CMS calls hip and knee replacement the most common surgeries Medicare beneficiaries receive, and knee replacement is the more common of the two. It is also the procedure where American price variation gets genuinely absurd. A nonprofit watchdog reviewing posted hospital prices in a single metro area found the same total knee replacement listed at $26,324 at one hospital and $242,121 at another.
That is not because one operation is nine times better. It is because a hospital’s posted self-pay price starts from its chargemaster, while a surgery center’s cash bundle starts from what the surgery actually costs to deliver. This guide separates the two, using published 2026 cash prices and 2024 CMS data released in April 2026, so you can tell which kind of number someone is quoting you.
What Does a Knee Replacement Cost Without Insurance?
A genuine all-in cash bundle runs about $15,800 to $43,000 as of August 2026. Surgery centers that publish their rates are clustered near the bottom, between $15,794 and $17,679.
| Price you might be quoted | Low | Typical | High |
|---|---|---|---|
| Surgeon fee only, Medicare-allowed (CPT 27447) | n/a | $1,487 | n/a |
| Surgeon fee only, average billed charge | n/a | $8,878 | n/a |
| Average cash price at an ambulatory surgery center | n/a | $13,734 | n/a |
| Average cash price at an outpatient hospital | n/a | $18,096 | n/a |
| All-in cash bundle at a surgery center publishing rates | $15,794 | n/a | $17,679 |
| All-in cash bundle on the MDsave marketplace | $17,526 | $26,016 | $35,750 |
| MDsave’s estimated national average, outpatient knee | n/a | $42,941 | n/a |
| Posted hospital self-pay price, Cleveland area (2024) | $26,324 | n/a | $242,121 |
| Hospital billed charge, no major complications (DRG 470) | n/a | $93,184 | n/a |
| Hospital billed charge, with major complications (DRG 469) | n/a | $149,677 | n/a |
| What Medicare actually pays a hospital (DRG 470) | n/a | $17,364 | n/a |
The surgery-center bundles come from two centers that publish rates openly. Cedar Orthopaedic Surgery Center in Utah lists total knee arthroplasty at $15,794, and states that its cash prices include the surgeon’s fee, the facility fee, the joint implants, anesthesia, and the physical therapy for that date of service. Surgery Center of Oklahoma lists $17,679, and its bundle adds five days of home health visits, 30 days of physical therapy, pain and anti-clotting drugs, and durable medical equipment.
The hospital charge figures come from the CMS Medicare Inpatient Hospitals dataset for the 2024 data year. Across 64,419 national discharges under MS-DRG 470, the uncomplicated hip and knee replacement stay, hospitals submitted an average charge of $93,184 and received an average total payment of $17,364. The charge is roughly five times the collection.
The Six Prices People Confuse
The surgeon fee. The orthopaedic surgeon’s professional charge alone. In 2024 CMS data, 20,171 providers billed CPT 27447 in a facility setting, averaging $8,878 submitted and $1,487 allowed by Medicare. If a number sounds too small to be a knee replacement, this is usually what it is.
The facility fee. Operating room, nursing, recovery, and supplies. This is the line that separates a $15,794 bundle from a $93,184 hospital charge, and it is the reason facility choice matters more than surgeon choice for your wallet.
Anesthesia. Typically billed by a separate group at a hospital, which is how a second envelope shows up weeks later. Every bundle in the table folds it in.
The implant. The most common hidden exclusion. Cedar Orthopaedic includes implants and says it is the only surgery center in Utah that does. Surgery Center of Oklahoma’s knee FAQ states the bundle does not cover implants, overnight stays, pre-op consults, advanced imaging, or treatment of rare complications. A $2,000 gap between two quotes often disappears once you settle this.
The all-in bundle. One prepaid number covering surgeon, facility, anesthesia, and routine follow-up. This is the only figure worth comparing across providers.
The 90-day episode. Medicare’s Comprehensive Care for Joint Replacement model defined a joint replacement episode as the procedure plus all related Part A and Part B care for 90 days after discharge, including physical therapy and other rehabilitation. Almost no surgical quote covers that entire window.
What Drives the Price
Where the surgery happens
CMS removed total knee arthroplasty from the Medicare inpatient-only list in calendar year 2018, which is why outpatient knee replacement in an ambulatory surgery center is now standard for healthy patients rather than an exception. Sidecar Health’s cash-price data shows the effect: an average of $13,734 at a surgery center versus $18,096 at an outpatient hospital, about a 24 percent difference before you even reach a hospital’s inpatient chargemaster.
