Key takeaways
- Total billed charges for a knee replacement in the United States typically land somewhere around est. $18,000 to $70,000 depending overwhelmingly on the setting — surgery centre, hospital outpatient, or hospital inpatient — while what an insured patient actually pays is usually capped by their plan and more often falls in the est. $2,000 to $9,000 band.
- The number you are quoted is almost never the whole number. Surgeon, facility and anesthesia bill separately, and imaging, medical clearance, equipment and physical therapy sit outside all three.
- If you run an orthopedic or sports medicine practice, I also flag what these numbers mean for how you present pricing — see “What this means if you run an orthopedic practice” near the end.
This page is general cost information, not medical or financial advice. Every figure is an estimate and a starting point for a conversation with your surgeon’s office and your insurer. Costs vary by region, insurer, facility and the specifics of your case.
What a knee replacement is, in billing terms
A knee replacement — arthroplasty — resurfaces the damaged joint with metal and plastic components. A total replacement addresses the whole joint; a partial (unicompartmental) replacement addresses one compartment. Which is appropriate is a clinical judgement between you and your surgeon, and nothing here is a view on that.
What matters for cost is that the procedure has moved. For decades it was an inpatient operation with a multi-day stay. A substantial share is now outpatient, in a hospital outpatient department or a freestanding surgery centre, and the setting is the largest single driver of what appears on your bill.
The short answer: typical price ranges
- Hospital inpatient, total billed charges: est. $30,000 to $70,000, higher in expensive metros or where the stay is extended.
- Hospital outpatient department: est. $22,000 to $50,000.
- Ambulatory surgery centre: est. $18,000 to $35,000.
- Self-pay or bundled cash price, where offered: est. $15,000 to $32,000, most often at a surgery centre.
- Insured patient out-of-pocket: est. $2,000 to $9,000, frequently equal to whatever remains of your deductible plus coinsurance up to your out-of-pocket maximum.
Billed charges and paid amounts are different animals. Insurers pay contracted rates far below billed charges, and the number that matters is your share of the allowed amount — not the figure at the top of the statement.
Partial versus total, and what it does to the price
A partial replacement generally involves less implant, shorter operative time and often a shorter stay, so its billed total commonly sits below a total — est. $4,000 to $12,000 lower is a plausible spread, varying widely by facility.
None of that makes it the better buy. Whether a partial is even an option depends on the pattern of damage in your knee, decided from imaging and examination rather than a price list. If it is on the table clinically, it is fair to ask what the cost difference looks like under your plan.
Three bills, three businesses
When a surgeon’s office quotes “the cost of the surgery”, they usually mean their own professional fee. Estimates, all rough:
- Surgeon’s fee: est. $2,000 to $7,000 billed, less as a contracted in-network rate.
- Facility fee: est. $12,000 to $55,000. This is where the setting difference lives.
- Anesthesia: est. $1,000 to $3,500, billed by a separate group.
The surgeon’s office generally cannot tell you what the facility or the anesthesia group will bill, because those are separate entities with their own contracts. So the question is not “what does the surgery cost” but “which providers will bill me, and can I get an estimate from each”. US hospitals are required to publish standard charges and offer patient estimator tools; they are imperfect, but a facility that offers no estimate at all is telling you something.
The implant is inside the facility fee
The prosthesis itself is a real cost — est. $3,000 to $9,000 to the facility depending on the system, the materials and whether patient-specific instrumentation or robotic assistance is used. You will rarely see it as its own patient-facing line, because it is bundled into the facility charge.
This matters twice over. It explains part of why facility fees differ between hospitals — implant contracts differ. And if a newer system or robotic assistance is planned, it is reasonable to ask whether that changes the facility fee and whether your plan treats it differently. Whether it is clinically appropriate is your surgeon’s call.
