CPT code 11600: Malignant lesion excision, trunk or extremity, 0.5 cm or less2026 Medicare rate & RVUs in Colorado

Reports excision of a malignant skin lesion on the trunk, arm, or leg when the lesion and required margins have an excised diameter of 0.5 cm or less.

CMS RVU26DEffective Oct 1, 2026One payment locality2.6K Medicare services in 2024

In Colorado, Medicare pays $206.35 for 11600 in the office and $110.75 when it’s performed in a hospital or facility.

$206.35Office (non-facility)
$110.75Hospital or facility
+4.0%vs the national office rate ($198.40)

Check a contract rate as a % of Medicare · 11600 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 11600 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Colorado
  2. What 11600 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 11600 covers

This code describes removal of a malignant skin lesion from the trunk, an arm, or a leg, with margins included in the measured excision. Dermatologists, surgeons, and other qualified clinicians may perform it in an office procedure room or a facility. The size category is based on the lesion’s greatest clinical diameter plus the margins taken, not just the visible lesion. Typical cases include excision of a small malignant lesion on the back, torso, or extremity.

Report the code when the excised diameter is 0.5 cm or less and the site falls within this anatomic group. Documentation should identify the site, lesion dimensions, margins or excised diameter, and clinical or pathology support for malignancy. Simple closure is included; a separately documented intermediate or complex repair may be reported under its repair code. The procedure has a 10-day global period, including related postoperative visits during that period. When multiple procedures occur in one session, the highest-valued is paid in full and other procedures are subject to the standard 50% reduction. Modifier 50 is inappropriate; assistant-at-surgery payment is restricted, and co-surgeon and team-surgery billing 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 Colorado compares for 11600

Across 109 of 109 payment localities, the office rate for 11600 runs from $175.50 in Arkansas to $262.11 in San Benito County, CA. Colorado pays $206.35. The RVUs are the same everywhere; the geographic indexes change the dollars.

11600 in Colorado vs other payment areas
  1. Colorado · this page$206.35
  2. Los Angeles, CA · California$223.53+$17.18
  3. Washington, DC area · District of Columbia$226.68+$20.33
  4. Miami, FL · Florida$214.80+$8.45
  5. Chicago, IL · Illinois$208.55+$2.20
  6. Manhattan, NY · New York$228.31+$21.96
  7. Alaska · Alaska$230.79+$24.44

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

Every other payment area

11600 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$178.07$99.45
ArkansasArkansas$175.50$98.32
ArizonaArizona$193.10$106.04
Bakersfield, CACalifornia$209.94$111.47
Chico, CACalifornia$209.32$110.85
El Centro, CACalifornia$209.36$110.89
Fresno, CACalifornia$209.32$110.85
Hanford, CACalifornia$209.32$110.85

11600 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.

$175.50

$235.72

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

View every state and territory as a table
11600 office rate range by state
State / territoryOffice rate rangeLocalities
AK$230.791
AL$178.071
AR$175.501
AZ$193.101
CA$209.32–$262.1129
CO$206.351
CT$211.581
DC$226.681
DE$196.301
FL$195.85–$214.803
GA$184.81–$202.182
GU$214.391
HI$214.391
IA$182.421
ID$183.641
IL$190.32–$208.554
IN$184.701
KS$181.651
KY$182.461
LA$182.20–$191.202
MA$205.16–$226.632
MD$200.02–$226.683
ME$184.69–$194.572
MI$187.28–$198.372
MN$197.471
MO$179.14–$191.783
MS$177.351
MT$198.391
NC$186.601
ND$194.231
NE$183.391
NH$203.191
NJ$213.93–$224.352
NM$188.331
NV$197.371
NY$189.40–$233.955
OH$186.431
OK$182.041
OR$195.77–$212.802
PA$186.68–$206.382
PR$199.821
RI$203.221
SC$186.841
SD$193.741
TN$182.571
TX$185.46–$205.738
UT$189.391
VA$193.99–$226.682
VI$199.821
VT$193.551
WA$204.74–$231.162
WI$187.741
WV$183.311
WY$196.581

See 11600 in every payment locality

How the 11600 rate is calculated

Each of 11600’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 · 11600

RVUs × geographic indexes × conversion factor

Office or facility?

