This is a patient demand report for orthopedic practice owners and marketing leads, especially practices that have bought a surgical robot or are weighing one. It shows what patients pay for robotic and traditional knee replacement, what Medicare pays your practice, what the evidence patients read says, and what they find when they search before they call. The practice-side facts come first; the patient detail below is the evidence behind them.
For practice owners: what this search looks like from your side
Some facts, side by side.
When researchers reviewed 50 surgeon websites across the five largest US markets, they found claims about robotic knee replacement “not definitively supported” by the literature, and 68% of the sites named a specific robot brand. (Rinehart et al., Arthroplasty Today, 2024)
In a survey of 588 members of the public, 69% believed robotic surgery gives better results, and 49% said they would choose a low-volume surgeon using a robot over a high-volume surgeon operating by hand. (Pagani et al., Journal of Arthroplasty, 2021)
A 2022 cost-effectiveness model put the average robot acquisition and use cost at $706,250 and estimated a total cost per case of $92,823 at 10 cases a year, falling to $25,730 at 200, against $25,113 for a traditional knee. It found the robot cost-effective above about 24 cases a year. (Rajan et al., JAAOS, 2022) In that model, every added case spreads the same fixed cost.
For insured patients, the claim is the same CPT 27447 with or without the robot, and commercial insurers generally do not pay extra for the robot’s own code.
Across 12 randomized trials, the robot improved implant alignment but made little to no difference to how patients rated their knee afterward.
When I audited one orthopedic practice’s Google Ads account, 92% of the spend was going to a campaign that had produced zero appointments.
What those mean together for your practice is for you to work out.
If you want a second opinion on how your robotic knee pages and patient acquisition are set up, book a 30-minute call. I will look at your site and your market before we talk. You can also read what a page like this is worth to an orthopedic practice or how to get more orthopedic patients.
What patients pay
According to CareCredit’s cost guide, a total knee replacement costs about $32,570 on average, with a typical range of $14,188 to $49,016. The same guide puts robotic-assisted knee replacement at roughly $15,607 to $53,918, and says the robotic version is typically about 10% more expensive because of extra operating room supplies and staff time. (CareCredit, November 2023)
That 10% is the list-price view. What a patient actually pays depends mostly on their insurance, their deductible and where the surgery happens.
CareCredit’s figures show how much the setting matters: about $41,620 on average in an inpatient facility, against $25,100 in an outpatient one. The gap between a hospital stay and an outpatient surgery center is far bigger than the gap between robotic and traditional. Across the cost data, the choice of surgeon and facility moves a patient’s bill far more than the robot does. For the full breakdown of the traditional procedure, see my page on knee replacement cost.
For a self-pay patient, any robotic premium is the facility’s own pricing choice, not something an insurer sets.
What Medicare pays your practice
For Medicare, a knee replacement is billed as CPT code 27447 whether or not a robot is used. For 2026, Medicare’s national rate for that code is about $13,116 in a hospital outpatient department and $9,393 in an ambulatory surgery center, according to a summary of the final rules prepared for the American Association of Hip and Knee Surgeons. (AAHKS summary of 2026 OPPS and ASC final rules)
There is a separate code for robot use, S2900, but commercial insurers generally do not pay extra for it. UnitedHealthcare’s reimbursement policy, for example, states that S2900 is not separately reimbursable. (UnitedHealthcare robotic-assisted surgery policy)
From the patient’s side, the robot usually does not change what their plan pays the surgeon. An insured patient’s share depends on their deductible and coinsurance, not on the tool.
What the evidence patients read says
Surgery cost, time in the operating room, and hospital stay
Here is how the two compare across the largest studies I could find.
| Measure | What the studies found |
|---|---|
| Hospital cost per stay | About $2,400 more for robotic, on average, in 17,249 robotic vs 541,122 conventional cases (UT Southwestern, 2024) |
| 90-day episode spending, Medicare | $13,676 robotic vs $14,263 traditional (Shah et al., 2021) |
| 90-day hospital cost, 67,913 patients | $17,932 on average, equivalent for both (Alton et al., 2023) |
| Length of stay | 1.9 vs 2.3 days in favour of robotic (Shah et al., 2021) |
| Patient-reported outcomes | Little to no difference across 12 randomized trials (Acta Orthopaedica, 2023) |
The UT Southwestern team, using the National Inpatient Sample for 2016 to 2019, found robotic procedures cost about $2,400 more on average, with hospital stays nearly half a day shorter and fewer complications such as infections and excessive blood loss. (UT Southwestern, May 2024)
So the surgery itself tends to cost a little more. What happens after it is where the picture changes.