Surgery centre, hospital outpatient, hospital inpatient
The same operation in three settings produces three very different facility charges. A freestanding ambulatory surgery centre carries the least overhead. A hospital outpatient department prices in the emergency, inpatient and around-the-clock capability the institution maintains, whether or not your case uses it. A hospital inpatient stay adds room, board and nursing days on top.
Differences of est. $10,000 to $25,000 in the facility component alone are common between an ambulatory surgery centre and a hospital inpatient episode in the same city.
Setting is not a free choice. Your medical history, home support and the complexity of your knee all bear on where it is safe to operate, and that judgement belongs to your surgeon and anesthesiologist. But where more than one setting is genuinely appropriate, it is the question with the largest number attached to it.
Medicare, commercial insurance and the difference between them
Knee replacement is one of the highest-volume Medicare procedures, so a large share of patients are on Medicare rather than a commercial plan, and the mechanics differ.
Under Original Medicare, an inpatient admission runs through Part A and its deductible per benefit period, reset annually and recently in the est. $1,600 to $1,700 range. An outpatient procedure runs through Part B: the annual Part B deductible plus 20% coinsurance, with no statutory out-of-pocket cap, which is why supplemental (Medigap) coverage matters so much. Whether your case is billed inpatient or outpatient is consequential, and it is not always the same as whether you sleep at the hospital.
Under a Medicare Advantage plan, you have a plan out-of-pocket maximum, a network, and usually prior authorisation. Under a commercial plan, you have a deductible, coinsurance and an out-of-pocket maximum, and prior authorisation is standard for this procedure.
In-network, out-of-network, and the bill you never chose
In-network means a contracted rate; out-of-network means your plan pays less, or nothing. The trap in orthopedic surgery is receiving a bill from a provider you never selected — most often anesthesia, sometimes an assistant surgeon, radiology or pathology — even when the surgeon and facility are both in-network.
US federal protections under the No Surprises Act restrict balance billing in many of these situations. They are not universal and they interact with your plan type, so ask in advance and in writing: is the facility in-network, is the surgeon in-network, is the anesthesia group covering that facility in-network, and will any out-of-network provider be involved. A knee replacement is a scheduled procedure, which means you have time to ask.
Deductibles, coinsurance and the out-of-pocket maximum
Most cost confusion is about plan mechanics rather than prices. Your deductible is what you pay before the plan shares — if it is est. $3,000 and untouched, the first $3,000 of allowed charges is yours. Your coinsurance is the percentage after that, commonly 10% to 30% in-network. Your out-of-pocket maximum is the ceiling; once reached, covered in-network care is paid by the plan for the rest of the year. That in-network maximum is capped under US rules, and in recent years the individual cap has sat in the est. $9,000 to $10,000 range, with most plans well below it.
Practically: for a procedure this size, an insured patient often pays whatever remains of the deductible plus coinsurance until the maximum is reached. So “what will I pay” depends heavily on what else you have had done this plan year. That is a fair thing to factor into timing an elective procedure — but it should never override the clinical picture, and I am not a financial adviser.
Bundled payments and self-pay pricing
Knee replacement is one of the most commonly bundled procedures in the US, both in Medicare episode-based programmes and in commercial direct-contracting arrangements. Some employers have centre-of-excellence programmes that cover the procedure at a designated facility at reduced or zero cost-sharing, sometimes with travel included. If your employer offers one, it is worth reading before you schedule.
For self-pay patients, some surgery centres publish a bundled cash price — est. $15,000 to $32,000 covering surgeon, facility, anesthesia and the implant. A genuine bundle is far easier to compare than a stack of estimates. Read the exclusions: pre-operative imaging, clearance, equipment and all physical therapy are commonly outside it, and so is the cost of managing a complication.
Pre-operative costs people forget
The pre-operative workup is billed separately: X-rays, sometimes an MRI or CT (est. $400 to $3,000, depending heavily on setting), blood work, an EKG, and medical or cardiac clearance if your history calls for it. Some surgeons request dental clearance. Where you have imaging done makes a real difference if you have an unmet deductible — freestanding imaging centres typically sit well below hospital radiology for the same study.
