Supartz FX Injection Cost: $234–$327/Dose (2026 Guide)
Supartz FX costs $234–$327 per syringe self-pay (3–5 injections per course). With Medicare Part B, patients typically pay $50–$100 per injection visit. 2026 pricing, Medicare billing, insurance coverage, and savings tips for knee osteoarthritis patients.
By Joint Pain Authority Team
Key Takeaways
- Supartz FX self-pay cost ranges from $234 to $327 per syringe (medication only) — a full 3-injection course totals $900–$2,500 and a 5-injection course $1,500–$4,000 including office visits
- With Medicare Part B, patients typically pay the 20% coinsurance — roughly $50–$100 per injection visit (drug + administration), or $150–$500 for a complete course, after meeting the annual deductible
- Supartz FX is billed under HCPCS code J7321 (shared with Hyalgan and Visco-3) — a per-dose code reimbursed at ASP+6%
- The injection administration is billed under CPT 20610 (or 20611 with imaging guidance) — a separate charge on top of the J7321 drug fee
- Most private insurance plans cover Supartz FX when medical necessity is documented; prior authorization is typically required and must be in place before the first injection
- Supartz FX is avian-derived (rooster comb) — patients with bird, egg, or poultry allergies must not use it; non-avian alternatives include Euflexxa, Durolane, and Monovisc
- Distributed exclusively in the U.S. by Bioventus (developed by Seikagaku Corporation, Japan); discount coupons via SingleCare can bring the per-syringe price to approximately $234
Supartz FX is one of the most widely used hyaluronic acid (HA) treatments for knee osteoarthritis in the United States, offering a 3- or 5-injection weekly series that has been prescribed since 1996. If you or a loved one is considering Supartz FX, understanding exactly what it costs — with Medicare, with private insurance, and out of pocket — is essential for planning your care.
This guide covers 2026 pricing for all scenarios, including a breakdown of Medicare Part B billing, private insurance hurdles, and practical tips for reducing your out-of-pocket costs.
What Is Supartz FX and Why It Costs What It Does
Supartz FX (sodium hyaluronate 10 mg/mL) is an injectable viscosupplement that restores cushioning and lubrication in the knee joint. It is derived from rooster comb (avian) tissue — the same natural source of hyaluronic acid used in the original 1996 FDA-approved formulation.
Supartz FX is extracted from rooster combs (avian tissue). Do not use Supartz FX if you have allergies to birds, feathers, eggs, or poultry proteins. If you have these allergies, ask your provider about non-avian alternatives such as Euflexxa (J7323, bacterial fermentation), Durolane (J7318, bacterial fermentation), or Monovisc (J7327, bacterial fermentation).
Manufacturer and distributor: Supartz FX is developed and manufactured by Seikagaku Corporation (Japan) and distributed exclusively in the United States by Bioventus, under an agreement running through at least May 2028. Each prefilled syringe contains 25 mg sodium hyaluronate in 2.5 mL, administered once weekly.
Why it costs what it does:
- Series dosing: Supartz FX requires 3 to 5 separate weekly office visits — each visit generates its own injection fee, office copay, and potentially an imaging charge. This is a key distinction from single-injection brands.
- Drug + procedure billing: The medication (J7321) and the knee injection procedure (CPT 20610/20611) are billed as two separate line items — your total bill per visit reflects both.
- Avian sourcing complexity: Raw material extraction from rooster comb tissue, purification to pharmaceutical grade, and sterile prefilling add manufacturing cost.
- Long track record: Supartz FX has been available since 1996 (originally as Supartz), giving it an extensive clinical evidence base — one reason insurers have well-established coverage pathways for it.
- Provider markup: Clinics purchase at wholesale and mark up to a retail price. Hospital outpatient departments typically charge more than office-based specialty clinics.
Supartz FX Cost Without Insurance (Self-Pay)
Self-Pay Price Ranges for Supartz FX (2026)
| Cost Component | Per Injection | 3-Injection Course | 5-Injection Course |
|---|---|---|---|
| Supartz FX syringe (retail) | $286–$327 | $858–$981 | $1,430–$1,635 |
| With GoodRx coupon | ~$247 | ~$741 | ~$1,235 |
| With SingleCare coupon | ~$234 | ~$702 | ~$1,170 |
| Office visit fee | $50–$200 | $150–$600 | $250–$1,000 |
| Imaging guidance (if billed) | $100–$300 | billed separately | billed separately |
| Total estimated self-pay | — | $900–$2,500 | $1,500–$4,000 |
Retail prices from GoodRx (2026) and Drugs.com. Coupon prices are for the medication only and require a participating pharmacy or clinic.
Why Prices Vary So Much
Self-pay prices for Supartz FX vary significantly because of several compounding factors:
- Provider type: Office-based specialty clinics (orthopedics, pain management) typically charge less than hospital outpatient departments, which add facility fees of $200–$500+ per visit on top of the drug and procedure charges.
