CPT code 40845: Mouth reconstruction, with bone graft2026 Medicare rate & RVUs in Connecticut

Reports floor-of-mouth reconstruction using a bone graft when the documented procedure and clinical circumstances support this reconstructive service.

CMS RVU26DEffective Oct 1, 2026One payment locality644 Medicare services in 2024

In Connecticut, Medicare pays $1,566.99 for 40845 in the office and $1,106.18 when it’s performed in a hospital or facility.

$1,566.99Office (non-facility)
$1,106.18Hospital or facility
+6.1%vs the national office rate ($1,476.99)

Check a contract rate as a % of Medicare · 40845 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 40845 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Connecticut
  2. What 40845 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 40845 covers

This service reconstructs the floor of the mouth using a bone graft. Oral and maxillofacial surgeons and other surgeons qualified in oral reconstruction typically perform it in a hospital operating room or outpatient surgical setting. The operative report should identify the site, reconstructive work, and bone graft used, rather than describing only lesion removal or closure of an acute wound.

Select 40845 when the reconstruction uses a bone graft; codes 40840–40844 distinguish other approaches by the extent of reconstruction and whether a skin graft is used. Medicare coverage is restricted to specific circumstances, so documentation should support the indication and work performed. The 90-day global period includes the day-before preoperative visit and related postoperative care. For multiple procedures in one session, the highest-valued procedure is paid in full and others are subject to the standard 50% reduction. Modifier 50 is inappropriate. An assistant at surgery requires documented medical necessity; 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.

How Connecticut compares for 40845

Across 109 of 109 payment localities, the office rate for 40845 runs from $1,326.05 in Arkansas to $1,837.24 in San Benito County, CA. Connecticut pays $1,566.99. The RVUs are the same everywhere; the geographic indexes change the dollars.

40845 in Connecticut vs other payment areas
  1. Connecticut · this page$1,566.99
  2. Los Angeles, CA · California$1,610.06+$43.07
  3. Washington, DC area · District of Columbia$1,655.73+$88.74
  4. Miami, FL · Florida$1,648.37+$81.38
  5. Chicago, IL · Illinois$1,604.12+$37.13
  6. Manhattan, NY · New York$1,693.41+$126.42
  7. Alaska · Alaska$1,800.09+$233.10

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

Every other payment area

40845 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$1,342.81$968.43
ArkansasArkansas$1,326.05$958.51
ArizonaArizona$1,440.37$1,025.77
Bakersfield, CACalifornia$1,525.49$1,056.55
Chico, CACalifornia$1,517.52$1,048.58
El Centro, CACalifornia$1,517.98$1,049.04
Fresno, CACalifornia$1,517.52$1,048.58
Hanford, CACalifornia$1,517.52$1,048.58

40845 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.

$1,326.05

$1,800.09

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

View every state and territory as a table
40845 office rate range by state
State / territoryOffice rate rangeLocalities
AK$1,800.091
AL$1,342.811
AR$1,326.051
AZ$1,440.371
CA$1,517.52–$1,837.2429
CO$1,512.731
CT$1,566.991
DC$1,655.731
DE$1,461.811
FL$1,489.99–$1,648.373
GA$1,413.13–$1,509.412
GU$1,541.691
HI$1,541.691
IA$1,357.471
ID$1,368.221
IL$1,463.06–$1,604.124
IN$1,374.701
KS$1,358.991
KY$1,385.431
LA$1,386.36–$1,444.962
MA$1,508.42–$1,639.122
MD$1,484.82–$1,655.733
ME$1,381.91–$1,436.302
MI$1,423.19–$1,513.592
MN$1,434.201
MO$1,370.47–$1,440.953
MS$1,348.141
MT$1,476.801
NC$1,393.281
ND$1,422.431
NE$1,361.761
NH$1,496.441
NJ$1,580.54–$1,643.692
NM$1,432.821
NV$1,462.401
NY$1,411.98–$1,738.675
OH$1,412.081
OK$1,375.771
OR$1,446.69–$1,547.322
PA$1,410.06–$1,537.002
PR$1,483.911
RI$1,503.951
SC$1,405.871
SD$1,416.001
TN$1,365.801
TX$1,402.56–$1,511.548
UT$1,422.351
VA$1,437.16–$1,655.732
VI$1,483.911
VT$1,424.071
WA$1,503.22–$1,662.992
WI$1,381.741
WV$1,417.731
WY$1,453.111

See 40845 in every payment locality

How the 40845 rate is calculated

Each of 40845’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 · 40845

RVUs × geographic indexes × conversion factor

Office or facility?

