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CPT code 17312: Mohs surgery, additional stage, specified sites2026 Medicare rate & RVUs in Utah

Reports an additional Mohs surgery stage for a lesion on the head, neck, hands, feet, or genitalia when microscopic examination shows tumor remains.

CMS RVU26DEffective Oct 1, 2026One payment locality505.2K Medicare services in 2024

In Utah, Medicare pays $384.64 for 17312 in the office and $149.79 when it’s performed in a hospital or facility.

$384.64Office (non-facility)
$149.79Hospital or facility
−4.5%vs the national office rate ($402.81)

Check a contract rate as a % of Medicare · 17312 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 17312 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Utah
  2. What 17312 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 17312 covers

A Mohs surgeon, commonly a dermatologist, removes and maps another thin layer of tissue after the initial stage. The tissue is processed and examined microscopically so the surgeon can identify whether tumor remains at the margins and whether another stage is needed. Code 17312 is for an additional stage at the head, neck, hands, feet, or genitalia; the first stage is reported separately with the appropriate primary Mohs code. Mohs is commonly performed in an office surgical setting.

Report 17312 for each additional stage after the first, rather than for each tissue block within a stage. The operative record should identify the lesion and site, the stage sequence, tissue mapping and microscopic findings, and the reason another layer was taken. A stage may include up to five tissue blocks; additional blocks are addressed with 17315. As an add-on code, 17312 is billed only with a primary procedure and is paid within that procedure's global period.

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 Utah compares for 17312

Across 109 of 109 payment localities, the office rate for 17312 runs from $357.39 in Arkansas to $535.17 in San Benito County, CA. Utah pays $384.64. The RVUs are the same everywhere; the geographic indexes change the dollars.

17312 in Utah vs other payment areas
  1. Utah · this page$384.64
  2. Los Angeles, CA · California$455.54+$70.90
  3. Washington, DC area · District of Columbia$460.46+$75.82
  4. Miami, FL · Florida$431.32+$46.68
  5. Chicago, IL · Illinois$419.26+$34.62
  6. Manhattan, NY · New York$462.20+$77.56
  7. Alaska · Alaska$470.12+$85.48

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

Every other payment area

17312 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$362.50$143.89
ArkansasArkansas$357.39$142.78
ArizonaArizona$392.42$150.32
Bakersfield, CACalifornia$427.84$154.01
Chico, CACalifornia$426.82$152.99
El Centro, CACalifornia$426.87$153.05
Fresno, CACalifornia$426.82$152.99
Hanford, CACalifornia$426.82$152.99

17312 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.

$357.39

$481.00

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

View every state and territory as a table
17312 office rate range by state
State / territoryOffice rate rangeLocalities
AK$470.121
AL$362.501
AR$357.391
AZ$392.421
CA$426.82–$535.1729
CO$419.881
CT$429.171
DC$460.461
DE$398.831
FL$395.85–$431.323
GA$374.23–$409.902
GU$437.121
HI$437.121
IA$372.011
ID$374.271
IL$384.29–$419.754
IN$376.401
KS$370.061
KY$370.331
LA$369.66–$387.542
MA$417.36–$461.152
MD$406.40–$460.463
ME$375.91–$396.192
MI$379.51–$400.432
MN$403.301
MO$363.30–$389.193
MS$360.431
MT$402.791
NC$379.791
ND$396.271
NE$374.071
NH$413.091
NJ$434.34–$455.822
NM$381.441
NV$401.261
NY$385.33–$472.875
OH$378.171
OK$369.941
OR$398.40–$433.262
PA$378.90–$418.532
PR$405.781
RI$413.051
SC$379.561
SD$395.501
TN$371.851
TX$376.45–$418.268
UT$384.641
VA$394.74–$460.462
VI$405.781
VT$394.531
WA$416.64–$470.702
WI$383.251
WV$370.331
WY$399.951

See 17312 in every payment locality

How the 17312 rate is calculated

Each of 17312’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 · 17312

RVUs × geographic indexes × conversion factor

Office or facility?

