CPT code 27418: Tubercleplasty, anterior tibial tubercle advancement2026 Medicare rate & RVUs in Montana

In Montana, Medicare pays $763.06 for 27418 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 27418 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 27418 covers

The surgeon cuts and repositions the tibial tubercle—the bony prominence below the kneecap where the patellar tendon attaches—to shift the patella’s loading pattern. This procedure is used in selected patients with persistent patellofemoral pain or abnormal patellar mechanics; it is not simply a repair of kneecap tissue. An orthopedic surgeon typically performs it in a surgical facility, with the patellar tendon remaining attached to the moved bone segment.

Report 27418 when the operative work includes this tibial tubercle advancement, rather than a procedure directed primarily at reconstructing patellar restraints or treating a cartilage defect. The record should identify the indication, side, relevant examination or imaging findings, and the osteotomy and repositioning performed. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. In a same-session multiple-procedure claim, the highest-valued procedure is paid in full and other procedures at 50%. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery payment may be available; 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 Montana compares for 27418

Across 109 of 109 payment localities, the facility rate for 27418 runs from $682.90 in Arkansas to $938.35 in Alaska. Montana pays $763.06. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

27418 rates by state

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

See 27418 in every payment locality

How the 27418 rate is calculated

Each of 27418’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 27418

27418 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 27418

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

How 27418 has changed in Montana

Price 27418 for an earlier date of service

Where the Montana rate applies

Montana is a Medicare payment area, not a city. Our Census mapping connects it to 497 cities and communities in Montana. Some span more than one payment area; confirm with the service ZIP.

• Absarokee
• Acton
• Alberton
• Alder
• Alzada
• Amsterdam
• Anaconda-Deer Lodge County
• Antelope

Browse all communities in Montana

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