CPT code 58900: Ovarian biopsy, tissue sampling only2026 Medicare rate & RVUs in South Dakota

In South Dakota, Medicare pays $364.06 for 58900 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 58900 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 58900 covers

An ovarian biopsy removes a limited piece of ovarian tissue for histologic evaluation rather than removing a cyst or part or all of the ovary. A gynecologist or gynecologic oncologist may obtain the sample during an abdominal or pelvic operation when tissue diagnosis is needed, such as evaluation of a suspicious ovarian lesion. The specimen is sent for pathologic examination; this code represents the surgeon’s sampling service, not the pathology interpretation.

Report 58900 when the operative record supports a distinct ovarian tissue biopsy and the work is not simply part of a more extensive removal. Document the sampled ovary, indication, approach, and specimen. CMS prices the code as bilateral, so modifier 50 does not increase payment. It has a 90-day global period, including the day-before preoperative visit and related postoperative care. When multiple procedures occur in one session, the highest-valued procedure is paid in full and the others at 50%. 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 South Dakota compares for 58900

Across 109 of 109 payment localities, the facility rate for 58900 runs from $351.55 in Arkansas to $488.44 in Alaska. South Dakota pays $364.06. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

58900 rates by state

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

See 58900 in every payment locality

How the 58900 rate is calculated

Each of 58900’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 58900

58900 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 58900

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

How 58900 has changed in South Dakota

Price 58900 for an earlier date of service

Where the South Dakota rate applies

South Dakota is a Medicare payment area, not a city. Our Census mapping connects it to 485 cities and communities in South Dakota. Some span more than one payment area; confirm with the service ZIP.

• Aberdeen
• Agar
• Agency Village
• Akaska
• Albee
• Alcester
• Alexandria
• Allen

Browse all communities in South Dakota

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