- Geographic location: Urban markets and higher cost-of-living regions charge measurably more than rural or mid-size metro providers.
- Discount cards: GoodRx, SingleCare, and RxSaver can reduce the per-syringe cash price by 10–30%. However, these work best at pharmacies that dispense the medication directly; many clinics stock and bill Supartz FX in-house at their own price.
- 3 vs. 5 injections: Your provider’s recommendation for a 3- or 5-injection protocol directly affects your total course cost. A 3-injection protocol cuts your medication cost by 40% compared to the full 5-injection series.
- Bundled vs. unbundled billing: Some practices quote an all-inclusive self-pay price; others bill the injection visit, the drug, and imaging guidance as separate line items.
Tip: Call ahead and ask for the provider’s “self-pay rate” for a Supartz FX series. Specify whether imaging guidance is included or billed separately. Some clinics offer cash-pay discounts of 15–25% for patients who commit to the full course upfront.
Supartz FX Cost With Medicare Part B
Medicare Coverage for Supartz FX
Coverage status: Yes — Medicare Part B covers Supartz FX (HCPCS J7321)
Annual Part B deductible: $257 (2025 figure — verify the current year at Medicare.gov)
Typical patient cost per injection visit (after deductible is met):
- Approximately $50–$100 per injection visit (20% of Medicare-approved amount for drug + procedure)
- Full 3-injection course: $150–$300
- Full 5-injection course: $250–$500
Actual costs vary by region, provider type, whether imaging guidance is included, and whether the deductible has been met.
How Medicare Bills Supartz FX
Medicare uses HCPCS code J7321 for Supartz FX — the same per-dose code used for Hyalgan and Visco-3, since all three are sodium hyaluronate products in the same class. Each 2.5 mL syringe (25 mg) equals one billing unit of J7321.
Medicare pays for J7321 at ASP+6% (Average Sales Price plus 6%), updated quarterly by CMS. Based on recent CMS payment limit files, the Medicare-approved amount for J7321 is approximately $70–$80 per dose; your 20% share for the drug alone is roughly $14–$16 per injection.
In addition, the physician bills the injection administration separately — typically under CPT 20610 (arthrocentesis, major joint, without ultrasound guidance) or CPT 20611 (with ultrasound guidance). The Medicare-approved amount for CPT 20610 is approximately $100–$130; your 20% for the procedure is about $20–$26 per visit.
Combined patient cost per injection visit (drug + procedure, both at 20%): approximately $34–$42 for the direct charges. Actual patient costs of $50–$100 per visit reflect real-world variation in provider-specific approved amounts and any additional visit charges. Always ask your provider for a Good Faith Estimate before starting treatment.
Medicare Coverage Requirements
Medicare requires documentation that your provider submits with the claim. Standard requirements under LCD L30149 (which governs viscosupplementation for most Medicare Administrative Contractors) include:
Original Medicare generally does not require prior authorization for Supartz FX — if your provider documents medical necessity, the claim is processed without pre-approval. This is a key advantage over private insurance.
Medicare Advantage Plans
If you have a Medicare Advantage (Part C) plan, Supartz FX coverage may differ significantly from Original Medicare. Many Medicare Advantage plans require:
- Prior authorization before the first injection — and some require PA for each injection in the series
- Step therapy: proof that you’ve tried a specific first-line HA brand (e.g., Euflexxa or Synvisc) before Supartz FX will be authorized
- Network restrictions: only providers within the plan’s network are covered at the plan rate
Always verify coverage with your specific Medicare Advantage plan before scheduling. Call the member services number on your insurance card and ask specifically about Supartz FX (HCPCS J7321) coverage, prior authorization requirements, and participating providers.
Supartz FX Cost With Private Insurance
Most commercial insurance plans cover Supartz FX for knee osteoarthritis when medical necessity criteria are met — but the path to coverage is more involved than with Original Medicare.
Typical private insurance process and costs:
- Prior authorization is required for almost all private plans — your provider’s office submits clinical documentation before the first injection
- Documentation requirements: At least 3 months of failed conservative care (physical therapy with session counts, NSAID/acetaminophen use with dosages, sometimes a prior corticosteroid injection)
- Step therapy: Some plans require you to try a specific preferred HA brand first; Supartz FX may be a second-line option
- Copay or coinsurance per injection: Typically ~$60 per injection based on GoodRx insurance data; total course cost with insurance is approximately $100–$300 for most commercial plans
- Deductible: If your deductible hasn’t been met, you may pay the full allowed amount per visit until it is
- Authorization for series length: Confirm whether your authorization covers 3 or 5 injections — plans may authorize only 3, and the remaining doses could be denied if not included in the original PA
If a prior authorization expires or lapses after injection #1 or #2, the remaining injections in your series may be denied. Before starting, confirm that your authorization covers the full number of planned injections and the full authorization period. A reputable provider’s office will handle this verification proactively — if yours doesn’t, ask explicitly.
