Does Medicare Cover Knee Gel Injections? Coverage Guide for 2026

If you’re living with knee pain and considering injection therapy, you probably have questions about what Medicare covers. You’re not alone — Medicare coverage for joint injections can be confusing, with different rules for different types of treatments, different brands, and different Medicare plans.

This guide answers the most common Medicare questions we hear from patients like you. Whether you’re considering gel shots (hyaluronic acid), cortisone injections, or newer treatments like PRP, we’ll help you understand what’s covered, what you’ll pay, and how to avoid surprise bills. We also cover specific brand coverage for Monovisc, Orthovisc, Euflexxa, and other popular gel injection brands.

Key Takeaways

Medicare Part B covers hyaluronic acid (HA) injections and cortisone shots for knee osteoarthritis when medically necessary
All major HA brands are covered: Synvisc-One, Monovisc, Orthovisc, Euflexxa, Gel-One, Supartz FX, Hyalgan, and Durolane
You’ll typically pay 20% of the Medicare-approved amount after meeting your $257 deductible (2026)
Medicare Advantage plans often have lower copays but require prior authorization and in-network providers
PRP and stem cell injections are not covered by Medicare
If Medicare denies your claim, you have the right to appeal — and appeals succeed 40-60% of the time with proper documentation

Does Medicare Cover Knee Injections?

Yes, Medicare Part B covers certain knee injections when they’re medically necessary. This includes:

Covered treatments:

Hyaluronic acid injections (Synvisc, Euflexxa, Gel-One, Monovisc, etc.)
Cortisone (corticosteroid) injections
Diagnostic joint injections

Not covered:

PRP (platelet-rich plasma) injections
Stem cell treatments
Experimental or investigational treatments

Medicare considers these injections “durable medical equipment” under Part B, the same part that covers doctor visits and outpatient care.

What Are Hyaluronic Acid Injections?

Hyaluronic acid (HA) injections, sometimes called “gel shots” or “viscosupplementation,” work by replacing the natural cushioning fluid in your knee joint. Think of it as adding oil to a squeaky hinge. Your body naturally produces hyaluronic acid, but osteoarthritis breaks it down faster than your joint can replace it.

The treatment typically involves one to five injections, depending on the brand. Medicare covers the full course of treatment when prescribed by your doctor.

Which Gel Injection Brands Does Medicare Cover?

Medicare Part B covers all FDA-approved hyaluronic acid brands for knee osteoarthritis. Here is a brand-by-brand breakdown of what Medicare covers and what you can expect to pay:

Brand	Injections	Medicare Covers?	Your Estimated Cost (20%)
Synvisc-One	1 injection	Yes	$160-$240
Monovisc	1 injection	Yes	$140-$220
Gel-One	1 injection	Yes	$130-$190
Durolane	1 injection	Yes	$180-$260
Orthovisc	3-4 weekly injections	Yes	$150-$240
Euflexxa	3 weekly injections	Yes	$120-$180
Supartz FX	5 weekly injections	Yes	$140-$220
Hyalgan	3-5 weekly injections	Yes	$130-$200

Does Medicare cover Monovisc? Yes. Monovisc is a single-injection brand made by Anika Therapeutics. Medicare Part B covers it under the same rules as all other FDA-approved HA injections. You pay 20% coinsurance after your deductible.

Does Medicare cover Orthovisc? Yes. Orthovisc is a 3-4 injection series, also made by Anika Therapeutics. Medicare covers the full series. Each weekly injection is billed separately, and you pay 20% of each.

Does Medicare cover Euflexxa? Yes. Euflexxa is a 3-injection series made by Ferring Pharmaceuticals. It is one of the few HA products made without animal-derived ingredients, which matters for patients with bird or egg allergies. Medicare covers all three injections.

Does Medicare cover Gel-One? Yes. Gel-One is a single-injection brand made by Bioventus. It tends to have a lower Medicare-approved amount than Synvisc-One, so your 20% coinsurance may be slightly less.

Your doctor may recommend one brand over another based on your specific condition, allergies, or treatment history. From a Medicare coverage standpoint, all approved brands are treated equally — the choice should be clinical, not financial.

