Medicare Part B covers prosthetics, but only certain types and only when specific conditions are met

Medicare Part B will pay for a prosthetic limb or device if a doctor orders it as medically necessary and you meet the program's rules. The coverage is real, but it has limits: Medicare covers the device itself, fitting, and adjustments, but not all prosthetics may have access to, and you will pay a share of the cost. The most common covered items are artificial legs, arms, hands, and feet — but not cosmetic devices, sports equipment, or replacements you want for convenience rather than medical need.

The process starts with your doctor. You cannot walk into a prosthetics shop and have Medicare pay. Your physician must document that the prosthetic is medically necessary to restore function lost because of illness, injury, or amputation. Medicare then reviews the order against its coverage rules. If approved, you typically pay 20 percent of the approved amount after you have met your Part B deductible for the year.

Key Takeaways

  • Your doctor must order the prosthetic and state in writing that it is medically necessary to restore lost function.
  • Medicare covers the device, fitting, and adjustments, but you pay 20 percent of the approved cost after meeting your deductible.
  • Replacement prosthetics are covered only when your existing device cannot be repaired or when medical need changes significantly.
  • The prosthetics supplier must be enrolled in Medicare and must submit the claim on your behalf.
  • Repairs and adjustments are covered separately, but routine maintenance and replacement parts may have limits.

What Medicare Part B actually covers for prosthetics

Medicare covers the prosthetic device itself — the artificial limb or body part — along with the initial fitting, alignment, and training you need to use it. This includes the socket (the part that attaches to your body), the structural components, and any mechanical joints or powered elements that are part of the standard device. Medicare also covers adjustments and modifications made during the first year after fitting, and repairs to the device when it breaks or wears out.

The coverage applies to prosthetics for legs, arms, hands, feet, and fingers. It also covers some orthotic devices — braces and supports that help stabilize or correct body movement — though the rules for orthotics are slightly different and depend on the specific device. Breast prostheses following mastectomy are covered under different rules and are typically covered at 100 percent with no deductible.

What Medicare does not cover: cosmetic prosthetics (devices meant only to look natural without restoring function), sports-specific prosthetics, replacement devices you want for personal preference, and devices that are experimental or not yet approved by the FDA. Medicare also does not cover routine maintenance like cleaning supplies, socks, or liners — though replacement liners and socks may be covered under certain circumstances.

How to get Medicare to cover your prosthetic

The first step is a conversation with your doctor. Explain what function you have lost and what a prosthetic would allow you to do. Your doctor will examine you and, if they believe a prosthetic is medically necessary, will write an order that includes the specific type of device, the reason it is needed, and your medical history related to the loss of function. This order is your starting point — without it, Medicare will not consider coverage.

Next, you will need to find a prosthetics supplier who is enrolled in Medicare. Not all prosthetics shops are. You can search for enrolled suppliers on the Medicare website or ask your doctor for a referral. Once you have chosen a supplier, they will take measurements, create a fitting plan, and submit a claim to Medicare on your behalf. The supplier will include your doctor's order and any supporting medical records.

Medicare will review the claim and either approve it, request more information, or deny it. This review can take one to three weeks. If approved, you will be notified of your cost share — usually 20 percent of the approved amount, after your Part B deductible. The supplier will then fabricate and fit the device. If Medicare denies the claim, you have the right to appeal, and your supplier can help you gather additional medical evidence to support the appeal.

What you will pay out of pocket

Your cost depends on whether Medicare approves the claim and what the approved amount is. Once approved, you pay 20 percent of the Medicare-approved cost after you have met your Part B deductible ($240 in 2024, though this amount changes yearly). If the prosthetics supplier charges more than Medicare's approved amount, you are responsible for the difference — this is called "balance billing," and it can add significantly to your cost.

To avoid surprise bills, ask your supplier upfront what the total cost will be, what Medicare's approved amount is, and what your 20 percent share will be. Some suppliers will write this down before you proceed. If a supplier charges well above the Medicare-approved amount, you may want to get a second opinion or ask your doctor for another referral.