Tip: Have your provider confirm in writing that prior authorization is in place and covers the full course before your first injection. Patients who schedule without confirmed PA risk responsibility for the entire course self-pay cost.
Supartz FX vs. Other Multi-Injection Series: Cost Comparison
Supartz FX competes with several other multi-injection HA brands. Understanding how cost and HCPCS codes differ helps you discuss alternatives with your doctor if coverage or cost becomes a barrier.
| Brand | Injections | HCPCS Code | Source | Self-Pay/Dose | Medicare Coverage |
|---|---|---|---|---|---|
| Supartz FX | 3 or 5 | J7321 | Avian (rooster comb) | ~$234–$327 | Yes |
| Hyalgan | 3 or 5 | J7321 (shared) | Avian | ~$220–$300 | Yes |
| Visco-3 | 3 | J7321 (shared) | Avian | ~$220–$300 | Yes |
| Euflexxa | 3 | J7323 | Non-avian (bacterial) | ~$300–$400 | Yes |
| Orthovisc | 3–4 | J7324 | Non-avian (bacterial) | ~$300–$600 | Yes |
| Synvisc | 3 | J7325 | Avian | ~$300–$500 | Yes |
| Gelsyn-3 | 3 | J7328 | Non-avian | ~$200–$350 | Yes |
Key takeaway on J7321 sharing: Hyalgan and Visco-3 share the J7321 billing code with Supartz FX. For Medicare patients, the reimbursement rate is the same — your doctor’s choice between these three brands won’t change your Medicare coinsurance math. For private insurance with formulary restrictions, confirm which J7321-coded brand is preferred by your specific plan.
Non-avian multi-injection options matter for bird/egg allergy patients — among the series products above, Euflexxa (J7323), Orthovisc (J7324), and Gelsyn-3 (J7328) are all non-avian, giving patients who prefer a series over a single injection several allergy-safe choices.
Supartz FX vs. Single-Injection Brands: True Cost Comparison
Supartz FX requires 3–5 office visits. Single-injection brands complete the same treatment cycle in one visit. This difference matters for total out-of-pocket cost and time commitment.
| Supartz FX (5 inj) | Supartz FX (3 inj) | Durolane (1 inj) | Synvisc-One (1 inj) | Monovisc (1 inj) | |
|---|---|---|---|---|---|
| Injections needed | 5 | 3 | 1 | 1 | 1 |
| Office visits | 5 | 3 | 1 | 1 | 1 |
| Source | Avian | Avian | Non-avian | Avian | Non-avian |
| Medicare code | J7321 | J7321 | J7318 | J7325 | J7327 |
| Self-pay (medication) | $1,170–$1,635 | $702–$981 | $300–$1,465 | $600–$1,200 | $500–$1,000 |
| Medicare copays (~$30/visit) | ~$150 | ~$90 | ~$30 | ~$30 | ~$30 |
| Time commitment | 5 weeks | 3 weeks | 1 visit | 1 visit | 1 visit |
| Allergy-safe | No | No | Yes | No | Yes |
The hidden cost of multi-injection brands is time and visit copays. For Medicare patients with a $30 visit copay, the 5-injection Supartz FX course costs an extra $120 in copays compared to a single-injection brand — partly offsetting any medication cost savings. For patients on fixed incomes with limited transportation, five separate weekly trips represent a real burden.
That said, some patients — and some providers — prefer the gradual build-up of the series approach. Clinical evidence shows comparable pain relief outcomes between 3-injection and 5-injection protocols, and some patients respond better to HA that accumulates over multiple doses. Discuss the protocol preference with your provider based on your specific joint condition and lifestyle.
Hidden Costs to Budget For
When planning for a Supartz FX course, account for these expenses beyond the injection medication itself:
Frequently Overlooked Costs
Office/consultation fee: $50–$200 per visit — often billed separately from the injection itself. For a 5-injection course, you could owe $250–$1,000 in visit fees alone.
Imaging guidance (CPT 20611): $100–$300 per injection if billed separately. Ultrasound guidance improves accuracy of intra-articular placement and reduces soft-tissue complications, but adds cost at each visit. Confirm whether your provider includes this in a bundled charge or bills it per session.
Pre-injection knee X-rays: If you don’t have recent imaging, your provider may require X-rays before starting ($100–$300 without insurance). Medicare covers medically necessary X-rays at 80% after deductible.
Facility fees (hospital outpatient settings): If you receive Supartz FX injections in a hospital outpatient department rather than an office-based clinic, expect a separate facility fee of $200–$500+ per visit on top of the physician and drug fees. Office-based clinics do not charge facility fees.