Work18.88

18.88 RVUs× 1.000 GPCI

Practice expense22.59

22.59 RVUs× 1.000 GPCI

Malpractice2.75

2.75 RVUs× 1.000 GPCI

Adjusted RVUs

44.2200

Conversion factor

$33.4009

Medicare rate

$1,476.99

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

The exact Connecticut inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

4,876

Code
40845
Physician work
18.88
Practice expense
22.59
Malpractice
2.75

GPCI2026.csv

38

Locality
Connecticut
Physician work
1.020
Practice expense
1.077
Malpractice
1.210
Office calculation for 40845 in Connecticut
ComponentRVULocality factorAdjusted
Physician work18.88× 1.02019.2576
Practice expense22.59× 1.07724.3294
Malpractice2.75× 1.2103.3275
Total RVUs46.9145
Conversion factor× 33.4009

Office rate, Connecticut$1566.99

Office: (18.88 × 1.02 + 22.59 × 1.077 + 2.75 × 1.21) × $33.4009 = $1566.99

Facility: (18.88 × 1.02 + 9.78 × 1.077 + 2.75 × 1.21) × $33.4009 = $1106.18

Open 40845 in the RVU calculator

Payment rules and modifiers for 40845

40845 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 40845

Mouth reconstruction, with bone graft

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)0Not paid without supporting documentation.
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 · 40845

Mouth reconstruction, with bone graft

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

40845 without 51 · national office

$1,476.99

Mouth reconstruction, with bone graft

40845-51 · Second procedure: 50%

$738.50

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

How 40845 has changed in Connecticut

40845 · Office / nonfacility

$1566.99

Effective 2026-10-01

The base rate is $28.77 higher than on 2025-10-01, moving from $1538.22 to $1566.99 (1.9%).

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

    $1538.22changed to$1566.99

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 19.36 changed to 18.88
    • Practice expense RVU 22.41 changed to 22.59
    • Work GPCI 1.022 changed to 1.020
    • Practice expense GPCI 1.091 changed to 1.077
    • Malpractice GPCI 1.207 changed to 1.210

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $1582.93changed to$1538.22

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 22.42 changed to 22.41
    • Malpractice RVU 2.74 changed to 2.75

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $1557.10changed to$1582.93

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $1610.50changed to$1557.10

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 22.40 changed to 22.42
    • Malpractice RVU 2.71 changed to 2.74
    • Work GPCI 1.030 changed to 1.022
    • Practice expense GPCI 1.102 changed to 1.091
    • Malpractice GPCI 1.070 changed to 1.207
  5. January 1, 2023

    RVU23A

    $1637.81changed to$1610.50

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 22.19 changed to 22.40
    • Work GPCI 1.037 changed to 1.030
    • Practice expense GPCI 1.114 changed to 1.102
    • Malpractice GPCI 0.934 changed to 1.070

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $1628.63changed to$1637.81

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 21.68 changed to 22.19
    • Malpractice RVU 2.62 changed to 2.71

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $1630.58changed to$1628.63

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 20.13 changed to 21.68
    • Malpractice RVU 2.61 changed to 2.62
    • Work GPCI 1.029 changed to 1.037
    • Practice expense GPCI 1.113 changed to 1.114
    • Malpractice GPCI 1.094 changed to 0.934

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $1643.25changed to$1630.58

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 19.91 changed to 20.13
    • Malpractice RVU 2.94 changed to 2.61
    • Work GPCI 1.021 changed to 1.029
    • Practice expense GPCI 1.112 changed to 1.113
    • Malpractice GPCI 1.255 changed to 1.094

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $1621.33changed to$1643.25

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 19.43 changed to 19.91
    • Malpractice RVU 2.92 changed to 2.94

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $1637.25changed to$1621.33

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 19.87 changed to 19.43
    • Malpractice RVU 2.91 changed to 2.92
    • Work GPCI 1.023 changed to 1.021
    • Practice expense GPCI 1.117 changed to 1.112
    • Malpractice GPCI 1.244 changed to 1.255

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $1647.40changed to$1637.25

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 20.14 changed to 19.87
    • Malpractice RVU 2.93 changed to 2.91
    • Work GPCI 1.024 changed to 1.023
    • Practice expense GPCI 1.121 changed to 1.117
    • Malpractice GPCI 1.232 changed to 1.244

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $1657.54changed to$1647.40

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 20.20 changed to 20.14
    • Malpractice RVU 2.97 changed to 2.93

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $1649.29changed to$1657.54

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $1627.30changed to$1649.29

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 20.32 changed to 20.20
    • Malpractice RVU 2.37 changed to 2.97
    • Practice expense GPCI 1.116 changed to 1.121
    • Malpractice GPCI 1.234 changed to 1.232

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $1622.38changed to$1627.30

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 22.34 changed to 20.32
    • Malpractice RVU 2.48 changed to 2.37
    • Practice expense GPCI 1.110 changed to 1.116
    • Malpractice GPCI 1.235 changed to 1.234

