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CPT code 21120: Chin augmentation, augmentation without sliding osteotomy2026 Medicare rate & RVUs in Iowa

Reports surgical chin augmentation using implanted or grafted material when the surgeon increases chin projection without performing a sliding genioplasty.

CMS RVU26DEffective Oct 1, 2026One payment locality

In Iowa, Medicare pays $652.83 for 21120 in the office and $445.31 when it’s performed in a hospital or facility.

$652.83Office (non-facility)
$445.31Hospital or facility
−8.8%vs the national office rate ($715.45)

Check a contract rate as a % of Medicare · 21120 nationwide

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

We’ll open 21120 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Iowa
  2. What 21120 covers
  3. Compared with other areas
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Related codes
  8. Rate history
  9. Where it applies
  10. Billing questions
  11. Sources

What 21120 covers

This procedure increases chin projection or contour by adding material to the chin, such as an implant or graft. It is typically performed by an oral and maxillofacial surgeon, plastic surgeon, or facial plastic surgeon to address a retrusive or under-projected chin. The operative work is augmentation of the chin itself, rather than repositioning a segment of the chin bone through a sliding osteotomy.

Select the code when the operative report supports chin augmentation and identifies the material and technique. Distinguish it from sliding genioplasty codes, which involve osteotomy and repositioning, and from mandibular augmentation directed at a broader jaw area. Medicare assigns a 90-day global period; the day-before preoperative visit and 90 days of related postoperative care are 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% reduction. Assistant-at-surgery payment is restricted by statute; co-surgeons are paid only with 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 Iowa compares for 21120

Across 109 of 109 payment localities, the office rate for 21120 runs from $627.40 in Arkansas to $948.72 in San Benito County, CA. Iowa pays $652.83. The RVUs are the same everywhere; the geographic indexes change the dollars.

21120 in Iowa vs other payment areas
  1. Iowa · this page$652.83
  2. Los Angeles, CA · California$806.85+$154.02
  3. Washington, DC area · District of Columbia$820.22+$167.39
  4. Miami, FL · Florida$783.70+$130.87
  5. Chicago, IL · Illinois$759.00+$106.17
  6. Manhattan, NY · New York$828.11+$175.28
  7. Alaska · Alaska$818.37+$165.54

Other areas in Iowa first, then benchmark localities. Bars start at $0.

Every other payment area

21120 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$637.27$438.83
ArkansasArkansas$627.40$432.59
ArizonaArizona$694.94$475.18
Bakersfield, CACalifornia$756.38$507.82
Chico, CACalifornia$753.81$505.24
El Centro, CACalifornia$753.96$505.40
Fresno, CACalifornia$753.81$505.24
Hanford, CACalifornia$753.81$505.24

21120 rates by state

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

MEWIVTNHMTNDMNMINYMARIWAIDWYSDIAILINOHPANJCTORNVUTCONEMOKYWVVAMDDECAAZNMKSOKARTNNCSCDCTXLAMSALGAFLAKHI

Explore a state

Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

$627.40

$851.27

Color shows the midpoint of each state’s locality range.

View every state and territory as a table
21120 office rate range by state
State / territoryOffice rate rangeLocalities
AK$818.371
AL$637.271
AR$627.401
AZ$694.941
CA$753.81–$948.7229
CO$743.911
CT$765.161
DC$820.221
DE$706.951
FL$708.08–$783.703
GA$665.33–$730.422
GU$773.571
HI$773.571
IA$652.831
ID$657.761
IL$687.62–$759.004
IN$661.791
KS$650.411
KY$655.261
LA$654.50–$689.022
MA$739.36–$819.502
MD$720.81–$820.223
ME$662.33–$699.442
MI$674.28–$718.372
MN$708.861
MO$643.07–$690.613
MS$635.331
MT$715.391
NC$669.601
ND$697.191
NE$656.391
NH$732.871
NJ$772.79–$810.992
NM$678.571
NV$710.831
NY$680.39–$850.445
OH$670.561
OK$653.091
OR$704.25–$767.812
PA$671.22–$745.632
PR$720.691
RI$732.401
SC$671.421
SD$695.041
TN$654.021
TX$666.58–$742.368
UT$681.191
VA$697.59–$820.222
VI$720.691
VT$695.081
WA$737.75–$835.872
WI$672.401
WV$660.741
WY$707.461

See 21120 in every payment locality

How the 21120 rate is calculated

Each of 21120’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.

How the rate is built · 21120

RVUs × geographic indexes × conversion factor

Office or facility?

