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CPT code 40840: Mouth reconstruction, anterior vestibuloplasty2026 Medicare rate & RVUs in New Mexico

Reports surgical deepening of the anterior oral vestibule, typically to address restricted vestibular depth affecting the alveolar ridge or denture-bearing area.

CMS RVU26DEffective Oct 1, 2026One payment locality165 Medicare services in 2024

In New Mexico, Medicare pays $847.76 for 40840 in the office and $554.03 when it’s performed in a hospital or facility.

$847.76Office (non-facility)
$554.03Hospital or facility
−4.0%vs the national office rate ($883.45)

Check a contract rate as a % of Medicare · 40840 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 40840 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in New Mexico
  2. What 40840 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 40840 covers

This procedure deepens the anterior vestibule by releasing and repositioning soft tissue, creating more space between the lip or cheek and the alveolar ridge. Oral and maxillofacial surgeons commonly perform it for a shallow or tethered anterior vestibule when reconstruction is needed, including in patients with an inadequate denture-bearing area. It is generally performed in a surgical setting, with the operative report identifying the treated site and extent of reconstruction.

Choose this code for anterior vestibuloplasty; posterior procedures, reconstruction of the entire arch, or complex work including ridge extension belong to other codes in the family. Medicare payment is restricted to specific circumstances, so documentation should establish the clinical reason for reconstruction and describe the work performed. The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and each other procedure is paid at 50%. Assistant-at-surgery payment may be made; co-surgeons and team surgery are not permitted. Modifier 50 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 New Mexico compares for 40840

Across 109 of 109 payment localities, the office rate for 40840 runs from $785.27 in Arkansas to $1,133.87 in San Benito County, CA. New Mexico pays $847.76. The RVUs are the same everywhere; the geographic indexes change the dollars.

40840 in New Mexico vs other payment areas
  1. New Mexico · this page$847.76
  2. Los Angeles, CA · California$979.24+$131.48
  3. Washington, DC area · District of Columbia$1,000.81+$153.05
  4. Miami, FL · Florida$975.05+$127.29
  5. Chicago, IL · Illinois$947.07+$99.31
  6. Manhattan, NY · New York$1,016.64+$168.88
  7. Alaska · Alaska$1,047.13+$199.37

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

Every other payment area

40840 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$796.23$515.95
ArkansasArkansas$785.27$510.12
ArizonaArizona$860.17$549.78
Bakersfield, CACalifornia$923.20$572.14
Chico, CACalifornia$919.29$568.23
El Centro, CACalifornia$919.52$568.45
Fresno, CACalifornia$919.29$568.23
Hanford, CACalifornia$919.29$568.23

40840 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.

$785.27

$1,047.13

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

View every state and territory as a table
40840 office rate range by state
State / territoryOffice rate rangeLocalities
AK$1,047.131
AL$796.231
AR$785.271
AZ$860.171
CA$919.29–$1,133.8729
CO$911.651
CT$940.541
DC$1,000.811
DE$873.871
FL$882.54–$975.053
GA$833.85–$902.122
GU$938.321
HI$938.321
IA$810.151
ID$816.311
IL$862.04–$947.074
IN$820.681
KS$809.071
KY$819.641
LA$819.44–$857.772
MA$907.62–$995.452
MD$889.19–$1,000.813
ME$823.08–$861.832
MI$842.33–$895.712
MN$867.141
MO$807.74–$857.623
MS$796.521
MT$883.361
NC$830.871
ND$856.471
NE$813.611
NH$899.921
NJ$949.47–$991.732
NM$847.761
NV$876.411
NY$842.96–$1,043.535
OH$836.831
OK$815.531
OR$867.80–$936.542
PA$836.67–$919.732
PR$888.711
RI$902.031
SC$835.591
SD$853.291
TN$813.271
TX$831.62–$910.208
UT$846.411
VA$860.92–$1,000.812
VI$888.711
VT$855.611
WA$905.10–$1,012.642
WI$829.341
WV$832.281
WY$871.641

See 40840 in every payment locality

How the 40840 rate is calculated

Each of 40840’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 · 40840

RVUs × geographic indexes × conversion factor

Office or facility?

