CPT code 27334: Knee synovectomy, anterior or posterior approach2026 Medicare rate & RVUs in Puerto Rico

In Puerto Rico, Medicare pays $652.19 for 27334 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 27334 nationwide

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 27334 covers

This code represents an open knee arthrotomy with removal of diseased synovial tissue through an anterior or posterior approach. Orthopedic surgeons typically perform it in an operating room for substantial synovial disease, such as persistent inflammatory or proliferative synovitis requiring surgical removal rather than a diagnostic tissue sample. The operative report should identify the approach and describe the synovectomy performed; extension into the popliteal area points to the more extensive sibling code, 27335.

Report 27334 for the open synovectomy described, not for synovial biopsy alone or arthroscopic synovectomy. Documentation should establish the knee site, open approach, tissue removed, and extent of the procedure. CMS assigns a 90-day global period: the day-before preoperative visit and 90 days of related postoperative care are included. For multiple procedures in the same session, the highest-valued procedure is paid in full and others at 50%. Bilateral reporting with modifier 50 is paid at 150%. An assistant at surgery may be paid; co-surgeon payment requires supporting documentation, and team surgery is not permitted.

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.

How Puerto Rico compares for 27334

Across 109 of 109 payment localities, the facility rate for 27334 runs from $578.70 in Arkansas to $789.79 in Alaska. Puerto Rico pays $652.19. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

27334 rates by state

Office rate range in each state. Select a state to see its payment localities.

See 27334 in every payment locality

How the 27334 rate is calculated

Each of 27334’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

Payment rules and modifiers for 27334

27334 has a 90-day global period: related visits in that window are included in the surgery payment.

What modifiers do to the payment

When to use modifier 50

Codes related to 27334

Related codes aren’t interchangeable: bill the code that matches the service performed.

How 27334 has changed in Puerto Rico

Price 27334 for an earlier date of service

Where the Puerto Rico rate applies

Puerto Rico is a Medicare payment area, not a city. Our Census mapping connects it to 292 cities and communities in Puerto Rico. Some span more than one payment area; confirm with the service ZIP.

• Aceitunas
• Adjuntas
• Aguada
• Aguadilla
• Aguas Buenas
• Aguas Claras
• Aguilita
• Aibonito

Browse all communities in Puerto Rico

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Open CMS sourceHow we calculate rates