Work4.97

4.97 RVUs× 1.000 GPCI

Practice expense15.53

15.53 RVUs× 1.000 GPCI

Malpractice0.92

0.92 RVUs× 1.000 GPCI

Adjusted RVUs

21.4200

Conversion factor

$33.4009

Medicare rate

$715.45

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

The exact Iowa inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

1,877

Code
21120
Physician work
4.97
Practice expense
15.53
Malpractice
0.92

GPCI2026.csv

53

Locality
Iowa
Physician work
1.000
Practice expense
0.915
Malpractice
0.397
Office calculation for 21120 in Iowa
ComponentRVULocality factorAdjusted
Physician work4.97× 1.0004.9700
Practice expense15.53× 0.91514.2099
Malpractice0.92× 0.3970.3652
Total RVUs19.5452
Conversion factor× 33.4009

Office rate, Iowa$652.83

Office: (4.97 × 1 + 15.53 × 0.915 + 0.92 × 0.397) × $33.4009 = $652.83

Facility: (4.97 × 1 + 8.74 × 0.915 + 0.92 × 0.397) × $33.4009 = $445.31

Open 21120 in the RVU calculator

Payment rules and modifiers for 21120

21120 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 21120

Chin augmentation, augmentation without sliding osteotomy

RuleCMS valueWhat it means
Global period090Major surgery: the day before, the day of, and 90 days after are included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)1Not paid (statutory restriction).
Co-surgeons (62)1Permitted with supporting documentation.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.10/0.69/0.21Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 21120

Chin augmentation, augmentation without sliding osteotomy

90-day global period ends

Dec 30, 2026

Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).

Visit on Oct 31, 2026

Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.

  • 24Unrelated E/M visit by the same physician
  • 79Unrelated procedure (starts its own global period)
  • 58Staged, more extensive, or therapy procedure that was planned
  • 78Unplanned return to the operating room for a related complication
SurgeryVisit
Sep 23, 2026Jan 10, 2027

Pre-op dayGlobal period

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

21120 without 51 · national office

$715.45

Chin augmentation, augmentation without sliding osteotomy

21120-51 · Second procedure: 50%

$357.73

When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).

When to use modifier 51

Codes related to 21120

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

Codes related to 21120
CodeHow it relatesOffice range, Iowa
Same family
21121Sliding genioplasty, single-piece osteotomySliding genioplasty with a single osteotomy, rather than augmentation alone.$601.29
21122Sliding genioplasty, two or more osteotomiesSliding genioplasty involving multiple osteotomies.No office rate
21123Chin augmentation, sliding osteotomy with graftSliding genioplasty that also includes augmentation.No office rate
Used instead
21125Mandibular augmentation, prosthetic materialMandibular augmentation with a prosthetic implant when the treated area is broader than the chin.$2,383.92
21127Mandibular augmentation, with bone graftMandibular augmentation using bone graft when the treated area is broader than the chin.$3,641.13

How 21120 has changed in Iowa

21120 · Office / nonfacility

$652.83

Effective 2026-10-01

The base rate is $65.83 higher than on 2025-10-01, moving from $587.00 to $652.83 (11.2%).

It is unchanged from the immediately preceding available release, effective 2026-07-01.

Base rate by release · bars start at $0 · select a bar to compare

One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.

What changed, release by release

  1. January 1, 2026

    RVU26A

    $587.00changed to$652.83

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 5.10 changed to 4.97
    • Practice expense RVU 13.83 changed to 15.53
    • Practice expense GPCI 0.913 changed to 0.915
    • Malpractice GPCI 0.457 changed to 0.397

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $606.36changed to$587.00

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 13.89 changed to 13.83
    • Malpractice RVU 0.95 changed to 0.92

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $596.46changed to$606.36

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $616.61changed to$596.46

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 13.95 changed to 13.89
    • Malpractice RVU 0.91 changed to 0.95
    • Practice expense GPCI 0.910 changed to 0.913
    • Malpractice GPCI 0.441 changed to 0.457

  5. January 1, 2023

    RVU23A

    $624.24changed to$616.61

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 13.82 changed to 13.95
    • Malpractice RVU 0.95 changed to 0.91
    • Practice expense GPCI 0.907 changed to 0.910
    • Malpractice GPCI 0.425 changed to 0.441

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $641.80changed to$624.24

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 14.23 changed to 13.82
    • Malpractice RVU 0.91 changed to 0.95

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $630.74changed to$641.80

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 13.23 changed to 14.23
    • Malpractice RVU 0.89 changed to 0.91
    • Malpractice GPCI 0.424 changed to 0.425

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $633.46changed to$630.74

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 13.36 changed to 13.23
    • Malpractice RVU 0.85 changed to 0.89
    • Malpractice GPCI 0.423 changed to 0.424

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $644.50changed to$633.46

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 13.71 changed to 13.36
    • Malpractice RVU 0.87 changed to 0.85

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $561.99changed to$644.50

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 11.29 changed to 13.71
    • Malpractice RVU 0.82 changed to 0.87
    • Practice expense GPCI 0.902 changed to 0.907
    • Malpractice GPCI 0.458 changed to 0.423

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $615.01changed to$561.99

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 13.00 changed to 11.29
    • Malpractice RVU 0.87 changed to 0.82
    • Practice expense GPCI 0.896 changed to 0.902
    • Malpractice GPCI 0.493 changed to 0.458

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $561.82changed to$615.01

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 11.29 changed to 13.00
    • Malpractice RVU 0.85 changed to 0.87

