Knee Replacement Cost in St Louis, MO (2026): Average Prices & What You'll Pay
What does a knee replacement cost in St Louis, MO?
You could pay $2,115 or $4,155 for the same knee replacement in St Louis, MO - depending entirely on which facility you choose. The median cash price across 9 reporting hospitals is $3,387. This data comes directly from hospital price transparency files published under federal law.
Three low-priced facilities in St Louis, MO, from hospital price files
- Barnes Jewish Hospital · St. Louis, MO $740
- OSF Healthcare System · Alton, MO $2,086
- Anderson Hospital · Maryville, MO $3,387
Free: the typical range and the facilities above. Add your email and we send the full ranked list of all 9 facilities (PDF) plus a checklist of what to ask before you book. We don't sell your information (privacy policy).
Where knee replacement costs vary in St Louis, MO
Pins show hospitals with price-transparency data (colored by vs. state average) and nearby ambulatory surgery centers and other facilities (colored by type). Click any pin for facility name and estimated cost range.
26+ people checked prices near them this month.
A knee replacement is four separate bills - and physical therapy, the longest of any joint replacement, is billed per visit.
Your personalized cost report includes:
- ✓ Why a short inpatient stay adds a facility day-rate on top of the surgery itself
- ✓ The separate anesthesia bill that can be out-of-network even at an in-network hospital
- ✓ How physical therapy is billed - per visit, often for months - and the plan limits to confirm first
- ✓ The questions to ask before scheduling, including whether you qualify for a lower-cost surgery center
- ✓ A real patient billing breakdown, line by line
Free for patients - takes 30 seconds to get.
We'll send a sign-in link to your email - click it to get your guide. No account required, no spam.
Cheapest Knee Replacement Providers in St Louis, MO
Based on declared cash/self-pay prices from CMS hospital price transparency files.
| # | Facility | City | Price | vs Median |
|---|---|---|---|---|
| 1 | Barnes Jewish Hospital | St. Louis, MO | $740 | -$2,647 |
| 2 | OSF Healthcare System | Alton, MO | $2,086 | -$1,301 |
| 3 | Hospital name hidden | Your City, MO | $706 | -$000 |
| 4 | Anderson Hospital | Maryville, MO | $3,387 | +$0 |
| 5 | Hospital name hidden | Your City, MO | $704 | -$000 |
| 6 | Hospital name hidden | Your City, MO | $703 | -$000 |
| 7 | Hospital name hidden | Your City, MO | $702 | -$000 |
| 8 | Hospital name hidden | Your City, MO | $701 | -$000 |
Your ranked price list is on its way to your email. Open the PDF now.
Prices are declared self-pay rates. Contact each facility for a formal quote before scheduling.
Email me this price comparison plus what to ask before booking
Sends a PDF with all 9 facilities ranked cheapest first, plus a short checklist of questions that change what you pay. We don't sell your information (privacy policy).
Before you book: three questions that change the price
- Is this the self-pay price, and does it include the doctor, anesthesia and any lab or pathology? Those are often billed separately.
- Can you give me the price in writing, with the billing codes it covers?
- What happens to the price if something extra is needed during the procedure?
Estimate your out-of-pocket cost → · When the bills arrive, we check them for errors →
Quick take
- Barnes Jewish Hospital is the lowest-cost option at $740 - $2,647 below the state median, just by choosing where you go.
- Ask for the cash price if your deductible isn't met - the median cash price here is $3,853, and it's often lower than what insurance pays before your deductible is satisfied.
- Freestanding ambulatory surgical centers (ASCs) are often 30-60% cheaper than hospital outpatient departments for the same procedure and may not appear in this hospital-only dataset - ask your doctor if one is an option.
BJC HealthCare, SSM Health, Mercy Health, and CoxHealth divide Missouri roughly by region, with meaningful inter-system competition in both St. Louis and Kansas City. Barnes-Jewish Hospital (BJC) is the dominant academic medical center. Rural Missouri - particularly the Ozarks - has significant critical access hospital coverage where pricing structures differ from PPS hospitals. Knee replacement is a high-cost elective procedure where facility selection has an outsized impact on total cost. Hospital outpatient and ambulatory surgery center rates for knee replacement have converged on outcomes but diverged further on price - ASC rates are typically 30–50% below hospital rates for the same implant and surgeon. Medicare Advantage plans increasingly direct patients to designated bundled-payment facilities where your out-of-pocket liability is capped.
Received a bill? Check it for errors → Estimate YOUR cost before you go → Managing more than one bill? See the family tracker →
Why prices vary - and what it means for your coverage
Setting matters too: the median outpatient price is $3,387 versus $740 inpatient, so where a procedure happens often matters more than which hospital you pick. Setting drives most of the spread here: an ambulatory surgical center (ASC) is usually meaningfully cheaper than a hospital operating room for the same procedure, when your case qualifies.
