CPT code 21121: Sliding genioplasty, single-piece osteotomy2026 Medicare rate & RVUs in Chico, CA

In Chico, CA, Medicare pays $676.03 for 21121 in the office and $497.38 when it’s performed in a hospital or facility.

Check a contract rate as a % of Medicare · 21121 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 21121 covers

This operation reshapes the chin by cutting the mandibular symphysis as one segment, moving that segment to a planned position, and securing it. Oral and maxillofacial surgeons and plastic surgeons perform it in an operating room for concerns such as chin retrusion, excess projection, asymmetry, or vertical contour. It may be performed alone or as part of orthognathic reconstruction.

Choose 21121 when the operative report documents one sliding bone segment; a multisegment osteotomy or added augmentation changes the code selection. Document the osteotomy configuration, direction of movement, fixation, and any graft or implant work. CMS assigns a 90-day major-surgery global: the day-before preoperative visit and related postoperative care through day 90 are included. For multiple procedures in one session, the highest-valued procedure is paid in full and others are subject to the standard 50% reduction. CMS permits assistant-at-surgery payment, but not co-surgeon or team-surgery payment. The midline chin procedure is reported without modifier 50; bilateral adjustment is inappropriate.

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 Chico, CA compares for 21121

Across 109 of 109 payment localities, the office rate for 21121 runs from $584.18 in Arkansas to $826.56 in San Benito County, CA. Chico, CA pays $676.03. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

21121 rates by state

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

See 21121 in every payment locality

How the 21121 rate is calculated

Each of 21121’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 21121

21121 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 21121

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

How 21121 has changed in Chico, CA

Price 21121 for an earlier date of service

Where the Chico, CA rate applies

Chico, CA is a Medicare payment area, not a city. Our Census mapping connects it to 30 cities and communities in California. Some span more than one payment area; confirm with the service ZIP.

• Chico
• Bangor
• Berry Creek
• Biggs
• Butte Creek Canyon
• Butte Meadows
• Butte Valley
• Cherokee

Browse all communities in California

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