CPT code 27437: Patellar arthroplasty, without prosthesis2026 Medicare rate & RVUs in Idaho

In Idaho, Medicare pays $570.74 for 27437 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 27437 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 27437 covers

An orthopedic surgeon performs this operation to reshape or reconstruct the kneecap’s joint surface without placing a prosthesis. It is used for selected patellar conditions where the operative plan addresses the patella itself, rather than replacing the patellar surface with an implant. The procedure is generally performed in a hospital or ambulatory surgery setting. The operative report should identify the patellar condition, describe the work performed on the patella, and make clear that no prosthetic patellar component was implanted.

Select this code based on the documented procedure, not simply a diagnosis of patellar pain or cartilage disease. Distinguish it from patellar arthroplasty with a prosthesis and from procedures directed at recurrent patellar dislocation or broader knee replacement. Medicare assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and the others at 50%. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery payment is restricted; co-surgeons are paid only with 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 Idaho compares for 27437

Across 109 of 109 payment localities, the facility rate for 27437 runs from $556.69 in Arkansas to $760.51 in Alaska. Idaho pays $570.74. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

27437 rates by state

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

See 27437 in every payment locality

How the 27437 rate is calculated

Each of 27437’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 27437

27437 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 27437

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

How 27437 has changed in Idaho

Price 27437 for an earlier date of service

Where the Idaho rate applies

Idaho is a Medicare payment area, not a city. Our Census mapping connects it to 235 cities and communities in Idaho. Some span more than one payment area; confirm with the service ZIP.

• Aberdeen
• Acequia
• Albion
• American Falls
• Ammon
• Arbon Valley
• Arco
• Arimo

Browse all communities in Idaho

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