Billing code 58950: Cancer resectionMedicare rate & RVUs

Medicare pays $1,068.49 for 58950 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 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.

Where 58950 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

58950 rates by state

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

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

58950 compared with similar codes

How to choose

58940Oophorectomy

58940 describes removal of ovary or ovaries, rather than the malignancy resection with bilateral adnexal removal and omentectomy represented by 58950.

58951Ovarian cancer surgery

Use 58951 when the documented resection also includes total abdominal hysterectomy along with bilateral salpingo-oophorectomy and omentectomy.

58952Cancer debulking

58952 is the related choice when radical dissection for debulking is performed; its descriptor allows omentectomy with or without that service.

58900Ovarian biopsy

58900 is an ovarian biopsy code for tissue sampling, not definitive resection of malignancy with bilateral adnexal removal and omentectomy.

Codes related to 58950

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