The 90-day bill
A knee replacement does not end when the patient leaves the operating room. Rehab, any stay in a skilled nursing facility and readmissions all land in the same 90-day window.
A 2021 study of 198,371 Medicare patients found risk-adjusted 90-day episode spending of $14,263 for traditional knee replacement against $13,676 for robotic, with a shorter hospital stay and fewer complications in the robotic group. (Shah et al., Surgery, 2021)
A larger commercial database study matched 16,714 robotic patients with 51,199 traditional ones and found average 90-day hospital costs of $17,932 that were essentially equal between the two. (Alton et al., Expert Review of Medical Devices, 2023)
Read together, these studies say the robot is unlikely to raise the total 90-day cost much, and in some settings it lowers it, mainly through shorter hospital stays.
Outcomes in the randomized trials
This is the finding most robotic surgery marketing leaves out. A 2023 systematic review of 12 randomized controlled trials, covering 2,200 patients, found robotic surgery “probably results in little to no effect” on patient-reported outcomes such as pain and function scores, while it did improve how accurately the implant was aligned. (Acta Orthopaedica, 2023)
Better alignment is real and measurable. Whether it translates into a knee that feels better years later is still being studied. Precision and alignment have good evidence behind them; better long-term function does not yet.
Who patients are
Many patients already lean toward the robot. In the survey of 588 members of the public cited above, 69% believed robotic surgery gives better results, and 49% would pick a low-volume surgeon with a robot over a high-volume surgeon operating by hand. (Pagani et al., Journal of Arthroplasty, 2021)
For insured patients, the same-code billing above shapes what they pay. For self-pay patients, the facility’s own price does.
Some patients comparing robotic and traditional surgery are candidates for a partial replacement instead, which for some costs less. I cover that comparison in partial vs total knee replacement cost.
Questions patients ask before they book
These are the questions your page and your front desk need to answer.
- How many knee replacements does this surgeon do each year, and how many with the robot? A good page shows annual case volume, split by robotic and traditional.
- Is the robot priced differently? A good page says whether insured patients pay anything extra, which is usually not, and gives self-pay patients a written total.
- Where will the surgery happen? A good page names the setting, because a surgery center or outpatient setting can cut the bill more than any technology choice.
- What is included in the price? A good page lists the surgeon, facility, anesthesia, implant, imaging and physical therapy, and says which are billed separately.
- Is a partial replacement an option instead? A good page explains who the surgeon considers for it and links to the cost comparison.
What a page that wins this search includes
- The price answer before the patient asks. Since the claim is the same 27447 for insured patients, “the robot does not change what insurance pays” is often a true and reassuring sentence. Put it on the robotic surgery page, along with a clear cash price if you offer self-pay.
- The evidence stated honestly. Alignment gains, and little to no difference in patient-reported outcomes so far. Many surgeon sites make claims the literature does not definitively support, so a page that states the evidence plainly reads as more credible to exactly the patients who are comparing surgeons carefully.
- Your own record next to the technology. Show your case volume and outcomes beside the robot, so patients choose you for both.
- The 90-day picture, not only the operating room. Shorter stays are where the robot’s cost case is strongest, so show the whole episode.
- Every study linked. Linked evidence is what separates a report from a brochure.
Frequently asked questions
Is robotic knee replacement more expensive than traditional? The surgery itself tends to cost the hospital a little more, about $2,400 on average in one national study. Across the full 90 days, several large studies found the total roughly equal or slightly lower for robotic, mainly because of shorter hospital stays.
Does Medicare cover robotic knee replacement, and do patients pay more? Medicare pays for a knee replacement under the same code whether or not a robot is used, so an insured patient usually does not pay more because of the robot. The patient’s share depends on their deductible and coinsurance.
Is robotic knee replacement worth the extra cost? It improves implant alignment, but randomized trials show little to no difference in how patients rate their pain and function. The surgeon’s experience and the setting matter more to the outcome and the bill.
Does robotic knee surgery mean a shorter hospital stay? Usually slightly shorter. One Medicare study found 1.9 days for robotic against 2.3 days for traditional.
How much does a robotic knee replacement cost without insurance? One cost guide puts it at roughly $15,607 to $53,918. A comparable self-pay quote is a written total that includes the surgeon, facility, anesthesia, implant and physical therapy.
