Partial knee replacement cost in Chicago, IL
In Chicago-Naperville-Elgin, IL-IN, 10 hospitals list a cash price for partial knee replacement (one compartment): from $1,114.85 to $41,473.60, with a median of $13,690.00. The lowest listed price is at Humboldt Park Health — $12,575.15 less than the median here. Across Illinois, the median is $8,812.89 at 10 hospitals.
- The median here, $13,690.00, is 10% below the US median of $15,226.08.
- Every hospital here lists a cash price below its full list price.
Cash prices at 10 facilities across 7 cities for code 27446, as an outpatient — the setting a self-pay patient normally buys. Collected Oct 31, 2026; the hospital files themselves were last updated between Dec 26, 2025 and Oct 27, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Chicago-Naperville-Elgin, IL-IN.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Humboldt Park Health lowest Chicago, IL · (773) 292-8200 Replacement of knee joint on side of knee File of Sep 29, 2026 · source file | $1,114.85 | $3,981.60 | $1,313.93–$4,180.68 | 72% |
| Morris Hospital Morris, IL · (815) 942-2932 Replacement of knee joint on side of knee File of Oct 27, 2026 · source file | $1,937.55 | $8,053.00 | $62.00–$8,294.59 | 76% |
| John H. Stroger, Jr. Hospital Chicago, IL · (312) 864-6000 PF-REVISION OF KNEE JOINT File of Apr 1, 2026 · source file | $2,110.50 | $3,015.00 | $915.93–$2,412.00 | 30% |
| Franciscan Health Munster Munster, IN · (219) 922-4200 Arthrp Knee Condyle&Plateau Medial/Lat Cmprt File of Jan 1, 2026 · source file | $11,771.20 | $55,263.84 | $3,121.64–$49,765.00 | 79% |
| Saint Joseph Medical Center - Joliet Joliet, IL · (815) 725-7133 Revision of knee joint File of Sep 1, 2026 · source file | $13,690.00 | $20,997.00 | $1,152.42–$20,997.00 | 35% |
| Saint Francis Hospital Evanston, IL · (847) 316-4000 Revision of knee joint File of Sep 1, 2026 · source file | $13,690.00 | $36,555.00 | $1,205.90–$36,555.00 | 63% |
| Franciscan Health Crown Point Crown Point, IN · (219) 757-6100 Arthrp Knee Condyle&Plateau Medial/Lat Cmprt File of Jan 1, 2026 · source file | $16,388.16 | $63,520.00 | $63,520.00 | 74% |
| Jackson Park Hospital Foundation Chicago, IL · (773) 947-7500 RIVISION OF KNEE JOINT File of Dec 26, 2025 · source file | $19,290.13 | $24,112.66 | — | 20% |
| Northwest Health - Porter Valparaiso, IN · (219) 983-8300 REVISION OF KNEE JOINT File of Apr 1, 2026 · source file | $38,367.45 | $142,101.66 | $959.71–$119,365.39 | 73% |
| Northwestern Memorial Hospital Chicago, IL · (312) 926-2000 HB Arthrp Knee Condyle&Plateau Medial/Lat Cmprt File of Apr 1, 2026 · source file | $41,473.60 | $59,248.00 | $13,864.03–$32,586.40 | 30% |
Outpatient: lowest $1,114.85, median $13,690.00, highest $41,473.60 — a 37.2× difference within the same market.
As an inpatient, the same code is billed by 2 facilities here, median $10,700.32. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 8 of 9 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 2 it is below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.
What partial knee replacement is, what the price covers and why prices differ: Partial knee replacement explained.