Repairs and adjustments are covered separately. If your prosthetic breaks or needs adjustment, your supplier can submit a repair claim to Medicare. You will again pay 20 percent of the approved repair cost. Routine maintenance — like replacement socks or liners — may or may not be covered depending on the specific item and how often you need it replaced. Ask your supplier what maintenance items are covered under your plan.

Replacement prosthetics and when Medicare will pay for a new one

Medicare does not cover a new prosthetic straightforward because you want an upgrade or a newer model. However, Medicare will cover a replacement device in two situations: when your existing prosthetic cannot be repaired and continued use would be unsafe or ineffective, or when your medical condition has changed significantly and your current device no longer meets your needs.

The time between replacements matters. Medicare typically expects a prosthetic to last three to five years depending on the type and how heavily you use it. If you request a replacement before that window, Medicare will likely deny the claim unless you can show that the device is irreparably damaged or that your medical needs have genuinely changed — for example, if you have lost additional function or gained significant weight that changes how the device fits.

Your doctor will need to document the reason for replacement in the same way they documented the original order. If Medicare denies a replacement claim, ask your supplier to help you appeal. Provide medical records showing the damage to the current device or the change in your medical condition. Appeals can take several weeks but are often successful when the medical justification is clear.

Medicare Advantage and prosthetic coverage

If you have a Medicare Advantage plan (Part C) instead of Original Medicare, your coverage for prosthetics may be different. Medicare Advantage plans must cover at least what Original Medicare covers, but many plans offer additional benefits or lower out-of-pocket costs. Some plans cover prosthetics with no deductible or a lower copay than the standard 20 percent.

Check your plan's coverage documents or call the plan directly to learn what prosthetics are covered and what you will pay. If your plan's coverage is limited, you have the right to switch to Original Medicare during the annual enrollment period (October 15 to December 7 each year). If you are already enrolled in a Medicare Advantage plan and need a prosthetic urgently, contact your plan's customer service before seeing a supplier — they can tell you which suppliers are in-network and what your cost will be.

Common reasons Medicare denies prosthetic claims

Medicare denies prosthetic claims most often because the doctor's order does not clearly state that the device is medically necessary, or because the supplier is not enrolled in Medicare. A second common reason is that the prosthetic is deemed experimental or not yet approved by the FDA. A third is that the claim is for a replacement device and Medicare believes the existing device can still be repaired.

If your claim is denied, you will receive a notice called an "Explanation of Benefits" that explains the reason. Read it carefully. If you disagree with the denial, you can file an appeal. Your prosthetics supplier can often help with this — they have experience appealing denials and know what additional medical evidence Medicare typically wants to see. Appeals must be filed within 180 days of the denial notice.

Frequently Asked Questions

Does Medicare cover prosthetics for both legs or both arms?

Yes. Medicare covers prosthetics for any limb or body part where function has been lost due to amputation, illness, or injury. If you have lost both legs or both arms, Medicare will cover prosthetics for both, though each device is reviewed separately and must meet the medical necessity standard.

Will Medicare pay for a prosthetic if I have not had an amputation?

Yes, but only if a doctor can document that you have lost significant function and that a prosthetic will restore that function. This can happen with severe nerve damage, paralysis, or congenital conditions. The key is medical necessity, not the cause of the loss.

What happens if my prosthetics supplier is not enrolled in Medicare?

You can still receive the prosthetic, but you will have to pay the full cost upfront and then submit a claim to Medicare yourself. This is more complicated and slower than having an enrolled supplier submit the claim. It is better to find an enrolled supplier before you proceed.

Can I choose any prosthetics supplier, or does Medicare limit my options?

You can choose any supplier who is enrolled in Medicare. There is no "network" restriction like you might have with a Medicare Advantage plan. Use the Medicare supplier search tool or ask your doctor for referrals to find enrolled suppliers in your area.

Does Medicare cover prosthetics for children?

Yes. Children covered by Medicare (usually through disability) have the same prosthetic coverage as adults. However, children may need more frequent replacements as they grow, and Medicare has specific rules about how often replacement is covered. Ask your child's doctor and supplier about the replacement schedule for pediatric prosthetics.