CPT code 21555: Mass excision, subcutaneous, under 3 cm2026 Medicare rate & RVUs in South Dakota

In South Dakota, Medicare pays $444.42 for 21555 in the office and $279.42 when it’s performed in a hospital or facility.

Check a contract rate as a % of Medicare · 21555 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 21555 covers

This service covers surgical excision of a soft-tissue tumor beneath the skin in the neck or anterior thorax when the lesion is smaller than 3 cm. A common example is removal of a palpable superficial mass, such as a suspected lipoma, by a surgeon or other qualified physician in an office procedure room or operating room. Code selection depends on both the lesion’s depth and size; a deeper mass or one measuring 3 cm or more falls into a different code path.

The operative note should identify the site, show that the mass was subcutaneous rather than deep, support the size category, and describe the excision. A diagnostic sample alone is reported as a biopsy service. Medicare assigns a 90-day global period, which includes the day-before preoperative visit and 90 days of related postoperative care. For multiple procedures in one session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Modifier 50 is inappropriate. Medicare does not pay an assistant at surgery; co-surgery 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 21555

Across 109 of 109 payment localities, the office rate for 21555 runs from $406.13 in Arkansas to $599.45 in San Benito County, CA. South Dakota pays $444.42. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

21555 rates by state

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

See 21555 in every payment locality

How the 21555 rate is calculated

Each of 21555’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 21555

21555 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 21555

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

How 21555 has changed in South Dakota

Price 21555 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