CPT code 57100: Vaginal biopsy, simple mucosal sampling2026 Medicare rate & RVUs in South Dakota

In South Dakota, Medicare pays $100.33 for 57100 in the office and $53.57 when it’s performed in a hospital or facility.

Check a contract rate as a % of Medicare · 57100 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 57100 covers

A clinician, commonly a gynecologist, takes a limited sample of vaginal mucosa for diagnosis, often from a localized area that appears abnormal on examination. The procedure may be performed in an office or a facility. The tissue is submitted for microscopic evaluation; the biopsy service is distinct from the laboratory’s examination of the specimen when that service is performed.

Choose this code for a simple mucosal biopsy, rather than the more extensive biopsy described by 57105 or an excision such as removal of a vaginal cyst or tumor. Document the sampled site, the reason for biopsy, and the work performed. This minor procedure has a 0-day global period, so same-day preoperative and postoperative care is included. When multiple procedures are performed in one session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% multiple-procedure reduction. Modifier 50 is inappropriate. Medicare does not pay an assistant at surgery for this service; 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 South Dakota compares for 57100

Across 109 of 109 payment localities, the office rate for 57100 runs from $93.36 in Arkansas to $132.09 in San Benito County, CA. South Dakota pays $100.33. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

57100 rates by state

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

See 57100 in every payment locality

How the 57100 rate is calculated

Each of 57100’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 57100

The CMS indicators that decide how 57100 is paid alongside other services.

What modifiers do to the payment

When to use modifier 51

Codes related to 57100

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

How 57100 has changed in South Dakota

Price 57100 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