What Does Medicare Require for Coverage?

Medicare has specific requirements before they’ll cover knee injections. Your doctor must document:

Medical necessity:

Diagnosis of knee osteoarthritis (confirmed by X-ray or MRI)
Failed conservative treatment for at least 6 weeks
Documented functional limitations from knee pain

Conservative treatments include:

Physical therapy
Over-the-counter pain relievers (acetaminophen, ibuprofen)
Weight loss attempts (if appropriate)
Use of assistive devices (cane, walker, knee brace)

This doesn’t mean you must try every possible treatment. But Medicare wants proof that simpler treatments weren’t enough before approving injections.

How Much Will I Pay Out of Pocket?

If you have Original Medicare (Parts A and B), here’s what you’ll typically pay:

Your costs:

Annual Part B deductible: $257 (2026)
20% coinsurance on the Medicare-approved amount
No coverage limit once approved

Example cost breakdown: Let’s say the Medicare-approved amount for a Synvisc-One injection is $1,200.

Medicare pays: $960 (80%)
You pay: $240 (20%)
Total out-of-pocket: $240 plus deductible if not yet met

How to lower your out-of-pocket costs:

Medigap (Medicare Supplement) plans: Plans C, D, F, G, and N cover some or all of your 20% coinsurance. With a good Medigap plan, you may owe nothing beyond your monthly premium.
Time your treatment: If you have other medical expenses early in the year that meet your deductible, schedule gel injections afterward so you only pay the 20%.
Choose a lower-cost brand: Gel-One and Euflexxa tend to have lower Medicare-approved amounts, meaning your 20% share is smaller.

For a complete breakdown of costs across brands and insurance types, see our knee gel injection cost guide.

Is Prior Authorization Required?

This depends on which type of Medicare you have.

Original Medicare (Part B)

Original Medicare generally does not require prior authorization for hyaluronic acid injections. Your doctor simply needs to document medical necessity in your chart — an osteoarthritis diagnosis confirmed by X-ray, and evidence that conservative treatments were tried first.

However, starting in 2026, CMS has expanded prior authorization requirements for certain durable medical equipment and services. HA injections remain exempt from mandatory prior authorization under Original Medicare, but this could change. Your doctor’s office will know the current rules.

Medicare Advantage Plans

Most Medicare Advantage (Part C) plans do require prior authorization before gel injections. This is one of the biggest differences between Original Medicare and Medicare Advantage.

What the prior authorization process looks like:

Your doctor submits a request to your plan with your diagnosis, X-ray results, and documentation of failed conservative treatments
The plan reviews the request (usually 3-14 business days for standard requests, 72 hours for urgent requests)
You receive an approval or denial letter
If approved, treatment can proceed
If denied, you can appeal (see below)

Common reasons prior authorization is denied:

Missing documentation of conservative treatment attempts (PT, NSAIDs, bracing)
X-rays not recent enough (most plans want imaging within the past 12 months)
Doctor did not specify the brand and number of injections
Treatment requested for a joint other than the knee (coverage may differ for hip or shoulder)

Tip: Ask your doctor’s office to submit prior authorization as soon as you discuss gel injections. Don’t wait until your appointment day — a denial can delay treatment by weeks. For a detailed walkthrough, see our prior authorization guide.

Does Medicare Cover Both Knees?

Yes, Medicare covers injections for both knees if both have osteoarthritis. Each knee is treated and billed separately.

However, some doctors prefer to treat one knee at a time, waiting 1-2 weeks between injections. This helps monitor how you respond to treatment and reduces the risk of complications.

Medicare Advantage vs. Original Medicare: Key Differences for Knee Injections

This is one of the most confusing areas of Medicare coverage. Original Medicare (Parts A and B) and Medicare Advantage (Part C) both cover gel injections, but they work very differently in practice.

