Orthopedic surgery is among the most expensive — and most price-variable — care categories in American medicine. BillKarma’s analysis of 6,800+ hospitals found that a standard knee replacement (CPT 27447) ranges from $18,000 to $91,000 at hospitals in the same metropolitan area, for the same procedure performed by surgeons with comparable credentials. The implant alone can be billed at 300% of what the hospital paid for it. This guide breaks down every component of orthopedic billing, shows you where the overcharges concentrate, and explains how to compare hospitals before you commit.
1. Common Orthopedic Procedures and Costs
Five procedures account for the majority of orthopedic billing volume. Each is billed under a specific CPT code, and prices vary dramatically based on site of service (hospital inpatient, hospital outpatient, or ambulatory surgery center) and geographic market.
Total knee replacement (CPT 27447): The most common major orthopedic procedure in the U.S. National average billed charge: $35,000–$65,000 at hospital outpatient. The implant component alone accounts for $10,000–$35,000 of that charge.
Total hip replacement (CPT 27130): Similar cost structure to knee replacement. National average billed charge: $32,000–$58,000. Hip implants (femoral stem, acetabular cup, liner, femoral head) involve more components, each billed separately in detailed hospital accounting.
Rotator cuff repair (CPT 29827): An arthroscopic shoulder procedure. Average billed charge: $15,000–$35,000. Hardware costs (anchors, sutures) add $2,000–$8,000 in materials charges.
ACL reconstruction (CPT 27407): Average billed charge: $20,000–$45,000. The graft type (autograft vs. allograft) affects both clinical outcomes and cost — allograft tissue is billed separately and adds $3,000–$6,000.
Lumbar spinal fusion (CPT 22612): One of the most expensive orthopedic procedures. Average billed charge: $80,000–$150,000 per level fused. Hardware (pedicle screws, rods, cages) can add $20,000–$50,000 in implant charges per level.
2. What Drives the Cost
Orthopedic surgery costs are built from five distinct components, each with its own markup structure. Understanding the layers helps you identify where to negotiate and what to question on your bill.
Implant cost: Hospitals purchase orthopedic implants from manufacturers (Zimmer Biomet, Stryker, DePuy Synthes, Smith+Nephew) under negotiated contracts that are typically confidential. Acquisition costs for a standard total knee system run $5,000–$8,500. Hospitals bill insurers $15,000–$35,000 for the same components — a markup of 100–400%. Hospitals are not required to disclose their acquisition cost, but you can request the implant product name and catalog number from your itemized bill.
Facility charge: The hospital’s charge for operating room time, nursing, sterile supplies, and overhead. This is typically the largest single line item after the implant. Facility charges for a knee replacement range from $18,000 to $55,000 depending on the hospital’s chargemaster and payer mix.
Surgeon fee: Billed separately by your orthopedic surgeon, typically $2,000–$8,000 for a knee or hip replacement. This is far more price-transparent than facility charges — Medicare publishes surgeon fee schedules by geographic locality.
Anesthesia: Billed by the anesthesiologist or CRNA in base units plus time units (typically $80–$100 per 15-minute unit at Medicare rates). A 90-minute joint replacement generates approximately $700–$1,400 in Medicare-rate anesthesia charges. Hospital billed rates are 3–5x higher.
Physical therapy: Post-operative PT is billed separately from surgery. A standard knee replacement recovery involves 12–24 PT visits. At $150–$350 per session, PT adds $1,800–$8,400 to total episode costs.
3. Medicare Rates vs. Hospital Charges
| Procedure (CPT) | Medicare Hosp. Outpatient Rate | National Avg. Billed Charge | Typical ASC Rate |
|---|---|---|---|
| Total Knee Replacement (27447) | $10,200 | $35,000–$65,000 | $18,000–$25,000 |
| Total Hip Replacement (27130) | $9,800 | $32,000–$58,000 | $17,000–$23,000 |
| Rotator Cuff Repair (29827) | $3,800 | $15,000–$35,000 | $8,000–$14,000 |
| ACL Reconstruction (27407) | $4,200 | $20,000–$45,000 | $9,000–$16,000 |
| Lumbar Spinal Fusion (22612) | $18,400 | $80,000–$150,000 | $35,000–$55,000 |
4. How to Compare Hospitals for Orthopedic Surgery
Federal price transparency rules (effective January 2021, enforcement stepped up in 2023) require hospitals to publish their standard charges for all services, including negotiated rates with each insurer. These machine-readable files are the most powerful tool available for comparing orthopedic costs before you schedule.
