No office rate
Use 27335 for open synovectomy involving both anterior and posterior knee regions; 27334 describes work in one region.
On this page
CMS RVU26D · Effective 2026-10-01
27335 Knee synovectomy Medicare reimbursement rates in Alabama
Reports open removal of substantial synovial tissue from both the anterior and posterior knee when disease involves both regions. Compare 27335 office and facility rates across CMS payment localities in Alabama.
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 27335 in Alabama?
Alabama 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
$649.59
1 of 1 localities have a supported rate.
Payment area: Alabama
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 27335: Open anterior and posterior knee synovectomy
Reports open removal of substantial synovial tissue from both the anterior and posterior knee when disease involves both regions.
An orthopedic surgeon removes diseased synovial lining from both the anterior and posterior regions of the knee through an open operation. This may be performed for substantial proliferative or chronically inflamed synovium, including synovial disease associated with inflammatory arthritis. The operative report should establish that the work involved both regions, rather than a single-sided synovectomy or diagnostic tissue sampling.
Choose this code when the documented open synovectomy includes anterior and posterior knee regions; removal confined to one region is represented by the related single-region code. The day-before preoperative visit and 90 days of related postoperative care are included in the 90-day global period. When multiple procedures are performed 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%. Assistant-at-surgery services may be paid; co-surgeon payment requires supporting documentation, and team surgery is not permitted.
CMS billing rules for 27335
- 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 RVU10.29 · 48%
- Practice expense (office) RVU9.05 · 42%
- Malpractice RVU2.19 · 10%
2.8K
Medicare services in 2024 · #2235 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.
27335 compared with similar codes
Office rates for Alabama, from the same CMS release.
No office rate
29876 describes arthroscopic major synovectomy in two or more compartments. This code describes open synovectomy involving anterior and posterior regions.
No office rate
29875 is for limited arthroscopic synovectomy, not the extensive open anterior-and-posterior removal represented by 27335.
No office rate
27330 is diagnostic biopsy of the knee lining; 27335 is therapeutic removal of substantial synovial tissue from both regions.
Compare 27335 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
Alabama →
Office / nonfacility
Unavailable
Facility
$649.59
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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 27335 in Alabama.
PPRRVU2026_Oct_nonQPP.csv
2,846
- Code
- 27335
- Physician work
- 10.29
- Practice expense
- 9.05
- Malpractice
- 2.19
GPCI2026.csv
4
- Locality
- Alabama
- Physician work
- 1.000
- Practice expense
- 0.875
- Malpractice
- 0.566
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 10.29 | × 1.000 | 10.2900 |
| Practice expense | 9.05 | × 0.875 | 7.9188 |
| Malpractice | 2.19 | × 0.566 | 1.2395 |
| Total RVUs | 19.4483 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Alabama$649.59
Explore RVUs, geographic factors and the full formula
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 10.29 | 1 |
| Practice expense | 9.05 | 0.875 |
| Malpractice | 2.19 | 0.566 |
(10.29 × 1 + 9.05 × 0.875 + 2.19 × 0.566) × $33.4009 = $649.59
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.
27335 billing questions
How does this differ from 27334?
27335 is for open synovectomy involving both anterior and posterior knee regions. Use 27334 when the documented synovectomy is limited to one of those regions.
Can this be reported for an arthroscopic synovectomy?
No. This code describes an open procedure; 29876 is the arthroscopic code for major synovectomy involving two or more compartments.
What documentation supports reporting 27335?
The operative report should describe removal of synovial tissue from both the anterior and posterior regions of the knee and establish the extent of the procedure.
How is bilateral surgery reported?
For bilateral procedures, report modifier 50; CMS pays the bilateral procedure 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.
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.
2,84327332,,Removal of knee cartilage,A,,8.25,8.41,NA,8.41,,1.75,18.41,18.41,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,84427333,,Removal of knee cartilage,A,,7.36,7.98,NA,7.98,,1.56,16.90,16.90,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,84527334,,Remove knee joint lining,A,,8.96,8.60,NA,8.60,,1.90,19.46,19.46,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,84627335,,Remove knee joint lining,A,,10.29,9.05,NA,9.05,,2.19,21.53,21.53,0,090,0.10,0.69,0.21,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,84727337,,Exc thigh/knee les sc 3 cm/>,A,,5.76,5.07,NA,5.07,,1.39,12.22,12.22,0,090,0.10,0.69,0.21,2,1,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,84827339,,Exc thigh/knee tum dep 5cm/>,A,,10.85,8.02,NA,8.02,,2.52,21.39,21.39,0,090,0.10,0.69,0.21,2,1,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,84927340,,Removal of kneecap bursa,A,,4.21,5.98,NA,5.98,,0.88,11.07,11.07,0,090,0.10,0.69,0.21,2,1,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
1ADDENDUM E. FINAL CY 2026 GEOGRAPHIC PRACTICE COST INDICES (GPCIs) BY STATE AND MEDICARE LOCALITY,,,,,,
2,,,,,,
3Medicare Administrative Contractor (MAC),State,Locality Number,Locality Name,2026 PW GPCI (with 1.0 Floor)***,2026 PE GPCI,2026 MP GPCI
410112,AL,00,ALABAMA,1.000,0.875,0.566
502102,AK,01,ALASKA*,1.500,1.065,0.551
603102,AZ,00,ARIZONA,1.000,0.969,0.856
707102,AR,13,ARKANSAS,1.000,0.859,0.515