Feature	Original Medicare (Part B)	Medicare Advantage (Part C)
Coverage	All FDA-approved HA brands	All FDA-approved HA brands
Your cost	20% coinsurance (typically $75-$300)	Flat copay (typically $20-$75)
Prior authorization	Usually not required	Almost always required
Provider choice	Any Medicare-accepting provider	Must use in-network providers
Referral needed	No	Often yes (HMO plans)
Medigap eligible	Yes (can reduce your 20%)	No (cannot use Medigap with MA)
Annual out-of-pocket max	No cap (unless you have Medigap)	Yes ($3,000-$8,000 depending on plan)

When Original Medicare Is Better for Gel Injections

You want to choose any doctor who accepts Medicare
You have a Medigap plan that covers your 20% coinsurance
You don’t want to deal with prior authorization delays
You need treatment quickly (no waiting for plan approval)

When Medicare Advantage Is Better for Gel Injections

You want predictable, low copays ($20-$75)
You’re already seeing an in-network orthopedic specialist
You want an annual out-of-pocket maximum to cap your costs
You don’t mind the prior authorization process
Your plan covers additional services like acupuncture or chiropractic care

Important: If you have Medicare Advantage, call the number on your insurance card before scheduling treatment. Confirm that your specific doctor is in-network, that the brand your doctor recommends is covered, and whether prior authorization is needed. For a deeper dive, see our Medicare Advantage coverage guide.

Does Medicare Cover Cortisone Shots?

Yes, Medicare Part B covers cortisone (corticosteroid) injections for knee, hip, shoulder, and other joint pain when medically necessary. Cortisone shots are one of the most commonly covered joint treatments under Medicare.

What Medicare Covers for Cortisone

The injection itself: Corticosteroid medication and administration
Office visit: The appointment where you receive the injection
Imaging guidance: If your doctor uses ultrasound or fluoroscopy to guide placement

What You’ll Pay for a Cortisone Shot with Medicare

Cortisone injections cost significantly less than gel injections:

Medicare-approved amount: Typically $100-$300 (depending on location and guidance)
Your 20% coinsurance: Usually $20-$60
With Medigap: Potentially $0 out-of-pocket

How Often Medicare Covers Cortisone

Medicare does not set a strict limit on the number of cortisone injections per year. However, your doctor will typically space them 3-4 months apart (no more than 3-4 injections per joint per year) because:

Repeated cortisone can weaken cartilage and tendons over time
The injections become less effective with frequent use
Research suggests limiting cortisone to preserve long-term joint health

Many patients start with cortisone for quick relief and then transition to hyaluronic acid injections for longer-lasting results. Medicare covers both approaches.

Cortisone vs. Gel Injections: Coverage Comparison

Feature	Cortisone Injection	Gel (HA) Injection
Medicare covers?	Yes	Yes
Your cost (20%)	$20-$60	$75-$300
Prior auth needed?	Rarely	Sometimes (MA plans)
Relief duration	4-8 weeks	3-6 months
Repeat frequency	Every 3-4 months max	Every 6 months

If you need quick pain relief, cortisone is faster and cheaper. If you want longer-lasting relief with fewer injections per year, gel shots are the better choice. Some patients alternate between the two.

Why Doesn’t Medicare Cover PRP or Stem Cells?

Medicare doesn’t cover PRP (platelet-rich plasma) or stem cell treatments because the FDA hasn’t approved them for knee osteoarthritis. Medicare only covers FDA-approved treatments with proven effectiveness.

If you’re considering PRP or stem cells:

Expect to pay $500-$2,500 per treatment out of pocket
Ask about payment plans
Get cost estimates in writing before treatment
Understand these are considered experimental by Medicare

Some patients choose to pay for these treatments themselves. That’s a personal decision, but it’s important to know Medicare won’t reimburse you.

How Do I Avoid Surprise Medical Bills?

Here are five ways to prevent unexpected costs:

1. Confirm coverage before treatment Call Medicare (1-800-MEDICARE) or your Medicare Advantage plan to verify coverage for the specific treatment your doctor recommends.

2. Use in-network providers If you have Medicare Advantage, confirm your doctor is in-network. Out-of-network care can cost significantly more.

3. Ask about facility fees Getting treatment in a hospital outpatient department costs more than a doctor’s office. Ask where the procedure will happen.

4. Get the Medicare-approved amount Ask your doctor’s billing office what Medicare pays for the procedure. This helps you calculate your 20% share.

