Medicare covers robotic knee replacement the same way it covers traditional knee replacement — as long as your surgery happens in a hospital or outpatient surgical center and your doctor determines it is medically necessary
Medicare Part B pays 80% of the approved amount for knee replacement surgery after you meet your deductible. The remaining 20% is your responsibility, unless you have a Medigap or Medicare Advantage plan that covers it. Robotic-assisted surgery does not change this coverage structure. What matters to Medicare is whether the surgery itself is necessary, not the technology your surgeon uses to perform it.
The catch is that Medicare does not separately reimburse your surgeon for using robotic technology. Your surgeon's fee is the same whether they use traditional instruments or a robotic system. Some surgeons absorb the robotic equipment cost into their practice overhead. Others may charge you an out-of-pocket fee for the robotic component — this is where you need to ask questions before surgery.
Key Takeaways
- Medicare Part B covers the knee replacement surgery itself at 80% of the approved amount, regardless of whether robotic information is used.
- You pay 20% of the Medicare-approved surgical fee, plus your Part B deductible if you have not met it for the year.
- Some surgeons charge a separate patient fee for robotic technology that Medicare does not cover — ask your surgeon's office for this cost in writing before scheduling.
- Hospital or facility fees are billed separately and follow the same 80/20 split as the surgical fee.
- A Medigap plan (Plan C, D, F, G, M, or N) or Medicare Advantage plan may cover your 20% coinsurance, depending on the plan.
What your out-of-pocket costs actually are
Your total cost depends on three separate bills: the surgeon's fee, the facility fee (hospital or surgical center), and any robotic technology fee your surgeon charges.
For the surgeon and facility, Medicare sets an approved amount. You pay 20% of that approved amount after your deductible. If your surgeon charges more than Medicare's approved amount, you may owe the difference — but only if they are not a Medicare-participating provider. Most surgeons who perform knee replacements are participating providers and agree to accept Medicare's approved amount as full payment.
The robotic fee is the variable. Some surgeons charge $1,000 to $3,000 for robotic-assisted knee replacement, though this amount varies widely by region and surgeon. This fee is typically not covered by Medicare and is your responsibility. Call your surgeon's office and ask: "If I choose robotic-assisted knee replacement, what is the patient cost for the robotic technology?" Get the answer in writing.
How to find out your surgeon's robotic technology fee
Do not assume your surgeon uses robotic information or charges for it. Some surgeons have invested in robotic systems and offer it as standard; others do not use it at all. Before your first consultation, call the surgeon's office and ask whether they offer robotic-assisted knee replacement and whether there is a patient cost.
During your consultation, ask your surgeon three specific questions: (1) Do you recommend robotic information for my knee replacement, and why? (2) What is the cost to me if I choose robotic information? (3) Will my insurance cover any of that cost? Write down the answers. If your surgeon recommends robotic information but cannot explain why it benefits your specific situation, ask for a second opinion.
If you have a Medigap or Medicare Advantage plan, call your plan's customer service line and ask whether they cover robotic technology fees. Some plans do; most do not. Your plan documents should list what is and is not covered. If you cannot find the answer in your documents, ask the plan directly.
Medicare Advantage plans and robotic knee replacement
If you are enrolled in a Medicare Advantage plan, your coverage for knee replacement surgery works differently than Original Medicare. Medicare Advantage plans must cover everything Original Medicare covers, but they set their own rules about deductibles, copays, and coinsurance.
Some Medicare Advantage plans charge a copay for surgery instead of coinsurance. Others require you to use in-network surgeons. A few plans may cover robotic technology fees as part of their surgical benefit, though this is uncommon. You must check your specific plan's documents or call customer service to know what you will owe.
If you are thinking about switching to a Medicare Advantage plan because it might cover robotic technology, be aware that you can only change plans during the annual enrollment period (October 15 to December 7) or if you have a may have access to life event. If your knee surgery is scheduled soon, you may not have time to switch.
When Medicare does not cover knee replacement
Medicare covers knee replacement when your doctor documents that you have severe arthritis or injury that limits your ability to walk or perform daily activities, and that other treatments (physical therapy, injections, medication) have not worked or are not appropriate for you. If your surgery is purely elective — for example, to improve athletic performance or cosmetic appearance — Medicare will not cover it.
Your surgeon's office should verify coverage before surgery. This is called a pre-authorization or pre-information. Ask your surgeon's billing department to submit a pre-authorization request to Medicare at least two weeks before your scheduled surgery. Medicare will tell you in writing whether the surgery is covered and what your cost will be.
Hospital versus outpatient surgical center
Knee replacement can happen in a hospital outpatient department or in an ambulatory surgical center (ASC). Medicare covers both settings at 80% of the approved amount. The facility fee differs between settings — hospitals typically charge more than surgical centers, so your 20% coinsurance will be higher at a hospital.
Ask your surgeon where the surgery will take place. If it is at a hospital, ask whether the same surgery could be done at an outpatient surgical center and what the cost difference would be. Some surgeons have relationships with both types of facilities and can offer you a choice. This is one way to lower your out-of-pocket cost.
What to ask your doctor before scheduling
Before you schedule robotic knee replacement, write down these questions and bring them to your appointment:
- Do you recommend robotic information for my knee, and what specific benefit will it provide for my situation?
- What is the total cost to me for robotic-assisted knee replacement, including the surgeon fee, facility fee, and any robotic technology fee?
- What is the total cost if I choose traditional (non-robotic) knee replacement?
- Where will the surgery take place — a hospital or surgical center?
- Will your office submit a pre-authorization to Medicare before surgery?
- If I have a Medigap or Medicare Advantage plan, will you contact my plan to verify what they cover?
Frequently Asked Questions
Does Medicare cover the cost of the robotic equipment itself?
No. Medicare reimburses your surgeon for performing the knee replacement surgery, not for the robotic system they use. If your surgeon charges you separately for robotic technology, that is a patient fee, not a Medicare-covered service. Some surgeons include this cost in their overhead; others pass it to patients who choose robotic information.
Will my Medigap plan cover the robotic technology fee?
Most Medigap plans do not cover robotic technology fees because Medicare does not cover them. However, some plans may cover it if your surgeon bills it as part of the surgical service. Call your Medigap plan's customer service line and ask specifically whether they cover robotic-assisted knee replacement fees. Get the answer in writing.
What if my surgeon's office cannot tell me the robotic fee before surgery?
Ask them to provide it in writing before you sign any consent forms. Do not schedule surgery until you have a clear written estimate of all costs, including the robotic fee if applicable. If the office cannot or will not provide this, consider consulting another surgeon.
Can I appeal if Medicare denies coverage for my knee replacement?
Yes. If Medicare denies your surgery as not medically necessary, your surgeon's office can file an appeal on your behalf. You have the right to request a peer-to-peer review, where your surgeon speaks directly with a Medicare medical reviewer. Ask your surgeon's office about the appeal process if your pre-authorization is denied.
Does it matter if my surgeon is in-network for my Medicare Advantage plan?
Yes. If you have a Medicare Advantage plan and use an out-of-network surgeon, you may owe significantly more out-of-pocket. Some plans do not cover out-of-network surgery at all except in emergencies. Check your plan documents or call customer service to confirm your surgeon is in-network before scheduling.