Work8.92

8.92 RVUs× 1.000 GPCI

Practice expense16.17

16.17 RVUs× 1.000 GPCI

Malpractice1.36

1.36 RVUs× 1.000 GPCI

Adjusted RVUs

26.4500

Conversion factor

$33.4009

Medicare rate

$883.45

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

The exact New Mexico inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

4,872

Code
40840
Physician work
8.92
Practice expense
16.17
Malpractice
1.36

GPCI2026.csv

77

Locality
New Mexico
Physician work
1.000
Practice expense
0.917
Malpractice
1.201
Office calculation for 40840 in New Mexico
ComponentRVULocality factorAdjusted
Physician work8.92× 1.0008.9200
Practice expense16.17× 0.91714.8279
Malpractice1.36× 1.2011.6334
Total RVUs25.3813
Conversion factor× 33.4009

Office rate, New Mexico$847.76

Office: (8.92 × 1 + 16.17 × 0.917 + 1.36 × 1.201) × $33.4009 = $847.76

Facility: (8.92 × 1 + 6.58 × 0.917 + 1.36 × 1.201) × $33.4009 = $554.03

Open 40840 in the RVU calculator

Payment rules and modifiers for 40840

40840 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 40840

Mouth reconstruction, anterior vestibuloplasty

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)0.09/0.81/0.10Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 40840

Mouth reconstruction, anterior vestibuloplasty

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

40840 without 51 · national office

$883.45

Mouth reconstruction, anterior vestibuloplasty

40840-51 · Second procedure: 50%

$441.73

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 40840

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

Codes related to 40840
CodeHow it relatesOffice range, New Mexico
Same family
40842Mouth reconstruction, extensive reconstructionPosterior unilateral vestibuloplasty rather than anterior reconstruction.$805.82
40843Mouth reconstruction, extensive, with skin graftPosterior bilateral vestibuloplasty; the code identifies the bilateral service.$1,243.44
40844Mouth reconstruction, mucosal graft includedVestibuloplasty involving the entire arch.$1,561.57
40845Mouth reconstruction, with bone graftComplex vestibuloplasty, including ridge extension.$1,432.82

How 40840 has changed in New Mexico

40840 · Office / nonfacility

$847.76

Effective 2026-10-01

The base rate is $50.98 higher than on 2025-10-01, moving from $796.78 to $847.76 (6.4%).

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

    $796.78changed to$847.76

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 9.15 changed to 8.92
    • Practice expense RVU 15.27 changed to 16.17
    • Malpractice RVU 1.38 changed to 1.36
    • Practice expense GPCI 0.908 changed to 0.917
    • Malpractice GPCI 1.172 changed to 1.201

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $828.29changed to$796.78

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 15.52 changed to 15.27
    • Malpractice RVU 1.40 changed to 1.38

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $814.77changed to$828.29

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $839.83changed to$814.77

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 15.53 changed to 15.52
    • Malpractice RVU 1.39 changed to 1.40
    • Practice expense GPCI 0.902 changed to 0.908
    • Malpractice GPCI 1.169 changed to 1.172

  5. January 1, 2023

    RVU23A

    $847.27changed to$839.83

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 15.33 changed to 15.53
    • Malpractice RVU 1.37 changed to 1.39
    • Practice expense GPCI 0.896 changed to 0.902
    • Malpractice GPCI 1.166 changed to 1.169

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $830.81changed to$847.27

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 14.67 changed to 15.33
    • Malpractice RVU 1.30 changed to 1.37

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $828.04changed to$830.81

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 13.53 changed to 14.67
    • Malpractice RVU 1.25 changed to 1.30
    • Practice expense GPCI 0.908 changed to 0.896
    • Malpractice GPCI 1.207 changed to 1.166

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $824.97changed to$828.04

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 12.97 changed to 13.53
    • Malpractice RVU 1.44 changed to 1.25
    • Practice expense GPCI 0.921 changed to 0.908
    • Malpractice GPCI 1.247 changed to 1.207

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $814.79changed to$824.97

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 12.69 changed to 12.97

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $812.57changed to$814.79

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 12.78 changed to 12.69
    • Practice expense GPCI 0.920 changed to 0.921
    • Malpractice GPCI 1.204 changed to 1.247

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $816.05changed to$812.57

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 13.00 changed to 12.78
    • Malpractice RVU 1.46 changed to 1.44
    • Practice expense GPCI 0.919 changed to 0.920
    • Malpractice GPCI 1.161 changed to 1.204

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $817.62changed to$816.05

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 13.11 changed to 13.00
    • Malpractice RVU 1.34 changed to 1.46

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $813.56changed to$817.62

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $797.98changed to$813.56

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 12.97 changed to 13.11
    • Malpractice RVU 1.13 changed to 1.34
    • Practice expense GPCI 0.918 changed to 0.919
    • Malpractice GPCI 1.079 changed to 1.161

