Billing code 21125: Mandibular augmentationMedicare rate & RVUs

Reports mandibular augmentation using prosthetic material to enlarge or restore jaw contour, rather than augmentation with bone graft or repositioning by osteotomy.

CMS RVU26DEffective Oct 1, 2026109 payment localities

Medicare pays $2,595.58 for 21125 nationally in the office and $605.56 in a hospital or facility. Local office rates run $2,265.30–$3,589.45.

Medicare rate · 21125

Mandibular augmentation

Work RVUs
10.53
Total RVUs
77.71
Global days
090

National rate · 2026

$2,595.58

Office setting, before claim adjustments.

See every locality for 21125 →Billed by an NP, PA or therapist? →

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

On this page 10 sections
  1. Medicare rate
  2. What 21125 covers
  3. By payment locality
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Similar codes
  8. Related codes
  9. Billing questions
  10. Sources

What 21125 covers

Mandibular augmentation with a prosthetic implant enlarges or restores jaw contour by placing alloplastic material along a deficient segment of the mandible. It is distinct from bone-graft augmentation and from an osteotomy that repositions native jaw segments. Oral and maxillofacial surgeons and plastic surgeons typically perform the procedure in an operating room for reconstructive or contour-correction needs, using an implant selected for the documented mandibular deficiency.

Report 21125 when the operative service augments the mandible with prosthetic material. The note should identify the treated mandibular area, the indication, the implant and its placement, and the work performed. CMS assigns a 90-day global period, including the day-before preoperative visit and related postoperative care through day 90. 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. Assistant-at-surgery payment may be made; 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.

Where 21125 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 payment localities

$2265.30 to $3589.45

$2265.30$2927.38$3589.45
One dot per payment locality, office / nonfacility. Hover a dot to see the locality; select it to open that rate.

109 of 109 payment localities

21125 office and facility rates by payment locality
Payment localityOfficeFacility
Alabama$2,302.61$561.34
Alaska*$2,896.52$777.14
Arizona$2,521.46$593.12
Arkansas$2,265.30$555.86
Atlanta$2,640.02$618.15
Austin$2,719.48$614.03
Bakersfield$2,798.00$616.93
Baltimore/Surr. Cntys$2,771.64$636.34
Beaumont$2,394.40$583.48
Brazoria$2,569.68$597.56

21125 rates by state

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

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.

$2,265.30

$3,191.90

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

View every state and territory as a table
21125 office rate range by state
State / territoryOffice rate rangeLocalities
AK$2,896.521
AL$2,302.611
AR$2,265.301
AZ$2,521.461
CA$2,794.34–$3,589.4529
CO$2,731.971
CT$2,780.771
DC$3,011.361
DE$2,566.821
FL$2,518.96–$2,747.723
GA$2,365.37–$2,640.022
GU$2,880.441
HI$2,880.441
IA$2,383.921
ID$2,398.011
IL$2,426.64–$2,688.744
IN$2,413.961
KS$2,364.011
KY$2,347.561
LA$2,340.49–$2,471.082
MA$2,709.79–$3,033.032
MD$2,622.23–$3,011.363
ME$2,404.03–$2,560.842
MI$2,409.10–$2,546.192
MN$2,631.031
MO$2,290.46–$2,489.903
MS$2,278.761
MT$2,595.501
NC$2,433.361
ND$2,571.581
NE$2,400.781
NH$2,680.871
NJ$2,816.29–$2,973.042
NM$2,420.821
NV$2,591.041
NY$2,473.41–$3,069.185
OH$2,404.211
OK$2,350.801
OR$2,574.77–$2,835.452
PA$2,412.68–$2,700.062
PR$2,619.221
RI$2,670.621
SC$2,422.061
SD$2,568.751
TN$2,376.361
TX$2,394.40–$2,719.488
UT$2,459.251
VA$2,546.24–$3,011.362
VI$2,619.221
VT$2,553.581
WA$2,707.28–$3,105.962
WI$2,475.071
WV$2,324.351
WY$2,585.081

How the 21125 rate is calculated

Each of 21125’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 · 21125

RVUs × geographic indexes × conversion factor

Work10.53

10.53 RVUs× 1.000 GPCI

Practice expense65.97

65.97 RVUs× 1.000 GPCI

Malpractice1.21

1.21 RVUs× 1.000 GPCI

Adjusted RVUs

77.7100

Conversion factor

$33.4009

Medicare rate

$2,595.58

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

Payment rules and modifiers for 21125

21125 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 21125

Mandibular augmentation

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)2Paid.
Co-surgeons (62)0Not permitted.
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 · 21125

Mandibular augmentation

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

21125 without 51 · national office

$2,595.58

Mandibular augmentation

21125-51 · Second procedure: 50%

$1,297.79

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

21125 compared with similar codes

Compare codes · National

4 codes, side by side

  • 21125

    Mandibular augmentation10.53 wRVU

    $2,595.58

  • 21127

    Mandibular augmentation12.13 wRVU

    $3,968.03+$1,372.45

  • 21120

    Chin augmentation4.97 wRVU

    $715.45−$1,880.13

  • 21123

    Chin augmentation11.06 wRVU

    Not priced

How to choose

21127Mandibular augmentation
Choose 21125 for augmentation with prosthetic material; 21127 describes mandibular augmentation using bone graft.
21120Chin augmentation
21120 describes augmentation performed as a genioplasty. 21125 describes prosthetic augmentation of the mandible rather than chin-focused genioplasty.
21123Chin augmentation
21123 includes a sliding osteotomy along with augmentation. 21125 describes mandibular augmentation with prosthetic material without that osteotomy service.

21125 billing questions

How does 21125 differ from 21127?

21125 describes mandibular augmentation with prosthetic material. 21127 is the related augmentation code for bone grafting.

When is 21120 a better fit?

Use 21120 for augmentation performed as a genioplasty, such as chin augmentation. Use 21125 when the documented service is mandibular augmentation with prosthetic material.

Can 21125 be reported with modifier 50?

No. CMS identifies bilateral adjustment as inappropriate for this code.

What postoperative care is included?

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

Can an assistant surgeon be paid for 21125?

CMS indicates that assistant-at-surgery payment may be made. Co-surgeons and team surgery are not permitted.

What documentation supports 21125?

Document the mandibular area treated, the indication for augmentation, the prosthetic material and its placement, and the operative work performed.

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 21125PPRRVU2026_Oct_nonQPP.csv, line 1,881 (RVU26D)

Open CMS sourceHow we calculate rates

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