Post-operative costs, which are the ones that surprise people
- Physical therapy: est. $75 to $250 per visit, over a course your therapist and plan agree. This is the largest post-operative line for most people and the one most often missing from a surgical estimate.
- Home health visits, where ordered, billed per visit.
- Equipment: walker, raised toilet seat, shower chair, ice therapy unit — est. $50 to $600 in total, more if a continuous passive motion device is prescribed and not covered.
- Skilled nursing or inpatient rehabilitation, if that is the discharge plan, which is a separate and substantial episode of care with its own coverage rules.
- Prescriptions, including anticoagulation, which varies enormously by drug and formulary.
What a quoted price usually excludes
- The surgeon’s fee, if the quote came from the facility — and the facility fee, if it came from the surgeon.
- Anesthesia.
- Pre-operative imaging, labs and medical clearance.
- The initial consultation and follow-ups outside the global period.
- Equipment, bracing and prescriptions.
- All physical therapy, home health and any post-acute stay.
- Management of a complication or an unplanned readmission.
- The second knee, if both are planned.
Questions worth asking before you schedule
- Which providers will bill me, and can I have an estimate from each?
- Which setting is planned, and is another setting appropriate for me?
- Is the facility in-network? Is the anesthesia group covering it in-network?
- What CPT codes will you bill? (Your insurer can estimate far better with those.)
- Will this be billed as inpatient or outpatient, and what does that mean for my coverage?
- Is prior authorisation done, and do I have it in writing?
- Does the surgical fee include a global period, and what does it cover?
- What is the discharge plan — home, home health, or a facility — and what does each cost me?
- How many therapy visits does my plan authorise, and what is my share per visit?
- Is there a self-pay or bundled price, and what does it exclude?
- Does my employer have a centre-of-excellence programme for this?
- Is there an interest-free payment plan?
When the cheaper option is the wrong choice
There is a floor below which price shopping stops being sensible. A surgeon’s volume with this procedure, whether the setting suits your medical history, whether you can actually get to therapy two or three times a week, and whether the whole episode is in-network all matter more than a few thousand dollars of list price.
Two specific traps. Travelling for a lower price can work and centre-of-excellence programmes are built on exactly that — but rehabilitation is local and prolonged, and a problem that needs to be seen quickly is harder to manage at distance, so ask who handles follow-up locally before you commit. And an out-of-network facility with an attractive cash price can cost more in total than an in-network one once your plan’s share is counted.
I am a marketing consultant, not a clinician. I will not tell you whether to have the operation, which implant to have, or which surgeon to see. What I can say is that the questions above are the ones that change the number.
What this means if you run an orthopedic practice
The other side of the desk. Everything above describes what a prospective patient is doing on their phone, usually months before they call you.
Cost is the last unanswered question, and almost nobody answers it. A patient weighing a knee replacement has already read about the procedure a dozen times. What they cannot find is what it will cost them. Every page says “costs vary” and stops there. The practice that explains the structure — three bills, the setting difference, Part A versus Part B, deductible mechanics, what a quote excludes — reads as the practice that knows what it is doing, before a single clinical claim is made.
Ranges win the call. “Call for pricing” loses it. The standard objection is that you cannot publish a price because it depends on the plan, the setting and the case. That is true, and it is precisely the argument for publishing a range with the drivers explained. You are not committing to a number; you are showing that you understand the number. Across the cost pages I have built, the version that says “here is the range and here is what moves it” produces more enquiries than the version that says “contact us”, because the second reads as a refusal to answer.
The front desk decides whether the page pays. A cost page generates cost calls, and most practices are not ready for them. “We can’t tell you until we verify benefits” ends the conversation. “Here is how the billing usually breaks down, here is what we would check with your plan, and someone will call you back today with an estimate” books the appointment. Write the script before you publish the page.
