CPT code 58950: Cancer resection, with BSO and omentectomy2026 Medicare rate & RVUs in Montana

In Montana, Medicare pays $1,068.23 for 58950 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 58950 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 58950 covers

A gynecologic oncologist uses this code for surgery to remove ovarian, fallopian tube, or primary peritoneal malignancy together with both ovaries and tubes and the omentum. The operation is generally performed in a hospital operating room. This code describes the combination of cancer resection, bilateral salpingo-oophorectomy, and omentectomy; it does not describe a simple ovary removal or a diagnostic ovarian biopsy.

Select the code from the operative report’s documented diagnosis and the procedures actually performed. Documentation should identify the malignancy and describe removal of both adnexa and the omentum, as well as any additional work that could point to a different code in the resection family. The code is priced as bilateral, so modifier 50 does not increase payment. It has a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures occur in one session, the highest-valued procedure is paid in full and the others are subject to the standard 50% reduction. Assistant-at-surgery payment may be made; 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 58950

Across 109 of 109 payment localities, the facility rate for 58950 runs from $957.26 in Arkansas to $1,331.04 in Alaska. Montana pays $1,068.23. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

58950 rates by state

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

See 58950 in every payment locality

How the 58950 rate is calculated

Each of 58950’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 58950

58950 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 51

Codes related to 58950

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

How 58950 has changed in Montana

Price 58950 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