What you pay out of pocket on top of this depends on your deductible, your plan's out-of-pocket maximum, and whether every provider involved is in-network - not just the facility.
| Your situation | Estimated out-of-pocket |
|---|---|
| Deductible not yet met | ~$3,387 |
| Deductible met - 20% coinsurance | ~$677 |
| Out-of-network provider | $7,451+ |
Frequently asked questions: knee replacement costs in St Louis, MO
How much does a knee replacement cost in St Louis, MO?
The typical insurer-negotiated rate is $1,568, with most facilities between $916 and $4,130 (based on 8 hospitals reporting negotiated rates). Full market pricing - including cash rates, gross charges, and outlier facilities - ranges more widely, from $241 to $5,655 across all 9 St Louis, MO hospitals that publish prices. What you pay depends on the facility, your insurance, and whether you have met your deductible.
Where is the cheapest place to get a knee replacement in St Louis, MO?
Based on declared prices, the lowest-cost facility in our St Louis, MO data is Missouri Baptist Medical Center in Saint Louis at about $241. By metro, Saint Louis has the lowest median ($1,200). Freestanding ambulatory surgery centers are often cheaper still and may not appear in hospital price data - ask your doctor whether one is an option.
Why is a knee replacement so much cheaper at some St Louis, MO hospitals?
Prices vary up to 23.5× because each hospital sets its own list price, cash discount, and insurer-negotiated rates. In St Louis, MO, the median cash (self-pay) price is $3,853 versus a median negotiated rate of $1,568 - about 2.5× higher. Asking for the cash price as well as your insurer's negotiated rate is often the single biggest lever on what you pay.
How much will I actually pay out of pocket for a knee replacement in St Louis, MO?
Your out-of-pocket cost depends on your deductible, coinsurance, out-of-pocket maximum, and whether the facility is in-network - not just the sticker price. If you have not met your deductible, you will typically pay the negotiated rate in full until you do. Use the CostKits cost forecaster to estimate your specific out-of-pocket amount before you go.
Before you book
- How to read your medical bill
- How to stop medical bill problems before they start
- How to negotiate your medical bills
- Allowed amount vs negotiated rate: what your EOB is really saying
- How to read a Medicare Summary Notice
Other procedures in St Louis, MO
Knee Replacement, elsewhere
What matters before you schedule
ASC vs. hospital
Hospital outpatient departments typically charge 2-4x more than ambulatory surgery centers for the same knee replacement - same outcome, very different bill. Call ahead and ask for a self-pay or cash quote at each setting you're considering.
What's on your bill
A knee replacement involves multiple providers who bill separately - typically ASC Facility Fee, Orthopedic Surgeon Professional Fee, Anesthesia. Check each line item against your Explanation of Benefits to catch billing errors.
Cost by type
Which type your doctor orders for this knee replacement changes the billing code, and what you pay. For example: A recognized variation that can change the billing code and what you owe.
What to ask before you book
Get the CPT code from your doctor, confirm every provider involved (not just the facility) is in-network, ask for the cash-pay rate if you're uninsured or haven't met your deductible, and request a written estimate for knee replacement before you schedule.
CostKits compiles hospital price transparency data to help families make informed decisions. Track and manage your healthcare costs (free account).
Other Procedure Costs in St Louis, MO
- Appendectomy Cost in St Louis, MO
- Cataract Surgery Cost in St Louis, MO
- Childbirth Cost in St Louis, MO
- Cholecystectomy Cost in St Louis, MO
- Colonoscopy Cost in St Louis, MO
- CT Scan (Abdomen) Cost in St Louis, MO
- CT Scan (Chest) Cost in St Louis, MO
- CT Scan (Head) Cost in St Louis, MO
- CT Scan Cost in St Louis, MO
- Echocardiogram Cost in St Louis, MO
- Emergency Room Visit Cost in St Louis, MO
- Endoscopy Cost in St Louis, MO
- Hip Replacement Cost in St Louis, MO
- Hysterectomy Cost in St Louis, MO
- Mammogram Cost in St Louis, MO
- Brain MRI Cost in St Louis, MO
- Knee MRI Cost in St Louis, MO
- MRI Cost in St Louis, MO
- Spinal Fusion Cost in St Louis, MO
- Ultrasound Cost in St Louis, MO
- X-Ray Cost in St Louis, MO
Related Articles
Interested in understanding healthcare costs and managing your medical expenses?
- Free Cost EstimatorCalculate your exact out-of-pocket cost for any procedure
- Free Bill ScreenerCheck whether your bill and paperwork are ready for a professional review
- Family Bill TrackerTrack costs across every family member and every bill in one place
- Knee Replacement Cost GuideCompare Knee Replacement prices across all 50 states
- Deductible vs Out-of-Pocket MaximumLearn how insurance cost-sharing works and what you actually pay
- Cost ExplorerBrowse procedures and compare prices across the country
About the Author
John Caruso, FSA, MAAA
Healthcare actuary with 20+ years of experience in insurance pricing, medical billing systems, and healthcare cost analytics.
Connect on LinkedIn →Ready to take control of your healthcare costs?
Use the free cost estimator → · Get your bill screened for free → · See the family plan →