Follow-up visit: Some providers schedule a 4–6 week check-in after the course to assess response — this generates another visit charge ($50–$200, or your applicable copay).
Transportation: Five weekly trips to a clinic may require transportation support if you have mobility limitations — factor in ride-share, family assistance, or medical transport costs.
How to Reduce Your Out-of-Pocket Costs
For Medicare Patients
For Self-Pay Patients
Frequently Asked Questions
How much does a full Supartz FX treatment course cost with Medicare?
With Original Medicare Part B (after your $257 annual deductible is met), a Supartz FX treatment course typically costs $150–$300 for a 3-injection series or $250–$500 for the 5-injection series — your 20% coinsurance on the Medicare-approved amounts for both the drug (J7321) and the injection procedure (CPT 20610). If your deductible hasn’t been met yet, first-visit costs will be higher.
Is Supartz FX safe for patients with chicken or egg allergies?
No. Supartz FX is derived from avian (rooster comb) tissue and is contraindicated in patients with allergies to birds, feathers, eggs, or poultry proteins. If you have these allergies, ask your provider about non-avian alternatives such as Euflexxa (J7323, 3-injection series derived from bacterial fermentation), Durolane (J7318, single injection, non-avian), or Monovisc (J7327, single injection, non-avian).
Does Medicare require prior authorization for Supartz FX?
Original Medicare Part B does not require prior authorization for Supartz FX — your provider simply documents medical necessity and submits the claim. However, if you have a Medicare Advantage (Part C) plan, your plan may require prior authorization, step therapy, or specific documentation. Always check with your Medicare Advantage plan before scheduling.
What HCPCS and CPT codes are used for Supartz FX billing?
Supartz FX is billed under HCPCS J7321 (Hyaluronan or derivative, Hyalgan or Supartz FX or Visco-3, for intra-articular injection, per dose). One 2.5 mL prefilled syringe (25 mg) = 1 billing unit of J7321. The injection administration is billed separately under CPT 20610 (arthrocentesis, major joint, without ultrasound guidance) or CPT 20611 (with ultrasound guidance). Both codes are typically billed together on the same date of service — verify with your provider’s billing team that both are included in your cost estimate.
Who manufactures Supartz FX, and is Bioventus the maker?
Supartz FX was originally developed by Seikagaku Corporation of Japan, where it continues to be manufactured (Country of Origin: Japan). Bioventus is the exclusive U.S. distributor under an agreement extending through at least May 2028. Do not confuse Bioventus’s marketing role with original development — Seikagaku is the originating company. Neither Smith & Nephew nor any other distributor currently holds U.S. rights.
How often can I receive Supartz FX, and what does that cost annually?
Medicare allows retreatment with Supartz FX every 6 months when the previous course was effective. Annual cost for two complete 5-injection courses with Original Medicare (20% coinsurance, deductible already met) is approximately $500–$1,000. Some commercial plans require a 12-month interval between series — confirm your plan’s policy. Self-pay patients receiving two 5-injection courses annually would pay approximately $3,000–$8,000 for medication alone, which is why Medicare or private insurance coverage is strongly worth pursuing.
Is Supartz FX covered by private insurance?
Yes — most commercial insurance plans cover Supartz FX for knee osteoarthritis when medical necessity is documented. Prior authorization is typically required before the first injection, and many plans require at least 3 months of documented failed conservative treatment (physical therapy, anti-inflammatories) before approving HA injections. Your actual out-of-pocket cost varies by plan and depends on your deductible, copay structure, and coinsurance rules.
Get Help Understanding Supartz FX Coverage
Join thousands of patients who've used our guides to navigate knee injection costs and Medicare coverage.
Join 10,000+ readers. No spam.
Related Resources
- Knee Gel Injection Cost Guide: All Brands Compared
- Durolane Injection Cost Guide: 2026 Pricing
- Synvisc-One Injection Cost Guide: 2026 Pricing
- Single Injection vs. Series: Which Is Right for You?
- Hyaluronic Acid Injections: Complete Treatment Guide
- Medicare Part B Coverage for Knee Injections
- HA Brands Guide 2026: All 8 FDA-Approved Options
- Supartz FX Brand Page: Clinical Evidence and Patient Guide
Last updated: March 2026. Pricing reflects current market data (GoodRx, SingleCare, Drugs.com) and CMS ASP+6% Medicare methodology; rates update quarterly. Always verify current costs with your specific provider and insurance plan.
Medical Disclaimer: This article is for educational purposes only. Consult your healthcare provider to determine if Supartz FX is appropriate for your condition and to verify current coverage with your insurance plan. Patients with avian protein allergies should not use Supartz FX.
Topics
Enjoyed this article?
Get more insights like this delivered to your inbox weekly.
Join 10,000+ readers. No spam.