5. Request an Advanced Beneficiary Notice (ABN) If your doctor thinks Medicare might deny coverage, they must give you an ABN explaining why and what you’ll owe if Medicare doesn’t pay.

What If Medicare Denies My Claim?

Do not panic. Medicare denials for gel injections happen, but they are not the final word. You have the right to appeal, and appeals succeed 40-60% of the time when proper documentation is provided.

Why Medicare Might Deny Your Gel Injection Claim

The most common denial reasons are:

Missing conservative treatment documentation: Your chart does not show that you tried physical therapy, NSAIDs, or other first-line treatments before requesting gel injections
Incomplete diagnosis: No X-ray or imaging confirming osteoarthritis in the knee
Medical necessity not established: The documentation does not clearly explain why gel injections are needed
Wrong billing codes: Your provider’s office used incorrect CPT or diagnosis codes (this is more common than you might think)
Repeat treatment too soon: You’re requesting another round of gel injections before the standard 6-month waiting period

How to Appeal a Medicare Denial: Step by Step

Step 1: Read the denial notice carefully Medicare sends a “Medicare Summary Notice” (MSN) or an “Explanation of Benefits” (EOB) explaining why the claim was denied. Look for the specific reason code.

Step 2: Talk to your doctor immediately Your doctor may be able to fix the issue quickly. Common fixes include:

Adding missing documentation to your chart
Correcting billing codes and resubmitting
Writing a letter of medical necessity

Step 3: File a formal appeal (Redetermination) You have 120 days from the denial date to file. This is the first level of appeal. A different Medicare reviewer looks at your case with fresh eyes.

What to include in your appeal:

Your doctor’s letter explaining why you need gel injections
Records of conservative treatments you tried and why they failed
Recent X-rays or imaging showing your osteoarthritis
Relevant clinical studies supporting HA injections for your condition
Functional assessment showing how knee pain limits your daily activities

Step 4: If the first appeal fails, keep going Medicare has five levels of appeal:

Redetermination (by the Medicare Administrative Contractor)
Reconsideration (by a Qualified Independent Contractor)
Administrative Law Judge hearing (for claims over $180)
Medicare Appeals Council review
Federal court review (for claims over $1,840)

Most successful appeals are resolved at levels 1 or 2. You rarely need to go further.

Step 5: Get help if needed

Your state’s State Health Insurance Assistance Program (SHIP) offers free Medicare counseling
Call 1-800-MEDICARE for general appeal guidance
Consider a Medicare advocate or patient advocate at your hospital

Pro tip: The single most effective thing you can do is have your doctor write a detailed letter of medical necessity. This letter should explain what treatments you tried, why they did not work, and specifically why gel injections are the appropriate next step for your condition.

Can I Get Injections More Than Once?

Yes, many patients receive multiple rounds of knee injections over time. Coverage depends on how well the treatment worked.

For HA injections:

Many patients get relief for 6-12 months
Medicare covers repeat treatment when pain returns
No lifetime limit on treatments

For cortisone injections:

Relief typically lasts 4-8 weeks
Can be repeated as needed (with doctor guidance)
Medicare covers multiple injections

Your doctor will track your response to treatment. If injections stop working, Medicare may question medical necessity for continued treatment.

How Often Will I Need Follow-Up Appointments?

Medicare covers follow-up appointments to monitor your progress. Typical schedule:

2-week follow-up after injection
Monthly check-ins for the first 3 months
Then as needed based on symptoms

These visits help your doctor document treatment effectiveness, which is important for future coverage approval.

Frequently Asked Questions

Does Medicare pay for gel knee injections?

Yes, Medicare Part B pays for FDA-approved gel (hyaluronic acid) knee injections when your doctor documents medical necessity. You’ll need an osteoarthritis diagnosis confirmed by X-ray and evidence that conservative treatments like physical therapy and NSAIDs were tried first. After meeting your annual $257 deductible, Medicare pays 80% of the approved amount and you pay 20%. For most patients, that means $75-$300 out-of-pocket per treatment course.

Does Medicare cover cortisone shots?