What a knee replacement cost page should contain. Component ranges rather than one total. The setting comparison in plain language. Medicare mechanics separated from commercial, because a large share of this audience is on Medicare and generic content ignores that. An explicit exclusions list. The post-operative costs, because that is where trust is either earned or lost. Your accepted plans and a clear route to a benefits check. And nothing that promises an outcome — no success rates, no recovery timelines, no “back to golf by” claims. In a regulated specialty the advertising constraints are part of the product, and a page that overreaches attracts the wrong kind of attention.
That is the work I do: the cost, procedure and condition pages that surgical practices rank for, written to the advertising rules that apply to physicians rather than around them. More on how it runs for a sports medicine practice and for a broader orthopedic group. I have run Sprout Sage Solutions from Chandigarh since 2020, I lead every account personally with a team of 17 behind me, and what I can substantiate is public: 450+ websites shipped.
Related breakdowns here: ACL reconstruction cost and PRP injection cost versus surgery.
Frequently asked questions
How much does a knee replacement cost with Medicare?
It depends on whether the case is billed as inpatient or outpatient. Inpatient runs through Part A and its per-benefit-period deductible, recently in the est. $1,600 to $1,700 range. Outpatient runs through Part B, generally the annual deductible plus 20% coinsurance with no statutory cap — which is why supplemental coverage matters. Medicare Advantage plans have their own out-of-pocket maximum and network. Confirm with your plan, not with an article.
How much does a knee replacement cost without insurance?
Where a bundled self-pay price is offered, est. $15,000 to $32,000 is a common band, usually covering surgeon, facility, anesthesia and implant. Without a bundle, separate billed charges more often total est. $30,000 to $70,000, though uninsured patients can frequently negotiate and non-profit US hospitals are required to have financial assistance policies.
Why is one hospital so much more expensive than another?
Facility fees reflect the institution’s whole cost structure, its implant contracts and its negotiated rates — not the difficulty of your case. Two hospitals in the same city can differ by tens of thousands in billed charges for the same procedure. What you pay depends on your plan’s contracted rate with each, so ask your insurer to compare in-network facilities rather than comparing list prices.
Is a partial knee replacement cheaper?
Usually somewhat — less implant, less operative time, more often outpatient — and est. $4,000 to $12,000 lower in billed charges is a plausible spread. But whether a partial replacement is even appropriate depends on the pattern of damage in your knee. That is a clinical decision, not a budget one.
Does insurance cover knee replacement?
It is generally treated as medically necessary and covered by most US plans subject to deductible, coinsurance and out-of-pocket maximum, almost always with prior authorisation. Many plans require documented conservative treatment first. Coverage is not the same as free — get the authorisation in writing and confirm your share before the date.
How much will physical therapy add?
Therapy is billed per visit at roughly est. $75 to $250, over a course rather than a few appointments, and plans commonly cap authorised visits per year. Check the cap, your per-visit share, and whether the clinic you are referred to is in-network. This is the single most underestimated line in the whole episode.
Can I get both knees done at once to save money?
Bilateral replacement can reduce total facility and anesthesia cost compared with two separate episodes, but it is a materially different operation with a different risk profile and a different recovery, and it is not appropriate for everyone. That is entirely a conversation for your surgeon. Do not let a cost comparison drive it.
What if I get a bill I was not expecting?
Ask for an itemised bill and check it against your explanation of benefits before paying. Errors and duplicated lines are common. If the bill came from an out-of-network provider at an in-network facility, ask whether federal surprise-billing protections apply. Ask the facility about financial assistance and interest-free payment plans — both exist more often than patients realise.
If you run the practice, let’s talk about your cost pages
If you are the owner or practice manager who read past the patient sections: the call is free and there is no deck. I look at your site and your search data live and tell you which cost and procedure searches your market runs that you do not appear for, whether or not you hire me.
Book the free 30-minute call, or call me directly at +91 97297 12388.
Once more, plainly: this page is general cost information, not medical or financial advice. All figures are estimates and vary by region, insurer and facility.
