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CPT code 11900: Lesion injection, up to seven lesions2026 Medicare rate & RVUs in Connecticut

Reports medication injected directly into one to seven skin lesions, such as keloids or hypertrophic scars, during a single treatment session.

CMS RVU26DEffective Oct 1, 2026One payment locality257.1K Medicare services in 2024

In Connecticut, Medicare pays $60.40 for 11900 in the office and $25.15 when it’s performed in a hospital or facility.

$60.40Office (non-facility)
$25.15Hospital or facility
+6.4%vs the national office rate ($56.78)

Check a contract rate as a % of Medicare · 11900 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 11900 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Connecticut
  2. What 11900 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 11900 covers

A clinician injects medication directly into skin lesions, commonly using an intralesional corticosteroid for keloids, hypertrophic scars, or selected inflammatory lesions. Dermatologists and other clinicians who treat these conditions perform the service in office settings and, less often, in facility settings. The code is selected by the number of lesions treated, not the number of needle passes or the medication volume; it covers treatment of one through seven lesions. More than seven lesions are reported with 11901.

Document the treated lesions and their number, the medication and dose, and the clinical reason for injection. The medication may be reported separately when applicable and supported by documentation. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and others at 50%. Modifier 50 is inappropriate. Assistant-at-surgery payment is restricted, and co-surgeon and team-surgery reporting 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 11900

Across 109 of 109 payment localities, the office rate for 11900 runs from $50.60 in Arkansas to $74.71 in San Benito County, CA. Connecticut pays $60.40. The RVUs are the same everywhere; the geographic indexes change the dollars.

11900 in Connecticut vs other payment areas
  1. Connecticut · this page$60.40
  2. Los Angeles, CA · California$63.89+$3.49
  3. Washington, DC area · District of Columbia$64.67+$4.27
  4. Miami, FL · Florida$60.90+$0.50
  5. Chicago, IL · Illinois$59.25−$1.15
  6. Manhattan, NY · New York$65.02+$4.62
  7. Alaska · Alaska$67.02+$6.62

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

Every other payment area

11900 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$51.30$22.66
ArkansasArkansas$50.60$22.49
ArizonaArizona$55.36$23.64
Bakersfield, CACalifornia$60.11$24.23
Chico, CACalifornia$59.95$24.08
El Centro, CACalifornia$59.96$24.08
Fresno, CACalifornia$59.95$24.08
Hanford, CACalifornia$59.95$24.08

11900 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.

$50.60

$67.33

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

View every state and territory as a table
11900 office rate range by state
State / territoryOffice rate rangeLocalities
AK$67.021
AL$51.301
AR$50.601
AZ$55.361
CA$59.95–$74.7129
CO$59.061
CT$60.401
DC$64.671
DE$56.241
FL$55.95–$60.903
GA$52.99–$57.782
GU$61.291
HI$61.291
IA$52.541
ID$52.861
IL$54.41–$59.254
IN$53.141
KS$52.301
KY$52.411
LA$52.33–$54.762
MA$58.73–$64.682
MD$57.27–$64.673
ME$53.10–$55.822
MI$53.68–$56.592
MN$56.711
MO$51.48–$54.963
MS$51.051
MT$56.781
NC$53.631
ND$55.791
NE$52.811
NH$58.131
NJ$61.13–$64.062
NM$53.961
NV$56.541
NY$54.38–$66.505
OH$53.481
OK$52.331
OR$56.13–$60.852
PA$53.57–$58.972
PR$57.181
RI$58.181
SC$53.641
SD$55.671
TN$52.541
TX$53.24–$58.838
UT$54.331
VA$55.64–$64.672
VI$57.181
VT$55.581
WA$58.62–$65.972
WI$54.031
WV$52.511
WY$56.351

See 11900 in every payment locality

How the 11900 rate is calculated

Each of 11900’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 · 11900

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.51

0.51 RVUs× 1.000 GPCI

Practice expense1.14

1.14 RVUs× 1.000 GPCI

Malpractice0.05

0.05 RVUs× 1.000 GPCI

Adjusted RVUs

1.7000

Conversion factor

$33.4009

Medicare rate

$56.78

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

1,379

Code
11900
Physician work
0.51
Practice expense
1.14
Malpractice
0.05

GPCI2026.csv

38

Locality
Connecticut
Physician work
1.020
Practice expense
1.077
Malpractice
1.210
Office calculation for 11900 in Connecticut
ComponentRVULocality factorAdjusted
Physician work0.51× 1.0200.5202
Practice expense1.14× 1.0771.2278
Malpractice0.05× 1.2100.0605
Total RVUs1.8085
Conversion factor× 33.4009

Office rate, Connecticut$60.40

Office: (0.51 × 1.02 + 1.14 × 1.077 + 0.05 × 1.21) × $33.4009 = $60.40

Facility: (0.51 × 1.02 + 0.16 × 1.077 + 0.05 × 1.21) × $33.4009 = $25.15

Open 11900 in the RVU calculator

Payment rules and modifiers for 11900

The CMS indicators that decide how 11900 is paid alongside other services.

CMS payment indicators · 11900

Lesion injection, up to seven lesions

RuleCMS valueWhat it means
Global period000Same-day global: pre- and post-op care on the day of the procedure is 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.

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

11900 without 51 · national office

$56.78

Lesion injection, up to seven lesions

11900-51 · Second procedure: 50%

$28.39

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 11900

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

Codes related to 11900
CodeHow it relatesOffice range, Connecticut
Same family
11901Lesion injection, more than seven lesionsSibling code for intralesional injection when more than seven lesions are treated.$72.93
Often billed with
J3301Triamcinolone injection, per 10 mgTriamcinolone acetonide may be reported for the drug when separately supplied and documented.No office rate
Used instead
17110Benign lesion destruction, up to 14 lesionsDestruction may be selected for eligible benign lesions treated destructively rather than by intralesional injection.$118.81

How 11900 has changed in Connecticut

11900 · Office / nonfacility

$60.40

Effective 2026-10-01

The base rate is $0.67 higher than on 2025-10-01, moving from $59.73 to $60.40 (1.1%).