Work3.22

3.22 RVUs× 1.000 GPCI

Practice expense8.51

8.51 RVUs× 1.000 GPCI

Malpractice0.33

0.33 RVUs× 1.000 GPCI

Adjusted RVUs

12.0600

Conversion factor

$33.4009

Medicare rate

$402.81

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

The exact Utah inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

1,647

Code
17312
Physician work
3.22
Practice expense
8.51
Malpractice
0.33

GPCI2026.csv

104

Locality
Utah
Physician work
1.000
Practice expense
0.940
Malpractice
0.898
Office calculation for 17312 in Utah
ComponentRVULocality factorAdjusted
Physician work3.22× 1.0003.2200
Practice expense8.51× 0.9407.9994
Malpractice0.33× 0.8980.2963
Total RVUs11.5157
Conversion factor× 33.4009

Office rate, Utah$384.64

Office: (3.22 × 1 + 8.51 × 0.94 + 0.33 × 0.898) × $33.4009 = $384.64

Facility: (3.22 × 1 + 1.03 × 0.94 + 0.33 × 0.898) × $33.4009 = $149.79

Open 17312 in the RVU calculator

Payment rules and modifiers for 17312

The CMS indicators that decide how 17312 is paid alongside other services.

CMS payment indicators · 17312

Mohs surgery, additional stage, specified sites

RuleCMS valueWhat it means
Global periodZZZAdd-on code: falls within the primary procedure’s global period.
Multiple procedures0No multiple-procedure reduction.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)1Not paid (statutory restriction).
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.

Codes related to 17312

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

Codes related to 17312
CodeHow it relatesOffice range, Utah
Add-on codes
17311Mohs surgery, first stage, head/neck/hands/feet/genitaliaThe first Mohs stage at the specified sites is paired with additional-stage code 17312 when needed.$638.29
17315Mohs block, beyond first five blocksAdditional tissue blocks beyond five in a stage may be reported with the applicable Mohs stage code.$76.02
Used instead
17314Mohs stage, additional stage, trunk or limbReports an additional Mohs stage on the trunk, arms, or legs instead of the sites covered by 17312.$367.88

How 17312 has changed in Utah

17312 · Office / nonfacility

$384.64

Effective 2026-10-01

The base rate is $4.81 higher than on 2025-10-01, moving from $379.83 to $384.64 (1.3%).

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

    $379.83changed to$384.64

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 3.30 changed to 3.22
    • Practice expense RVU 8.70 changed to 8.51
    • Malpractice RVU 0.35 changed to 0.33
    • Practice expense GPCI 0.933 changed to 0.940
    • Malpractice GPCI 0.930 changed to 0.898

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $392.75changed to$379.83

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 8.76 changed to 8.70

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $386.34changed to$392.75

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $394.78changed to$386.34

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 8.69 changed to 8.76
    • Practice expense GPCI 0.926 changed to 0.933
    • Malpractice GPCI 0.865 changed to 0.930

  5. January 1, 2023

    RVU23A

    $393.06changed to$394.78

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 8.49 changed to 8.69
    • Malpractice RVU 0.32 changed to 0.35
    • Practice expense GPCI 0.919 changed to 0.926
    • Malpractice GPCI 0.799 changed to 0.865

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $393.47changed to$393.06

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 8.41 changed to 8.49
    • Malpractice RVU 0.31 changed to 0.32

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $386.24changed to$393.47

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 7.69 changed to 8.41
    • Practice expense GPCI 0.923 changed to 0.919
    • Malpractice GPCI 0.982 changed to 0.799

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $389.06changed to$386.24

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 7.47 changed to 7.69
    • Malpractice RVU 0.49 changed to 0.31
    • Practice expense GPCI 0.927 changed to 0.923
    • Malpractice GPCI 1.165 changed to 0.982

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $382.38changed to$389.06

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 7.27 changed to 7.47
    • Malpractice RVU 0.50 changed to 0.49

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $379.72changed to$382.38

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 7.24 changed to 7.27
    • Practice expense GPCI 0.925 changed to 0.927
    • Malpractice GPCI 1.167 changed to 1.165

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $376.77changed to$379.72

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 7.20 changed to 7.24
    • Practice expense GPCI 0.922 changed to 0.925
    • Malpractice GPCI 1.169 changed to 1.167

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $376.02changed to$376.77

    • Conversion factor 35.9335 changed to 35.8043
    • Malpractice RVU 0.45 changed to 0.50

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $374.15changed to$376.02

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $366.49changed to$374.15

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 7.01 changed to 7.20
    • Malpractice RVU 0.43 changed to 0.45
    • Practice expense GPCI 0.919 changed to 0.922
    • Malpractice GPCI 1.136 changed to 1.169

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $376.60changed to$366.49

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 7.94 changed to 7.01
    • Malpractice RVU 0.45 changed to 0.43
    • Practice expense GPCI 0.916 changed to 0.919
    • Malpractice GPCI 1.102 changed to 1.136

