No office rate
Choose 27420 for reconstruction to address a dislocating patella. Choose 27424 when the operation removes or revises the patella itself.
On this page
CMS RVU26D · Effective 2026-10-01
27424 Patella surgery Medicare reimbursement rates in Oregon
Report 27424 when an orthopedic surgeon surgically removes or revises the kneecap, rather than reconstructing it for instability or resurfacing it with an implant. Compare 27424 office and facility rates across CMS payment localities in Oregon.
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 27424 in Oregon?
Oregon has 2 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 2 payment areas shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$681.76–$724.47
2 of 2 localities have a supported rate.
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 27424: Patella removal or revision
Report 27424 when an orthopedic surgeon surgically removes or revises the kneecap, rather than reconstructing it for instability or resurfacing it with an implant.
This code represents an operation to remove or revise the patella. Orthopedic surgeons typically perform it in a hospital or ambulatory surgical setting when the kneecap itself requires operative treatment, such as after significant damage or a prior patellar procedure. The operative report should make clear what was done to the patella and why; a procedure aimed at correcting patellar instability or resurfacing the patella is a different service.
Report 27424 for the patellar removal or revision actually performed, supported by the preoperative findings and operative details. CMS assigns a 90-day global period: the day-before preoperative visit and related postoperative care during the following 90 days are included. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. For bilateral surgery, modifier 50 is paid at 150%. An assistant at surgery may be paid; co-surgeons require supporting documentation, and team surgery is not permitted.
CMS billing rules for 27424
- 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 RVU9.98 · 47%
- Practice expense (office) RVU8.97 · 43%
- Malpractice RVU2.13 · 10%
34
Medicare services in 2024 · #5577 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.
27424 compared with similar codes
Office rates for Oregon, from the same CMS release.
No office rate
Code 27422 describes instability reconstruction that includes extensor realignment or muscle advancement; 27424 describes removal or revision of the kneecap.
No office rate
Code 27437 is patellar arthroplasty without a prosthesis. It is not the code for removal or revision of the patella.
No office rate
Code 27438 covers patellar arthroplasty with a prosthetic implant; 27424 covers removal or revision rather than implant-based resurfacing.
Compare 27424 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.
2 of 2 payment localities
Portland →
Office / nonfacility
Unavailable
Facility
$724.47
Rest Of Oregon →
Office / nonfacility
Unavailable
Facility
$681.76
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27424 billing questions
How is 27424 different from patellar instability reconstruction?
Use 27424 when the operation removes or revises the patella itself. Codes 27420 and 27422 describe reconstruction directed at a dislocating patella.
Is this the code for patellar resurfacing with an implant?
No. Code 27438 describes patellar arthroplasty with a prosthetic implant; 27424 is for removal or revision of the patella.
What postoperative care is included?
The 90-day global period includes the day-before preoperative visit and related postoperative care during the 90 days after surgery.
Can an assistant or co-surgeon be reported?
An assistant at surgery may be paid. Co-surgeons are paid only when supporting documentation is provided; team surgery is not permitted.
How is bilateral surgery handled?
CMS pays bilateral surgery reported with modifier 50 at 150%.
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.
2,88227418,,Repair degenerated kneecap,A,,11.31,9.28,NA,9.28,,2.26,22.85,22.85,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,88327420,,Revision of unstable kneecap,A,,10.00,8.98,NA,8.98,,2.13,21.11,21.11,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,88427422,,Revision of unstable kneecap,A,,9.95,8.89,NA,8.89,,2.08,20.92,20.92,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,88527424,,Revision/removal of kneecap,A,,9.98,8.97,NA,8.97,,2.13,21.08,21.08,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,88627425,,Lat retinacular release open,A,,5.26,6.89,NA,6.89,,1.11,13.26,13.26,0,090,0.10,0.69,0.21,2,1,1,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,88727427,,Reconstruction knee,A,,9.55,8.42,NA,8.42,,1.87,19.84,19.84,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,88827428,,Reconstruction knee,A,,15.19,12.73,NA,12.73,,3.23,31.15,31.15,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00