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

    $59.73changed to$60.40

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 0.52 changed to 0.51
    • Practice expense RVU 1.15 changed to 1.14
    • 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

    $61.87changed to$59.73

    • Conversion factor 33.2875 changed to 32.3465
    • Malpractice RVU 0.06 changed to 0.05

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $60.86changed to$61.87

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $62.52changed to$60.86

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 1.13 changed to 1.15
    • 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

    $63.07changed to$62.52

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 1.11 changed to 1.13
    • Malpractice RVU 0.05 changed to 0.06
    • 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

    $62.43changed to$63.07

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 1.08 changed to 1.11

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $61.05changed to$62.43

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 0.99 changed to 1.08
    • 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

    $60.37changed to$61.05

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 0.95 changed to 0.99
    • Malpractice RVU 0.07 changed to 0.05
    • 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

    $62.71changed to$60.37

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 1.01 changed to 0.95

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $61.90changed to$62.71

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 0.99 changed to 1.01
    • 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

    $61.49changed to$61.90

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 0.98 changed to 0.99
    • 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

    $61.27changed to$61.49

    • Conversion factor 35.9335 changed to 35.8043
    • Malpractice RVU 0.06 changed to 0.07

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $60.96changed to$61.27

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $60.15changed to$60.96

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 0.95 changed to 0.98
    • Malpractice RVU 0.07 changed to 0.06
    • 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

    $61.84changed to$60.15

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 1.08 changed to 0.95
    • 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: $61.84

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$60.40$25.15RVU26D
2026-07-01$60.40$25.15RVU26C
2026-04-01$60.40$25.15RVU26B
2026-01-01$60.40$25.15RVU26A
2025-10-01$59.73$30.08RVU25D
2025-07-01$59.73$30.08RVU25C
2025-04-01$59.73$30.08RVU25B
2025-01-01$59.73$30.08RVU25A
2024-10-01$61.87$31.36RVU24D
2024-07-01$61.87$31.36RVU24C
2024-04-01$61.87$31.36RVU24B
2024-03-09$61.87$31.36RVU24AR
2024-01-01$60.86$30.85RVU24A
2023-10-01$62.52$31.90RVU23D
2023-07-01$62.52$31.90RVU23C
2023-04-01$62.52$31.90RVU23B
2023-01-01$62.52$31.90RVU23A
2022-10-01$63.07$31.46RVU22D
2022-07-01$63.07$31.46RVU22C
2022-04-01$63.07$31.46RVU22B
2022-01-01$63.07$31.46RVU22A
2021-10-01$62.43$32.11RVU21D
2021-07-01$62.43$32.11RVU21C
2021-04-01$62.43$32.11RVU21B
2021-01-01$62.43$32.11RVU21A
2020-10-01$61.05$33.34RVU20D
2020-07-01$61.05$33.34RVU20C
2020-04-01$61.05$33.34RVU20B
2020-01-01$61.05$33.34RVU20A
2019-10-01$60.37$34.72RVU19D
2019-07-01$60.37$34.72RVU19C
2019-04-01$60.37$34.72RVU19B
2019-01-01$60.37$34.72RVU19A
2018-10-01$62.71$34.69RVU18D
2018-07-01$62.71$34.69RVU18C
2018-04-01$62.71$34.69RVU18B
2018-01-01$62.71$34.69RVU18AR1
2017-10-01$61.90$34.64RVU17D
2017-07-01$61.90$34.64RVU17C
2017-04-01$61.90$34.64RVU17B
2017-01-01$61.90$34.64RVU17A
2016-10-01$61.49$34.60RVU16D
2016-07-01$61.49$34.60RVU16C
2016-04-01$61.49$34.60RVU16B
2016-01-01$61.49$34.60RVU16A
2015-10-01$61.27$34.28RVU15D
2015-07-01$61.27$34.28RVU15C
2015-04-01$60.96$34.11RVU15B
2015-01-01$60.96$34.11RVU15A
2014-10-01$60.15$34.16RVU14D
2014-07-01$60.15$34.16RVU14C
2014-04-01$60.15$34.16RVU14B
2014-01-01$60.15$34.16RVU14A
2013-10-01$61.84$33.90RVU13D
2013-07-01$61.84$33.90RVU13C
2013-04-01$61.84$33.90RVU13B
2013-01-01$61.84$33.90RVU13AR

Price 11900 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

11900 billing questions

How many lesions qualify for 11900?

Report 11900 for treatment of one through seven lesions in the session. Use 11901 when more than seven lesions are treated.

Do separate injections into one lesion count as multiple lesions?

No. Select the code by the number of distinct lesions treated, not the number of needle passes or injection sites within a lesion.

Can the injected medication be billed separately?

The medication may be reported separately when applicable. Document the drug and dose, and follow the applicable drug-code requirements.

Is modifier 50 appropriate when lesions are on both sides of the body?

No. CMS identifies bilateral adjustment as inappropriate for 11900; report the service based on the number of lesions treated.

How does the 0-day global period affect same-day care?

Same-day preoperative and postoperative care is included in the procedure. CMS applies the standard multiple-procedure reduction when other procedures are performed in the same session.

Can an assistant or co-surgeon be reported?

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

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 11900PPRRVU2026_Oct_nonQPP.csv, line 1,379 (RVU26D)
Geographic factors for ConnecticutGPCI2026.csv, line 38 (RVU26D)

Open CMS sourceHow we calculate rates

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