No office rate
27442 describes arthroplasty involving both medial and lateral compartments; 27446 is limited to either one.
On this page
CMS RVU26D · Effective 2026-10-01
27446 Partial knee replacement Medicare reimbursement rates in Minnesota
Reports knee replacement limited to the medial or lateral compartment, such as for isolated compartment disease treated with a partial prosthesis. Compare 27446 office and facility rates across CMS payment localities in Minnesota.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 27446 in Minnesota?
Minnesota has 1 payment locality in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the payment area shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$975.23
1 of 1 localities have a supported rate.
Payment area: Minnesota
One mapped payment locality.
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Orthopedic surgery
About 27446: Single-compartment knee arthroplasty
Reports knee replacement limited to the medial or lateral compartment, such as for isolated compartment disease treated with a partial prosthesis.
An orthopedic surgeon uses this code for a knee arthroplasty confined to one femorotibial compartment: medial or lateral. A typical case is replacement of the damaged surfaces in one compartment for isolated disease, rather than replacement of the entire knee. The operative report should identify the compartment treated and describe the prosthetic reconstruction. This code is used for partial knee replacement, not a revision merely because the CMS short descriptor uses broad revision wording.
Choose the code by the extent of the arthroplasty documented, not by disease severity or the number of implant pieces. Distinguish a one-compartment procedure from arthroplasty involving both compartments or total knee replacement. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and others at 50%. For bilateral procedures reported with modifier 50, CMS pays at 150%. Assistant-at-surgery payment may be made; co-surgeon payment requires supporting documentation, and team surgery is not permitted.
CMS billing rules for 27446
- Global period
- Major surgery with a 90-day global period: the day-before preoperative visit and 90 days of related postoperative care are included.
- Multiple procedures
- Standard multiple procedure reduction: the highest-valued procedure is paid in full and others at 50% when performed in the same session.
- Bilateral procedures
- Bilateral procedure with modifier 50 is paid at 150%.
- Assistant at surgery
- Assistant at surgery may be paid.
- Co-surgeons
- Co-surgeons paid only with supporting documentation.
- Team surgery
- Team surgery not permitted.
Where the value comes from
- Work RVU16.70 · 53%
- Practice expense (office) RVU11.13 · 35%
- Malpractice RVU3.53 · 11%
23.2K
Medicare services in 2024 · #1082 by national volume
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
27446 compared with similar codes
Office rates for Minnesota, from the same CMS release.
No office rate
27447 is used for total knee arthroplasty. Use 27446 when the operative work is confined to one compartment.
No office rate
27486 describes revision knee arthroplasty involving one component. It is a revision procedure, unlike the one-compartment arthroplasty reported with 27446.
Compare 27446 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
1 of 1 payment localities
Minnesota →
Office / nonfacility
Unavailable
Facility
$975.23
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How this local rate is calculated
Each RVU component is multiplied by its own geographic practice cost index (GPCI). The three adjusted components are added, then multiplied by the conversion factor. These are the inputs used for 27446 in Minnesota.
PPRRVU2026_Oct_nonQPP.csv
2,898
- Code
- 27446
- Physician work
- 16.70
- Practice expense
- 11.13
- Malpractice
- 3.53
GPCI2026.csv
66
- Locality
- Minnesota
- Physician work
- 1.000
- Practice expense
- 1.029
- Malpractice
- 0.296
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 16.70 | × 1.000 | 16.7000 |
| Practice expense | 11.13 | × 1.029 | 11.4528 |
| Malpractice | 3.53 | × 0.296 | 1.0449 |
| Total RVUs | 29.1976 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Minnesota$975.23
Explore RVUs, geographic factors and the full formula
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 16.7 | 1 |
| Practice expense | 11.13 | 1.029 |
| Malpractice | 3.53 | 0.296 |
(16.7 × 1 + 11.13 × 1.029 + 3.53 × 0.296) × $33.4009 = $975.23
The office and facility calculations use their respective practice-expense RVUs. The facility amount here is the physician fee, not a separate hospital or facility bill.
27446 billing questions
How is 27446 distinguished from total knee replacement?
Use 27446 when the arthroplasty is confined to the medial or lateral compartment. Total knee arthroplasty is reported when the operative procedure replaces the knee more extensively.
What documentation supports 27446?
The operative report should identify the medial or lateral compartment treated and document the arthroplasty performed there. It should make clear that the procedure was limited to one compartment.
How is bilateral 27446 paid?
CMS pays bilateral procedures reported with modifier 50 at 150%.
What postoperative care is included?
The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.
Can an assistant or co-surgeon be reported?
Assistant-at-surgery payment may be made. Co-surgeon payment requires supporting documentation; CMS does not permit team surgery.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
2,89527441,,Revision of knee joint,A,,11.25,9.36,NA,9.36,,2.40,23.01,23.01,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,89627442,,Revision of knee joint,A,,12.06,9.51,NA,9.51,,2.53,24.10,24.10,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,89727443,,Revision of knee joint,A,,11.12,9.32,NA,9.32,,2.37,22.81,22.81,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,89827446,,Revision of knee joint,A,,16.70,11.13,NA,11.13,,3.53,31.36,31.36,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,89927447,,Total knee arthroplasty,A,,19.11,11.58,NA,11.58,,4.02,34.71,34.71,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,90027448,,Incision of thigh,A,,11.31,9.11,NA,9.11,,2.41,22.83,22.83,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,90127450,,Incision of thigh,A,,14.24,10.63,NA,10.63,,2.93,27.80,27.80,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6314212,MA,99,REST OF MASSACHUSETTS,1.016,1.053,0.797
6408202,MI,01,DETROIT,1.000,0.965,1.686
6508202,MI,99,REST OF MICHIGAN,1.000,0.913,1.129
6606202,MN,00,MINNESOTA,1.000,1.029,0.296
6707302,MS,00,MISSISSIPPI,1.000,0.861,0.739
6805302,MO,02,METROPOLITAN KANSAS CITY,1.000,0.939,0.977
6905302,MO,01,METROPOLITAN ST. LOUIS,1.000,0.952,1.002