Work1.59

1.59 RVUs× 1.000 GPCI

Practice expense4.14

4.14 RVUs× 1.000 GPCI

Malpractice0.21

0.21 RVUs× 1.000 GPCI

Adjusted RVUs

5.9400

Conversion factor

$33.4009

Medicare rate

$198.40

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

The exact Colorado inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

1,340

Code
11600
Physician work
1.59
Practice expense
4.14
Malpractice
0.21

GPCI2026.csv

37

Locality
Colorado
Physician work
1.012
Practice expense
1.064
Malpractice
0.781
Office calculation for 11600 in Colorado
ComponentRVULocality factorAdjusted
Physician work1.59× 1.0121.6091
Practice expense4.14× 1.0644.4050
Malpractice0.21× 0.7810.1640
Total RVUs6.1780
Conversion factor× 33.4009

Office rate, Colorado$206.35

Office: (1.59 × 1.012 + 4.14 × 1.064 + 0.21 × 0.781) × $33.4009 = $206.35

Facility: (1.59 × 1.012 + 1.45 × 1.064 + 0.21 × 0.781) × $33.4009 = $110.75

Open 11600 in the RVU calculator

Payment rules and modifiers for 11600

11600 has a 10-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 11600

Malignant lesion excision, trunk or extremity, 0.5 cm or less

RuleCMS valueWhat it means
Global period010Minor procedure: the day of the procedure plus 10 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)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.10/0.80/0.10Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 11600

Malignant lesion excision, trunk or extremity, 0.5 cm or less

10-day global period ends

Oct 11, 2026

Covers Oct 1, 2026 through Oct 11, 2026 (11 days).

Visit on Oct 31, 2026

After the global period ends: visits and procedures are billed normally.

SurgeryVisit
Sep 28, 2026Oct 14, 2026

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

11600 without 51 · national office

$198.40

Malignant lesion excision, trunk or extremity, 0.5 cm or less

11600-51 · Second procedure: 50%

$99.20

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 11600 has changed in Colorado

11600 · Office / nonfacility

$206.35

Effective 2026-10-01

The base rate is $8.96 higher than on 2025-10-01, moving from $197.39 to $206.35 (4.5%).

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

    $197.39changed to$206.35

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 1.63 changed to 1.59
    • Practice expense RVU 4.07 changed to 4.14
    • Work GPCI 1.008 changed to 1.012
    • Practice expense GPCI 1.053 changed to 1.064
    • Malpractice GPCI 0.827 changed to 0.781

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $204.46changed to$197.39

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 4.10 changed to 4.07
    • Malpractice RVU 0.22 changed to 0.21

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $201.12changed to$204.46

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $206.98changed to$201.12

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 4.09 changed to 4.10
    • Work GPCI 1.005 changed to 1.008
    • Practice expense GPCI 1.050 changed to 1.053
    • Malpractice GPCI 0.797 changed to 0.827
  5. January 1, 2023

    RVU23A

    $209.51changed to$206.98

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 4.07 changed to 4.09
    • Malpractice RVU 0.21 changed to 0.22
    • Work GPCI 1.001 changed to 1.005
    • Practice expense GPCI 1.047 changed to 1.050
    • Malpractice GPCI 0.767 changed to 0.797

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $211.61changed to$209.51

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 4.08 changed to 4.07

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $206.23changed to$211.61

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 3.77 changed to 4.08
    • Work GPCI 1.000 changed to 1.001
    • Practice expense GPCI 1.033 changed to 1.047
    • Malpractice GPCI 0.905 changed to 0.767

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $202.03changed to$206.23

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 3.66 changed to 3.77
    • Malpractice RVU 0.24 changed to 0.21
    • Practice expense GPCI 1.018 changed to 1.033
    • Malpractice GPCI 1.042 changed to 0.905

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $201.45changed to$202.03

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 3.65 changed to 3.66

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $198.44changed to$201.45

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 3.60 changed to 3.65
    • Malpractice RVU 0.23 changed to 0.24
    • Practice expense GPCI 1.015 changed to 1.018
    • Malpractice GPCI 1.066 changed to 1.042

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $196.93changed to$198.44

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 3.58 changed to 3.60
    • Practice expense GPCI 1.011 changed to 1.015
    • Malpractice GPCI 1.090 changed to 1.066

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $197.27changed to$196.93

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 3.57 changed to 3.58

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $196.29changed to$197.27

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $193.56changed to$196.29

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 3.50 changed to 3.57
    • Malpractice RVU 0.25 changed to 0.23
    • Practice expense GPCI 1.008 changed to 1.011
    • Malpractice GPCI 0.981 changed to 1.090

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $196.73changed to$193.56

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 3.91 changed to 3.50
    • Malpractice RVU 0.26 changed to 0.25
    • Practice expense GPCI 1.004 changed to 1.008
    • Malpractice GPCI 0.872 changed to 0.981