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $376.60

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$384.64$149.79RVU26D
2026-07-01$384.64$149.79RVU26C
2026-04-01$384.64$149.79RVU26B
2026-01-01$384.64$149.79RVU26A
2025-10-01$379.83$177.63RVU25D
2025-07-01$379.83$177.63RVU25C
2025-04-01$379.83$177.63RVU25B
2025-01-01$379.83$177.63RVU25A
2024-10-01$392.75$181.25RVU24D
2024-07-01$392.75$181.25RVU24C
2024-04-01$392.75$181.25RVU24B
2024-03-09$392.75$181.25RVU24AR
2024-01-01$386.34$178.29RVU24A
2023-10-01$394.78$183.28RVU23D
2023-07-01$394.78$183.28RVU23C
2023-04-01$394.78$183.28RVU23B
2023-01-01$394.78$183.28RVU23A
2022-10-01$393.06$182.84RVU22D
2022-07-01$393.06$182.84RVU22C
2022-04-01$393.06$182.84RVU22B
2022-01-01$393.06$182.84RVU22A
2021-10-01$393.47$184.40RVU21D
2021-07-01$393.47$184.40RVU21C
2021-04-01$393.47$184.40RVU21B
2021-01-01$393.47$184.40RVU21A
2020-10-01$386.24$194.70RVU20D
2020-07-01$386.24$194.70RVU20C
2020-04-01$386.24$194.70RVU20B
2020-01-01$386.24$194.70RVU20A
2019-10-01$389.06$205.32RVU19D
2019-07-01$389.06$205.32RVU19C
2019-04-01$389.06$205.32RVU19B
2019-01-01$389.06$205.32RVU19A
2018-10-01$382.38$206.85RVU18D
2018-07-01$382.38$206.85RVU18C
2018-04-01$382.38$206.85RVU18B
2018-01-01$382.38$206.85RVU18AR1
2017-10-01$379.72$206.43RVU17D
2017-07-01$379.72$206.43RVU17C
2017-04-01$379.72$206.43RVU17B
2017-01-01$379.72$206.43RVU17A
2016-10-01$376.77$205.10RVU16D
2016-07-01$376.77$205.10RVU16C
2016-04-01$376.77$205.10RVU16B
2016-01-01$376.77$205.10RVU16A
2015-10-01$376.02$204.08RVU15D
2015-07-01$376.02$204.08RVU15C
2015-04-01$374.15$203.06RVU15B
2015-01-01$374.15$203.06RVU15A
2014-10-01$366.49$200.24RVU14D
2014-07-01$366.49$200.24RVU14C
2014-04-01$366.49$200.24RVU14B
2014-01-01$366.49$200.24RVU14A
2013-10-01$376.60$196.78RVU13D
2013-07-01$376.60$196.78RVU13C
2013-04-01$376.60$196.78RVU13B
2013-01-01$376.60$196.78RVU13AR

Price 17312 for an earlier date of service

Where the Utah rate applies

Utah is a Medicare payment area, not a city. Our Census mapping connects it to 334 cities and communities in Utah. Some span more than one payment area; confirm with the service ZIP.

  • Alpine
  • Alta
  • Altamont
  • Alton
  • Amalga
  • American Fork
  • Aneth
  • Annabella

Browse all communities in Utah

17312 billing questions

When should 17312 be used instead of 17311?

Use 17311 for the first Mohs stage on the head, neck, hands, feet, or genitalia. Report 17312 for each additional stage at one of those sites.

Is 17312 billed per tissue block?

No. It represents an additional stage, which can include up to five tissue blocks. Code 17315 addresses additional blocks beyond that amount.

Can 17312 be reported by itself?

No. It is an add-on code and must be billed with the primary Mohs procedure for the lesion.

Which additional-stage code applies to a lesion on the trunk or an extremity?

Use 17314 for an additional stage on the trunk, arms, or legs. Code 17312 is for additional stages on the head, neck, hands, feet, or genitalia.

What documentation supports an additional-stage unit?

The operative record should show the lesion site, the additional stage performed, the tissue map and microscopic findings, and the reason the surgeon continued.

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 17312PPRRVU2026_Oct_nonQPP.csv, line 1,647 (RVU26D)
Geographic factors for UtahGPCI2026.csv, line 104 (RVU26D)

Open CMS sourceHow we calculate rates

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