Partial knee replacement cost in Portland, ME
In Portland-South Portland, ME, 2 hospitals list a cash price for partial knee replacement (one compartment): from $658.32 to $1,854.00, with a median of $1,256.16. The lowest listed price is at Mercy Hospital — $597.84 less than the median here. Across Maine, the median is $834.77 at 4 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 23, 2026; the hospital files themselves were last updated between — and —.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Portland-South Portland, ME.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Mercy Hospital lowest Portland, ME PF REVISION OF KNEE JOINT | $658.32 | $2,532.00 | $1,352.09–$1,929.38 | 74% | — source file |
| York Hospital York, ME · (207) 351-2478 ARTHROPLASTY KNEE MED/LAT | $1,854.00 | $3,090.00 | — | 40% | — source file |
Outpatient: lowest $658.32, median $1,256.16, highest $1,854.00 — a 2.8× difference within the same market.
As an inpatient, the same code is billed by 2 facilities here, median $1,256.16. 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 the one hospital here that publishes insurer rates for this code, the cash price is below the highest rate a health plan has negotiated and 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.