Step 1: Get your CPT code from your surgeon. For a knee replacement it’s 27447. For a hip it’s 27130. Ask the surgeon’s office for the specific CPT codes they plan to bill for your procedure.
Step 2: Look up each in-network hospital’s published negotiated rate for that CPT code with your specific insurer. Use the BillKarma hospital grade tool to compare pricing grades across facilities in your area, or search each hospital’s price transparency file directly.
Step 3: Compare BillKarma hospital grades for orthopedic outcomes in addition to price. A lower-cost hospital with a higher complication rate may cost more in the long run through readmissions and revision surgery.
Step 4: Ask whether an ambulatory surgery center is an option. For straightforward primary knee and hip replacements in healthy patients, ASCs typically cost 40–60% less than hospital outpatient departments with equivalent surgical outcomes.
| Procedure | Hospital Outpatient Average | ASC Average | Typical Savings |
|---|---|---|---|
| Knee Arthroscopy (29881) | $11,800 | $5,200 | $6,600 (56%) |
| Rotator Cuff Repair (29827) | $23,400 | $11,100 | $12,300 (53%) |
| ACL Reconstruction (27407) | $31,500 | $13,800 | $17,700 (56%) |
| Total Hip Replacement (27130) | $40,200 | $20,600 | $19,600 (49%) |
| Carpal Tunnel Release (64721) | $5,900 | $2,100 | $3,800 (64%) |
5. Implant Billing
Implant costs are the least transparent element of any orthopedic bill. Hospitals are not legally required to disclose what they paid for an implant, and device manufacturers keep their hospital contracts confidential. However, there are several things you can do.
Request the implant catalog number: Your itemized bill may list the implant as “prosthetic device” or “orthopedic implant” with a charge of $18,000. Ask the hospital billing department for the manufacturer name, product line, and catalog number. This is documented in your operative report.
Look up the implant’s list price: Manufacturer websites and medical supply databases publish suggested list prices for orthopedic implants. While hospitals rarely pay list price (they negotiate discounts), list price gives you a ceiling for what the device should cost. If the hospital is billing above published list price, that’s an error worth disputing.
Ask about implant choice: Some surgeons routinely use premium implant systems when a standard device would achieve equivalent outcomes. Ask your surgeon why they’re recommending a specific implant system and whether a lower-cost alternative exists for your case.
6. Reading a Knee Replacement Bill
7. Case Studies
$14,000 Savings by Choosing a Different In-Network Hospital
A 62-year-old retired teacher needed a total knee replacement. Her orthopedic surgeon had privileges at three in-network hospitals. Using hospital price transparency data, she compared the negotiated rates for CPT 27447 with her insurer across all three facilities.
Hospital A (academic medical center): $58,200 total negotiated charge. Hospital B (community hospital, same city): $44,100. Hospital C (affiliated ASC): $23,800. She confirmed with her surgeon that the ASC was appropriate for her case (no significant comorbidities, planned same-day discharge). She chose Hospital C. Her 20% coinsurance on $23,800 was $4,760 — compared to $11,640 at Hospital A. She saved $6,880 in out-of-pocket costs and reduced her insurer’s cost by over $27,000.
Lesson: Price transparency data is now publicly available. Comparing all in-network options before scheduling is one of the highest-leverage actions a patient can take.
Implant Cost Dispute Saves $3,200
A 55-year-old construction manager received a hip replacement at a regional hospital. His itemized bill listed “prosthetic hip device” at $31,400 with no product details. He requested the operative report and identified the implant as a Zimmer Biomet Taperloc Complete system.
Researching the catalog number, he found the published list price for the complete system was $19,200. The hospital was billing $12,200 above list price for a product they likely acquired at a significant discount below list. He submitted a written dispute to the billing department citing the manufacturer’s published pricing. The hospital reduced the implant charge to $22,100, saving him $9,300 in billed charges and $1,860 in coinsurance (20%).
Lesson: Always request the implant manufacturer, product line, and catalog number from your operative report. Then research the manufacturer’s published pricing before accepting the bill.