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $1622.38

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$1,566.99$1,106.18RVU26D
2026-07-01$1,566.99$1,106.18RVU26C
2026-04-01$1,566.99$1,106.18RVU26B
2026-01-01$1,566.99$1,106.18RVU26A
2025-10-01$1,538.22$1,253.43RVU25D
2025-07-01$1,538.22$1,253.43RVU25C
2025-04-01$1,538.22$1,253.43RVU25B
2025-01-01$1,538.22$1,253.43RVU25A
2024-10-01$1,582.93$1,281.87RVU24D
2024-07-01$1,582.93$1,281.87RVU24C
2024-04-01$1,582.93$1,281.87RVU24B
2024-03-09$1,582.93$1,281.87RVU24AR
2024-01-01$1,557.10$1,260.94RVU24A
2023-10-01$1,610.50$1,299.05RVU23D
2023-07-01$1,610.50$1,299.05RVU23C
2023-04-01$1,610.50$1,299.05RVU23B
2023-01-01$1,610.50$1,299.05RVU23A
2022-10-01$1,637.81$1,311.67RVU22D
2022-07-01$1,637.81$1,311.67RVU22C
2022-04-01$1,637.81$1,311.67RVU22B
2022-01-01$1,637.81$1,311.67RVU22A
2021-10-01$1,628.63$1,305.62RVU21D
2021-07-01$1,628.63$1,305.62RVU21C
2021-04-01$1,628.63$1,305.62RVU21B
2021-01-01$1,628.63$1,305.62RVU21A
2020-10-01$1,630.58$1,338.96RVU20D
2020-07-01$1,630.58$1,338.96RVU20C
2020-04-01$1,630.58$1,338.96RVU20B
2020-01-01$1,630.58$1,338.96RVU20A
2019-10-01$1,643.25$1,364.32RVU19D
2019-07-01$1,643.25$1,364.32RVU19C
2019-04-01$1,643.25$1,364.32RVU19B
2019-01-01$1,643.25$1,364.32RVU19A
2018-10-01$1,621.33$1,357.12RVU18D
2018-07-01$1,621.33$1,357.12RVU18C
2018-04-01$1,621.33$1,357.12RVU18B
2018-01-01$1,621.33$1,357.12RVU18AR1
2017-10-01$1,637.25$1,371.47RVU17D
2017-07-01$1,637.25$1,371.47RVU17C
2017-04-01$1,637.25$1,371.47RVU17B
2017-01-01$1,637.25$1,371.47RVU17A
2016-10-01$1,647.40$1,377.28RVU16D
2016-07-01$1,647.40$1,377.28RVU16C
2016-04-01$1,647.40$1,377.28RVU16B
2016-01-01$1,647.40$1,377.28RVU16A
2015-10-01$1,657.54$1,386.04RVU15D
2015-07-01$1,657.54$1,386.04RVU15C
2015-04-01$1,649.29$1,379.14RVU15B
2015-01-01$1,649.29$1,379.14RVU15A
2014-10-01$1,627.30$1,358.64RVU14D
2014-07-01$1,627.30$1,358.64RVU14C
2014-04-01$1,627.30$1,358.64RVU14B
2014-01-01$1,627.30$1,358.64RVU14A
2013-10-01$1,622.38$1,339.14RVU13D
2013-07-01$1,622.38$1,339.14RVU13C
2013-04-01$1,622.38$1,339.14RVU13B
2013-01-01$1,622.38$1,339.14RVU13AR

Price 40845 for an earlier date of service

Where the Connecticut rate applies

Connecticut is a Medicare payment area, not a city. Our Census mapping connects it to 215 cities and communities in Connecticut. Some span more than one payment area; confirm with the service ZIP.

  • Ansonia
  • Ball Pond
  • Baltic
  • Bantam
  • Bethel
  • Bethlehem Village
  • Bigelow Corners
  • Blue Hills

Browse all communities in Connecticut

40845 billing questions

How does 40845 differ from 40840–40844?

40845 is for floor-of-mouth reconstruction using a bone graft. The other codes distinguish reconstruction extent and whether a skin graft is used; select the code that matches the documented technique.

Can this code be used for excision of a mouth lesion?

No. Lesion removal alone is not reconstruction with a bone graft. Report the code that describes the documented lesion excision when that is the service performed.

What documentation supports reporting 40845?

The operative report should identify the floor-of-mouth site, reconstructive work, and bone graft. It should also support the clinical indication.

Can modifier 50 be reported?

No. The descriptor and anatomy make modifier 50 inappropriate for this service.

How are other procedures in the same session paid?

The highest-valued procedure is paid in full; other procedures are subject to the standard 50% multiple-procedure reduction.

What postoperative care is included?

The 90-day global period includes the day-before preoperative visit and related postoperative care during the 90 days after surgery.

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 40845PPRRVU2026_Oct_nonQPP.csv, line 4,876 (RVU26D)
Geographic factors for ConnecticutGPCI2026.csv, line 38 (RVU26D)

Open CMS sourceHow we calculate rates

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