CPT code 33958: Cannula repositioning, open, younger than six years2026 Medicare rate & RVUs in Montana

In Montana, Medicare pays $169.96 for 33958 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 33958 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 33958 covers

This service covers surgically repositioning an existing peripheral cannula used for extracorporeal membrane oxygenation or extracorporeal life support in a patient younger than six years. A surgeon may adjust a cannula in a peripheral vessel, such as a cervical or femoral vessel, when its position needs correction during ECMO/ECLS support. The procedure is typically performed in a hospital operating room or intensive care setting by a cardiac or vascular surgeon.

Select this code for open repositioning in the specified age group, not for initial cannula placement, percutaneous repositioning, central cannula repositioning, or cannula removal. The operative report should identify the patient’s age, the peripheral cannula, the open approach, and the repositioning performed. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard multiple procedure reduction. Modifier 50 is not appropriate. Assistant-at-surgery payment requires medical-necessity documentation; co-surgeons and team surgery are 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 33958

Across 109 of 109 payment localities, the facility rate for 33958 runs from $149.87 in Wisconsin to $216.67 in Alaska. Montana pays $169.96. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

33958 rates by state

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

See 33958 in every payment locality

How the 33958 rate is calculated

Each of 33958’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 33958

The CMS indicators that decide how 33958 is paid alongside other services.

What modifiers do to the payment

When to use modifier 51

Codes related to 33958

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

How 33958 has changed in Montana

Price 33958 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