Yes, Medicare Part B covers cortisone (corticosteroid) injections for joint pain including knee, hip, and shoulder. Cortisone shots cost less than gel injections — you’ll typically pay $20-$60 (your 20% coinsurance). Medicare does not limit the number of cortisone injections per year, but doctors typically recommend no more than 3-4 per joint per year to protect your cartilage.

Does Medicare cover Monovisc?

Yes, Medicare covers Monovisc. It is an FDA-approved single-injection hyaluronic acid product made by Anika Therapeutics. Medicare pays 80% of the approved amount, and you pay 20% coinsurance after your deductible. Monovisc is a popular choice because it requires only one injection rather than a series of three to five weekly visits.

Does Medicare cover Orthovisc?

Yes, Medicare covers Orthovisc. It is a 3-4 injection series made by Anika Therapeutics (the same company that makes Monovisc). Each weekly injection is billed separately, and Medicare covers each one. Your 20% coinsurance applies to each injection in the series.

Does Medicare cover Euflexxa?

Yes, Medicare covers Euflexxa. It is a 3-injection series made by Ferring Pharmaceuticals. Euflexxa is notable because it is made through bacterial fermentation rather than from rooster combs, making it suitable for patients with bird or egg allergies. Medicare covers the full 3-injection series.

What is the difference between Original Medicare and Medicare Advantage for knee injections?

Both cover gel injections, but they work differently. Original Medicare lets you see any Medicare-accepting provider without prior authorization, but you pay 20% coinsurance with no annual cap. Medicare Advantage plans typically offer lower flat copays ($20-$75) and cap your annual out-of-pocket spending, but they require prior authorization and limit you to in-network providers. See the detailed comparison table above.

How do I know if my Medicare Advantage plan covers gel injections?

Call the member services number on your insurance card and ask these specific questions: (1) Does my plan cover hyaluronic acid injections for knee osteoarthritis? (2) Which brands are on my plan’s formulary? (3) Do I need prior authorization? (4) Is my doctor in-network? (5) What is my copay or coinsurance for this procedure?

Can I switch from Medicare Advantage to Original Medicare to get gel injections?

You can switch during the Open Enrollment Period (October 15 - December 7 each year) or during the Medicare Advantage Open Enrollment Period (January 1 - March 31). However, switching plans just for one treatment may not make financial sense. Compare the total annual cost under each option, including monthly premiums, deductibles, and expected out-of-pocket costs.

Does Medicare cover gel injections for hip or shoulder pain?

Medicare Part B covers cortisone injections for hip and shoulder pain. However, coverage for hyaluronic acid injections in joints other than the knee is more limited. Some HA products have FDA approval only for knee osteoarthritis. Medicare Advantage plans may vary in their coverage for non-knee HA injections. Ask your doctor and insurance plan about coverage for your specific joint.

Where Can I Learn More?

For detailed information about Medicare coverage for specific treatments:

Medicare Part B Coverage Guide: Our detailed guide to Part B coverage for joint injections
Medicare Advantage Coverage Guide: How MA plans handle gel injection coverage
Prior Authorization Guide: Step-by-step help navigating prior auth
Knee Gel Injection Cost Guide: Complete cost breakdown by brand and insurance type
Medicare.gov: Official Medicare website with coverage search tool
1-800-MEDICARE: Speak with a representative about your specific situation

Final Thoughts

Understanding Medicare coverage for knee injections doesn’t have to be overwhelming. Here is what matters most:

Medicare covers gel injections and cortisone shots when medically necessary — all major brands are included
Your cost is usually $75-$300 for gel injections (20% coinsurance) or $20-$60 for cortisone
Medicare Advantage plans often have lower copays but require prior authorization
Keep detailed records of every conservative treatment you try — this documentation is your best protection against denials
Always appeal denials — 40-60% of appeals succeed with proper documentation

If you’re considering knee injections, talk with your doctor about your specific situation. They can help you navigate Medicare requirements and ensure you get the coverage you’re entitled to.

This article is for informational purposes only and does not constitute medical or insurance advice. Medicare coverage can vary based on individual circumstances. Always consult with your healthcare provider and Medicare directly for personalized guidance.

Last medically reviewed: March 2026