Outpatient vs. Inpatient Knee Replacement: $8,000 Savings
A 58-year-old accountant was scheduled for a total knee replacement at a hospital outpatient department. His insurer’s negotiated rate for the inpatient-equivalent outpatient stay was $41,000. His surgeon mentioned that he was a good candidate for outpatient surgery (same-day discharge).
He asked about performing the procedure at an affiliated ambulatory surgery center instead. The ASC rate for the same procedure with the same surgeon was $23,000. His 20% coinsurance on $41,000 was $8,200. On $23,000 it was $4,600 (both after deductible). He saved $3,600 in out-of-pocket and recovered at home the same evening. He reported his recovery was comparable to what friends described after inpatient knee replacement.
Lesson: For straightforward joint replacement cases, ask your surgeon explicitly whether outpatient surgery at an ASC is appropriate. The cost difference is substantial and outcomes are comparable for eligible patients.
8. Bundled Payment Programs
Bundled payment programs replace the standard fee-for-service billing model with a single negotiated price covering the entire episode of care — surgery, facility, anesthesia, and sometimes post-acute rehabilitation. For orthopedic procedures, bundles typically cover 90 days post-surgery.
Several large insurers (Aetna, Cigna, UnitedHealthcare) and major employers offer bundled payment options for joint replacement. The fixed price is typically 20–40% below the expected sum of individual charges, and patients often pay a flat copay rather than coinsurance on a large unpredictable total.
Medicare’s Bundled Payments for Care Improvement (BPCI) program works similarly. Ask your insurer whether a bundled payment option is available for your orthopedic procedure — and which hospitals or surgery centers participate.
9. Questions to Ask Your Surgeon Before Scheduling
These seven questions can save you thousands and help you make a better-informed care decision:
1. What specific CPT codes will be billed for my procedure?
2. Which implant system do you plan to use, and why? Is there a lower-cost alternative with equivalent outcomes for my case?
3. Am I a candidate for outpatient surgery at an ambulatory surgery center?
4. Does my insurer offer a bundled payment option for this procedure, and do you participate?
5. Which in-network facilities do you have privileges at, and can I compare their negotiated rates?
6. Will all providers involved in my care (anesthesiologist, assistant surgeon) be in-network?
7. If I need post-surgical physical therapy, can you recommend an in-network PT provider near me?
Frequently Asked Questions
How much does a knee replacement cost with insurance?
With insurance, your out-of-pocket for a knee replacement depends on your deductible, coinsurance, and out-of-pocket maximum. Most patients pay $3,000–$10,000 in cost-sharing even with good insurance because the total billed charge averages $35,000–$65,000 at hospital outpatient or inpatient facilities. Choosing an in-network facility and asking about bundled payment programs can significantly reduce your share.
Why do orthopedic implants cost so much?
Orthopedic implants (knee and hip prosthetics) are purchased by hospitals from manufacturers at $5,000–$8,000 for a standard knee implant. Hospitals then bill insurers $15,000–$35,000 for the same device, a markup of 200–400%. Your cost-sharing is based on the billed amount, not the hospital’s acquisition cost. The lack of price transparency in implant contracting has allowed this markup to persist for decades.
Can I see an itemized bill for my joint replacement?
Yes. You have the right to request an itemized bill for any hospital service. For a joint replacement, the itemized bill should list the implant by product name and catalog number (not just “prosthetic device”), the facility fee, surgeon fee, anesthesia, and each day of inpatient care separately. If the hospital refuses to provide implant-level detail, escalate to your insurer’s member services.
What is a bundled payment for orthopedic surgery?
A bundled payment is a single fixed price that covers all costs for an episode of care — including surgery, anesthesia, facility, and sometimes post-acute rehabilitation. Some insurers and employers negotiate bundled rates with specific hospitals or surgery centers. The price is typically 20–40% below the sum of individual fee-for-service charges. Ask your insurer whether your plan offers a bundled payment option before scheduling.
Should I have joint replacement at a hospital or surgery center?
For eligible patients (generally healthy, no significant comorbidities), an ambulatory surgery center (ASC) can perform knee and hip replacements at 40–60% lower cost than a hospital outpatient department. Medicare reimburses ASCs at a lower rate, and facilities pass some of that savings to patients. However, complex cases requiring overnight monitoring should be done at a hospital. Ask your surgeon whether you are a candidate for outpatient joint replacement.