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $795.13changed to$797.98

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 14.24 changed to 12.97
    • Malpractice RVU 1.18 changed to 1.13
    • Practice expense GPCI 0.916 changed to 0.918
    • Malpractice GPCI 0.997 changed to 1.079

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $795.13

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$847.76$554.03RVU26D
2026-07-01$847.76$554.03RVU26C
2026-04-01$847.76$554.03RVU26B
2026-01-01$847.76$554.03RVU26A
2025-10-01$796.78$599.11RVU25D
2025-07-01$796.78$599.11RVU25C
2025-04-01$796.78$599.11RVU25B
2025-01-01$796.78$599.11RVU25A
2024-10-01$828.29$617.02RVU24D
2024-07-01$828.29$617.02RVU24C
2024-04-01$828.29$617.02RVU24B
2024-03-09$828.29$617.02RVU24AR
2024-01-01$814.77$606.95RVU24A
2023-10-01$839.83$624.03RVU23D
2023-07-01$839.83$624.03RVU23C
2023-04-01$839.83$624.03RVU23B
2023-01-01$839.83$624.03RVU23A
2022-10-01$847.27$627.12RVU22D
2022-07-01$847.27$627.12RVU22C
2022-04-01$847.27$627.12RVU22B
2022-01-01$847.27$627.12RVU22A
2021-10-01$830.81$618.21RVU21D
2021-07-01$830.81$618.21RVU21C
2021-04-01$830.81$618.21RVU21B
2021-01-01$830.81$618.21RVU21A
2020-10-01$828.04$634.37RVU20D
2020-07-01$828.04$634.37RVU20C
2020-04-01$828.04$634.37RVU20B
2020-01-01$828.04$634.37RVU20A
2019-10-01$824.97$643.41RVU19D
2019-07-01$824.97$643.41RVU19C
2019-04-01$824.97$643.41RVU19B
2019-01-01$824.97$643.41RVU19A
2018-10-01$814.79$641.38RVU18D
2018-07-01$814.79$641.38RVU18C
2018-04-01$814.79$641.38RVU18B
2018-01-01$814.79$641.38RVU18AR1
2017-10-01$812.57$641.87RVU17D
2017-07-01$812.57$641.87RVU17C
2017-04-01$812.57$641.87RVU17B
2017-01-01$812.57$641.87RVU17A
2016-10-01$816.05$643.64RVU16D
2016-07-01$816.05$643.64RVU16C
2016-04-01$816.05$643.64RVU16B
2016-01-01$816.05$643.64RVU16A
2015-10-01$817.62$642.93RVU15D
2015-07-01$817.62$642.93RVU15C
2015-04-01$813.56$639.73RVU15B
2015-01-01$813.56$639.73RVU15A
2014-10-01$797.98$627.63RVU14D
2014-07-01$797.98$627.63RVU14C
2014-04-01$797.98$627.63RVU14B
2014-01-01$797.98$627.63RVU14A
2013-10-01$795.13$616.55RVU13D
2013-07-01$795.13$616.55RVU13C
2013-04-01$795.13$616.55RVU13B
2013-01-01$795.13$616.55RVU13AR

Price 40840 for an earlier date of service

Where the New Mexico rate applies

New Mexico is a Medicare payment area, not a city. Our Census mapping connects it to 528 cities and communities in New Mexico. Some span more than one payment area; confirm with the service ZIP.

  • Abeytas
  • Abiquiu
  • Acomita Lake
  • Adelino
  • Agua Fria
  • Alamillo
  • Alamo
  • Alamogordo

Browse all communities in New Mexico

40840 billing questions

When should 40840 be selected instead of a posterior vestibuloplasty code?

Use 40840 for reconstruction of the anterior vestibule. Posterior procedures are reported with the applicable posterior code based on their site and extent.

Can modifier 50 be reported for bilateral anterior work?

No. The CMS bilateral adjustment does not apply to this code, and modifier 50 is inappropriate.

What documentation supports reporting 40840?

Document the clinical need for anterior vestibular reconstruction, the specific site, and the operative steps and extent of tissue release or repositioning.

Does the global period include postoperative visits?

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

Can an assistant surgeon be reported?

CMS permits payment for an assistant at surgery for this code. Co-surgeons and team surgery are not permitted.

How are other procedures in the same session paid?

The highest-valued procedure is paid in full, and each other procedure performed in the same session is paid at 50% under the standard multiple-procedure reduction.

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 40840PPRRVU2026_Oct_nonQPP.csv, line 4,872 (RVU26D)
Geographic factors for New MexicoGPCI2026.csv, line 77 (RVU26D)

Open CMS sourceHow we calculate rates

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