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $196.73

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$206.35$110.75RVU26D
2026-07-01$206.35$110.75RVU26C
2026-04-01$206.35$110.75RVU26B
2026-01-01$206.35$110.75RVU26A
2025-10-01$197.39$121.78RVU25D
2025-07-01$197.39$121.78RVU25C
2025-04-01$197.39$121.78RVU25B
2025-01-01$197.39$121.78RVU25A
2024-10-01$204.46$124.89RVU24D
2024-07-01$204.46$124.89RVU24C
2024-04-01$204.46$124.89RVU24B
2024-03-09$204.46$124.89RVU24AR
2024-01-01$201.12$122.86RVU24A
2023-10-01$206.98$125.15RVU23D
2023-07-01$206.98$125.15RVU23C
2023-04-01$206.98$125.15RVU23B
2023-01-01$206.98$125.15RVU23A
2022-10-01$209.51$125.08RVU22D
2022-07-01$209.51$125.08RVU22C
2022-04-01$209.51$125.08RVU22B
2022-01-01$209.51$125.08RVU22A
2021-10-01$211.61$125.39RVU21D
2021-07-01$211.61$125.39RVU21C
2021-04-01$211.61$125.39RVU21B
2021-01-01$211.61$125.39RVU21A
2020-10-01$206.23$126.08RVU20D
2020-07-01$206.23$126.08RVU20C
2020-04-01$206.23$126.08RVU20B
2020-01-01$206.23$126.08RVU20A
2019-10-01$202.03$125.72RVU19D
2019-07-01$202.03$125.72RVU19C
2019-04-01$202.03$125.72RVU19B
2019-01-01$202.03$125.72RVU19A
2018-10-01$201.45$125.22RVU18D
2018-07-01$201.45$125.22RVU18C
2018-04-01$201.45$125.22RVU18B
2018-01-01$201.45$125.22RVU18AR1
2017-10-01$198.44$124.49RVU17D
2017-07-01$198.44$124.49RVU17C
2017-04-01$198.44$124.49RVU17B
2017-01-01$198.44$124.49RVU17A
2016-10-01$196.93$123.44RVU16D
2016-07-01$196.93$123.44RVU16C
2016-04-01$196.93$123.44RVU16B
2016-01-01$196.93$123.44RVU16A
2015-10-01$197.27$124.25RVU15D
2015-07-01$197.27$124.25RVU15C
2015-04-01$196.29$123.63RVU15B
2015-01-01$196.29$123.63RVU15A
2014-10-01$193.56$122.06RVU14D
2014-07-01$193.56$122.06RVU14C
2014-04-01$193.56$122.06RVU14B
2014-01-01$193.56$122.06RVU14A
2013-10-01$196.73$120.56RVU13D
2013-07-01$196.73$120.56RVU13C
2013-04-01$196.73$120.56RVU13B
2013-01-01$196.73$120.56RVU13AR

Price 11600 for an earlier date of service

Where the Colorado rate applies

Colorado is a Medicare payment area, not a city. Our Census mapping connects it to 485 cities and communities in Colorado. Some span more than one payment area; confirm with the service ZIP.

  • Acres Green
  • Aetna Estates
  • Aguilar
  • Air Force Academy
  • Akron
  • Alamosa
  • Alamosa East
  • Allenspark

Browse all communities in Colorado

11600 billing questions

How do I distinguish this code from 11601?

Use 11600 when the lesion plus required margins measures 0.5 cm or less. Code 11601 begins at an excised diameter of 0.6 cm.

Does the measurement include the margins?

Yes. Select the size category using the lesion’s greatest clinical diameter plus the margins removed, rather than the lesion alone.

Can I bill separately for closing the excision?

Simple closure is included in the excision. A separately documented intermediate or complex repair may be reported when the repair service meets its code requirements.

Can modifier 50 be used for lesions on both sides?

No. Modifier 50 is inappropriate for this code. The CMS bilateral adjustment does not apply.

Are assistant or co-surgeon services payable?

Assistant-at-surgery payment is restricted for this code. Co-surgeons and team surgery are not permitted.

Are related postoperative visits included?

Yes. The 10-day global period includes related postoperative visits during those 10 days.

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 11600PPRRVU2026_Oct_nonQPP.csv, line 1,340 (RVU26D)
Geographic factors for ColoradoGPCI2026.csv, line 37 (RVU26D)

Open CMS sourceHow we calculate rates

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