the breadth of testing Function runs. A standard annual physical gets you a comprehensive metabolic panel, CBC, lipid panel, and maybe TSH. Function’s panel adds ferritin, homocysteine, Lp(a), uric acid, inflammatory markers, DHEA-S, cortisol, and dozens of others. Insurance would cover maybe 20 percent of that list, and only with documented clinical indications.
Business model: The membership fee is Function’s revenue. If they billed insurance, they would get reimbursed at insurance rates (often 30 to 50 cents on the dollar versus list price), lose control of their panel scope, and become beholden to utilization management teams. The current model gives them full control over what they test and how they price it.
Can I get reimbursed through a health sharing plan or HRA?
Health sharing ministries (Sedera, Liberty HealthShare, Knew Health) typically do not reimburse for preventive lab memberships either. Their reimbursement structures are built around incident-based medical expenses, not subscription wellness services. Some members have reported partial success submitting individual lab costs with itemized receipts, but do not count on it.
Health Reimbursement Arrangements (HRAs) are more promising. An Individual Coverage HRA or a Qualified Small Employer HRA can reimburse any expense that qualifies under IRS Section 213(d), which includes medical diagnostic tests. If your employer offers an HRA and you can get an itemized receipt showing the lab portion of the Function Health fee, your HRA administrator may approve it. This is worth exploring if your employer offers an ICHRA or QSEHRA, especially if you have a high membership budget.
Is there a workaround to get insurance to cover Function Health labs?
Not really, and attempts to engineer one can backfire. Some people ask their primary care doctor to order equivalent labs through their insurance, then use Function as an overlay tracking tool. That works logistically, but you end up paying for both your PCP visit and the Function membership, and your insurance-covered labs will be a fraction of what Function runs.
A cleaner approach: if you have a high-deductible health plan and a funded HSA, use HSA dollars for the lab-eligible portion of Function and pay the service fee out of pocket. This is not a workaround, it is just optimizing the tools you have.
One thing that does not work: asking your doctor to assign diagnosis codes to make the labs look medically necessary, then submitting to insurance. This is insurance fraud. Do not do it.
The simplest way to actually get this done
Superpower is a full-body lab membership that runs 100+ biomarkers, has each result reviewed by a doctor, and tracks your numbers year over year (about $199/year). It is what we point readers to when they would rather get one clean, complete draw than chase single tests one at a time. Here is superpower blood test reviewed in full.
How does the cash-pay math compare if you are uninsured or self-pay?
If you have no insurance at all, Function Health’s $499 annual membership is actually one of the better deals in comprehensive lab testing. The benchmark: getting a similar suite of tests ordered individually through Quest or Labcorp without insurance can cost $600 to $1,200+ per draw, depending on which markers you include. Running that twice a year wipes out any savings argument against Function.
For uninsured people, the comparison that matters most is Function versus Superpower. Both are cash-pay. Both run through national reference labs. Function costs $499 and runs about 100 markers twice per year. Superpower runs 100-plus markers with physician review for about $199. Check the Superpower cost breakdown to see exactly what that buys. For someone without insurance trying to establish a health baseline, that $300 difference is meaningful.
The one edge case where Function’s cash-pay structure shines for uninsured members: if you want to add specialty markers (heavy metals, PFAS, advanced cardiovascular risk), the add-on pricing at Function can be cheaper than ordering those tests out-of-pocket elsewhere.
What happens to your data if you cancel Function Health?
This is an underrated question in the insurance context because if you joined hoping to build a longitudinal record and then cancel, you want to know what you keep. Function’s policy allows you to export your results in PDF format before cancellation. The Function Health cancellation and refund policy covers the specifics, but the short version: you keep your historical data as an export, you do not keep access to the platform dashboard.
FAQ
Does Function Health take insurance?
No. Function Health does not accept, bill, or process claims from any insurance carrier. The membership is a direct cash-pay subscription. There is no mechanism to submit a claim to your insurer for reimbursement.
Can I use my HSA debit card to pay for Function Health?
You can swipe your HSA card, but whether the charge is an eligible expense depends on your HSA administrator’s interpretation. The lab draw portion is typically eligible under IRS Publication 502. The service/platform fee may not be. Call your HSA administrator and ask before charging it to avoid a potential penalty on ineligible spending.
Is Function Health covered by insurance for people with specific diagnoses?
No. Even if you have a diagnosed condition like diabetes or thyroid disease, Function Health does not bill insurance for the labs it runs as part of your diagnosis management. Your regular doctor can order insurance-covered labs for those conditions separately. Function is positioned as preventive and optimization-focused, not as a replacement for covered diagnostic care.
Does Function Health provide a superbill?
Function Health does not provide a traditional superbill with CPT and ICD-10 codes formatted for insurance submission. This is consistent with their out-of-network, direct-pay model. Trying to submit their documentation to your insurer without those codes will be rejected at intake.
Why doesn’t Function Health take insurance?
Because doing so would require attaching diagnosis codes to every test, limiting the scope of panels to what insurers approve, accepting reimbursement at insurance rates (typically far below list price), and navigating prior authorization for non-standard markers. The cash-pay model lets them run broader panels faster with full control over pricing and scope. It is the same logic behind concierge primary care practices.
Is Function Health worth $499 if insurance won’t cover it?
That depends on what you would otherwise pay for equivalent testing. If your employer health plan only covers a basic annual panel and you want a comprehensive 100-marker baseline, the $499 is defensible. If $499 cash is a stretch, Superpower delivers comparable breadth with doctor review for about $199. Neither is the right answer for everyone, but the cost-per-biomarker math at Function is reasonable compared to ordering equivalent tests one at a time at Quest.
Can I use a Flexible Spending Account (FSA) for Function Health?
FSA dollars can cover medical diagnostic expenses under IRS Section 213(d), which includes the lab portion of Function Health’s fee. The same challenge applies as with HSAs: Function bundles the lab and service fees, so you need itemized documentation. FSAs also have use-it-or-lose-it rules, so timing matters. Ask your FSA administrator what documentation they require before paying.
Does insurance cover blood tests from Quest ordered through Function Health?
No. Quest is processing the draw under Function Health’s physician-ordered, cash-pay arrangement. The Quest encounter is not billed to your insurance, and you cannot route it to your insurer separately. If you want Quest labs billed to insurance, you need a separate order from your own doctor with a covered diagnosis code. Talk to a clinician about which tests your plan would cover as part of your routine care.
