CPT code 24635: Monteggia repair, open treatment2026 Medicare rate & RVUs

Medicare pays $639.96 for 24635 nationally in a facility.

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

What 24635 covers

A Monteggia injury pairs a fracture of the proximal ulna with dislocation of the radial head. An orthopedic surgeon treats it through an open approach, reducing the fracture-dislocation and stabilizing the ulna with fixation when performed. These operations are generally done in a hospital or ambulatory surgery setting; the operative report should establish the injury pattern and describe the reduction and stabilization performed.

Select this code for open operative management of the Monteggia fracture-dislocation, rather than closed treatment of the same injury. The 90-day global period includes 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 others at 50%. Bilateral reporting with 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.

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.

Where 24635 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

24635 rates by state

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

How the 24635 rate is calculated

Each of 24635’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 24635

24635 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

24635 compared with similar codes

How to choose

24620Monteggia treatmentClosed, without manipulation

Both concern a Monteggia fracture-dislocation. Choose 24620 for closed treatment; choose 24635 when the injury is managed through an open operation.

24615Elbow dislocationOpen treatment

This code addresses open treatment of an elbow dislocation. A proximal ulna fracture with radial head dislocation identifies the Monteggia pattern addressed by 24635.

24685Ulna fracture repairProximal end, open treatment

This code is for open treatment of a proximal ulna fracture without the Monteggia fracture-dislocation pattern. The associated radial head dislocation distinguishes 24635.

24665Radial head surgeryWithout prosthetic replacement

This code treats a radial head or neck fracture openly. A Monteggia injury instead centers on a proximal ulna fracture with radial head dislocation.

Codes related to 24635

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

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