CPT code 21123: Chin augmentation, sliding osteotomy with graft2026 Medicare rate & RVUs in Ohio

In Ohio, Medicare pays $747.48 for 21123 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 21123 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 21123 covers

A surgeon cuts and moves the chin portion of the mandible, then places bone between the repositioned segment and the remaining jaw to augment the chin. This approach may be selected when sliding the bone alone would leave a gap or provide insufficient projection or height. Oral and maxillofacial, plastic, or craniofacial surgeons typically perform the operation in a hospital or ambulatory surgical setting.

Report 21123 when the operative record supports both a sliding chin osteotomy and augmentation with an interpositional graft. Document the osteotomy, the segment’s repositioning, and the graft placement; simple augmentation without sliding or a sliding osteotomy without grafting points to a different code. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Assistant-at-surgery payment may be available; co-surgeon payment requires supporting documentation, and team-surgery payment 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 Ohio compares for 21123

Across 109 of 109 payment localities, the facility rate for 21123 runs from $701.81 in Arkansas to $961.53 in Alaska. Ohio pays $747.48. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

21123 rates by state

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

See 21123 in every payment locality

How the 21123 rate is calculated

Each of 21123’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 21123

21123 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 21123

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

How 21123 has changed in Ohio

Price 21123 for an earlier date of service

Where the Ohio rate applies

Ohio is a Medicare payment area, not a city. Our Census mapping connects it to 1265 cities and communities in Ohio. Some span more than one payment area; confirm with the service ZIP.

• Aberdeen
• Ada
• Adamsville
• Addyston
• Adelphi
• Adena
• Ai
• Akron

Browse all communities in Ohio

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