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $559.02changed to$561.82

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $612.05changed to$559.02

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 12.92 changed to 11.29
    • Malpractice RVU 0.97 changed to 0.85
    • Practice expense GPCI 0.892 changed to 0.896
    • Malpractice GPCI 0.475 changed to 0.493

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $578.79changed to$612.05

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 12.91 changed to 12.92
    • Malpractice RVU 1.01 changed to 0.97
    • Practice expense GPCI 0.887 changed to 0.892
    • Malpractice GPCI 0.456 changed to 0.475

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $578.79

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$652.83$445.31RVU26D
2026-07-01$652.83$445.31RVU26C
2026-04-01$652.83$445.31RVU26B
2026-01-01$652.83$445.31RVU26A
2025-10-01$587.00$453.22RVU25D
2025-07-01$587.00$453.22RVU25C
2025-04-01$587.00$453.22RVU25B
2025-01-01$587.00$453.22RVU25A
2024-10-01$606.36$465.64RVU24D
2024-07-01$606.36$465.64RVU24C
2024-04-01$606.36$465.64RVU24B
2024-03-09$606.36$465.64RVU24AR
2024-01-01$596.46$458.04RVU24A
2023-10-01$616.61$471.98RVU23D
2023-07-01$616.61$471.98RVU23C
2023-04-01$616.61$471.98RVU23B
2023-01-01$616.61$471.98RVU23A
2022-10-01$624.24$476.41RVU22D
2022-07-01$624.24$476.41RVU22C
2022-04-01$624.24$476.41RVU22B
2022-01-01$624.24$476.41RVU22A
2021-10-01$641.80$490.84RVU21D
2021-07-01$641.80$490.84RVU21C
2021-04-01$641.80$490.84RVU21B
2021-01-01$641.80$490.84RVU21A
2020-10-01$630.74$492.93RVU20D
2020-07-01$630.74$492.93RVU20C
2020-04-01$630.74$492.93RVU20B
2020-01-01$630.74$492.93RVU20A
2019-10-01$633.46$500.10RVU19D
2019-07-01$633.46$500.10RVU19C
2019-04-01$633.46$500.10RVU19B
2019-01-01$633.46$500.10RVU19A
2018-10-01$644.50$512.26RVU18D
2018-07-01$644.50$512.26RVU18C
2018-04-01$644.50$512.26RVU18B
2018-01-01$644.50$512.26RVU18AR1
2017-10-01$561.99$449.66RVU17D
2017-07-01$561.99$449.66RVU17C
2017-04-01$561.99$449.66RVU17B
2017-01-01$561.99$449.66RVU17A
2016-10-01$615.01$489.57RVU16D
2016-07-01$615.01$489.57RVU16C
2016-04-01$615.01$489.57RVU16B
2016-01-01$615.01$489.57RVU16A
2015-10-01$561.82$451.06RVU15D
2015-07-01$561.82$451.06RVU15C
2015-04-01$559.02$448.82RVU15B
2015-01-01$559.02$448.82RVU15A
2014-10-01$612.05$489.98RVU14D
2014-07-01$612.05$489.98RVU14C
2014-04-01$612.05$489.98RVU14B
2014-01-01$612.05$489.98RVU14A
2013-10-01$578.79$460.19RVU13D
2013-07-01$578.79$460.19RVU13C
2013-04-01$578.79$460.19RVU13B
2013-01-01$578.79$460.19RVU13AR

Price 21120 for an earlier date of service

Where the Iowa rate applies

Iowa is a Medicare payment area, not a city. Our Census mapping connects it to 1026 cities and communities in Iowa. Some span more than one payment area; confirm with the service ZIP.

  • Ackley
  • Ackworth
  • Adair
  • Adel
  • Afton
  • Agency
  • Ainsworth
  • Akron

Browse all communities in Iowa

21120 billing questions

How is this different from a sliding genioplasty?

This code describes chin augmentation with added material. Sliding genioplasty codes describe cutting and repositioning the chin bone, with the code choice depending on the osteotomy and augmentation performed.

Can this code be reported with a sliding genioplasty?

A sliding genioplasty that also includes augmentation is represented by the specific combined code, 21123. Do not separately report 21120 for the same augmentation work included in that procedure.

What should the operative report document?

Document the chin-specific purpose, the material used, its placement, and the technique. The report should make clear that the work augmented the chin rather than repositioning a bony segment.

Are related postoperative visits included?

Yes. The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.

How does Medicare handle another procedure performed in the same session?

The highest-valued procedure is paid in full, and other procedures in that session are subject to the standard multiple-procedure reduction.

Can an assistant or co-surgeon be reported?

Assistant-at-surgery payment is restricted by statute. Co-surgeons are paid only with supporting documentation; team surgery is not permitted.

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

Show the CMS file lines behind this rate
RVUs for 21120PPRRVU2026_Oct_nonQPP.csv, line 1,877 (RVU26D)
Geographic factors for IowaGPCI2026.csv, line 53 (RVU26D)

Open CMS sourceHow we calculate rates

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