Partial knee replacement cost in Chicago, IL
In Chicago-Naperville-Elgin, IL-IN, 2 hospitals list a cash price for partial knee replacement (one compartment): from $1,114.85 to $13,690.00, with a median of $7,402.43. The lowest listed price is at Humboldt Park Health — $6,287.58 less than the median here. Across Illinois, the median is $1,809.50 at 6 hospitals.
Cash prices at 2 facilities across 2 cities for code 27446, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 22, 2026; the hospital files themselves were last updated between Aug 24, 2026 and Sep 1, 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 | File date |
|---|---|---|---|---|---|
| Humboldt Park Health lowest Chicago, IL · (773) 292-8200 Replacement of knee joint on side of knee | $1,114.85 | $3,981.60 | $3,981.60 | 72% | Aug 24, 2026 source file |
| Saint Francis Hospital Evanston, IL · (847) 316-4000 Revision of knee joint | $13,690.00 | $36,555.00 | $1,205.90–$36,555.00 | 63% | Sep 1, 2026 source file |
Outpatient: lowest $1,114.85, median $7,402.43, highest $13,690.00 — a 12.3× difference within the same market.
Cash or insurance?
At 2 of 2 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 1 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 it is
This code covers replacing only the worn part of the knee joint, usually the inner side, instead of the whole joint.
What the price covers
The hospital price usually covers the operating room, recovery and supplies. The surgeon and anesthesia usually bill separately.