Which hospital, specifically
Within hospitals the variation is larger than between settings. The PIRG Education Fund’s review of Cleveland-area posted prices, collected between February and April 2024, found self-pay prices ranging from $26,324 at MetroHealth to $242,121 at Summa Health locations. Inside a single system, University Hospitals Lake West posted $38,867.65 while UH Portage posted $75,593.53, nearly double, and neither of those included physician costs. Four Cleveland Clinic locations differed by about $9,000. Shopping within one system is worth doing.
Complications and comorbidities
MS-DRG 469 covers the same operation with major complications or comorbidities, and CMS 2024 data puts its average submitted charge at $149,677 with an average total payment of $29,663. Cash bundles usually exclude the treatment of major complications outright, so read that exclusion before you assume the number is final.
What the bundle includes downstream
Two bundles $2,000 apart can be very different purchases if one includes a month of physical therapy and the other includes none. Price the aftercare yourself with our physical therapy cost guide so the comparison is apples to apples.
Geography and willingness to travel
Because these bundles are prepaid, portable, and quoted in advance, several centers openly market to out-of-state patients. Surgery Center of Oklahoma states its bundled rates apply equally to in-state, out-of-state, and self-paying patients. When the spread between a published bundle and a local hospital’s posted price is tens of thousands of dollars, travel costs are noise.
Cash Price vs. Insurance
Knee replacement is one of the rare procedures where paying cash can genuinely beat using coverage. A high-deductible plan holder facing a $7,000 deductible plus coinsurance on a hospital’s negotiated rate can easily land above a prepaid $15,794 surgery-center bundle.
The catch is that you have to choose in advance. Centers publishing these rates state plainly that the cash price applies only if you are not filing an insurance claim, and the fee is due in full before surgery. You cannot prepay the bundle and then bill your plan afterward.
If the surgery is happening at a hospital, your leverage lives in the gap between the charge and the payment. Every hospital must post a machine-readable file of its prices including a discounted cash price for self-pay patients, and CMS began enforcing updated 2026 requirements on April 1, 2026. PIRG’s findings are a warning here too: posted estimates did not always match the machine-readable files, and physician fees were sometimes excluded without saying so. Our guide to hospital price transparency shows how to read one of these files and confirm what is inside the number.
How to Pay Less
Get a written, itemized estimate before you commit. Ask every provider to break out surgeon, facility, anesthesia, and implant, even inside a bundle, and to state what happens if you stay overnight. Run the total through our fair price checker against the ranges above.
Price an ambulatory surgery center, including one you would drive to. The published $15,794 and $17,679 bundles are real, prepaid prices for the same operation a hospital may post at four to fifteen times that. Ask about medical eligibility first, since not every patient is a candidate for a same-day outpatient knee.
Apply for charity care before surgery, not after the bill arrives. Nonprofit hospitals maintain written financial assistance policies, and a medically necessary knee replacement generally qualifies where a cosmetic procedure would not. Screen yourself in a few minutes with our charity care checker, then follow the steps in our hospital charity care guide.
Negotiate against what hospitals collect, not what they charge. If you are already holding a bill, the anchor is the roughly $17,364 average total payment CMS reports for this stay, not the $93,184 average charge. Our negotiation script and how to negotiate medical bills give you the exact wording, and our itemized hospital bill guide covers auditing the line items first.
Know what the cheaper interventions cost, in case your surgeon says there is still room. This is a medical decision, not a budgeting one, but it helps to have the numbers: see our guides to cortisone shots, knee gel injections, PRP injections, and meniscus surgery.
Budget the full 90 days. Add up the therapy visits, home health days, equipment, and follow-ups that fall outside the surgical quote. A bundle that includes 30 days of physical therapy can be the cheaper purchase even when its headline number is higher.
The Bottom Line
Budget $15,800 to $43,000 for a knee replacement paid in cash as of August 2026. Treat any quote near $9,000 as a surgeon’s fee, and treat a hospital’s posted self-pay price as an opening position rather than a price.
The most useful thing you can do is force every quote into the same shape: one number, covering surgeon, facility, anesthesia, implant, and a stated amount of aftercare. Once the quotes are comparable, the gap between the cheapest and the most expensive option for identical surgery is frequently larger than a year of income. If you are pricing both joints, our hip replacement cost guide runs the same breakdown for the other side.