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CPT code 37237: Arterial stent, each additional artery2026 Medicare rate & RVUs in Puerto Rico

Reports stent placement in each additional qualifying artery during the same session as initial arterial stenting, when treatment extends beyond the first artery.

CMS RVU26DEffective Oct 1, 2026One payment locality1.4K Medicare services in 2024

In Puerto Rico, Medicare pays $1,227.11 for 37237 in the office and $187.39 when it’s performed in a hospital or facility.

$1,227.11Office (non-facility)
$187.39Hospital or facility
+0.9%vs the national office rate ($1,216.13)

Check a contract rate as a % of Medicare · 37237 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 37237 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Puerto Rico
  2. What 37237 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 37237 covers

This add-on captures stent placement in an additional qualifying artery during an open or catheter-based intervention. It applies to arterial sites in the 37236 code family, such as renal or mesenteric arteries; cervical carotid, coronary, pulmonary, lower-extremity, intracranial, and dialysis-circuit stenting follow other code pathways. Interventional radiologists, vascular surgeons, and other physicians performing vascular procedures may place the stent in a hospital or office-based setting.

Report 37237 for each additional artery after reporting 37236 for the initial artery. Count distinct treated arteries, not additional stents or lesions within one artery. The operative report should identify the treated artery and document the approach and stent placement. CMS classifies 37237 as an add-on code: bill it only with a primary procedure, and its payment falls 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 Puerto Rico compares for 37237

Across 109 of 109 payment localities, the office rate for 37237 runs from $1,052.66 in Arkansas to $1,677.48 in San Benito County, CA. Puerto Rico pays $1,227.11. The RVUs are the same everywhere; the geographic indexes change the dollars.

37237 in Puerto Rico vs other payment areas
  1. Puerto Rico · this page$1,227.11
  2. Los Angeles, CA · California$1,401.71+$174.60
  3. Washington, DC area · District of Columbia$1,413.28+$186.17
  4. Miami, FL · Florida$1,310.02+$82.91
  5. Chicago, IL · Illinois$1,265.57+$38.46
  6. Manhattan, NY · New York$1,413.75+$186.64
  7. Alaska · Alaska$1,338.16+$111.05

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

Every other payment area

37237 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$1,071.08$171.21
ArkansasArkansas$1,052.66$169.25
ArizonaArizona$1,178.94$182.41
Bakersfield, CACalifornia$1,305.96$178.82
Chico, CACalifornia$1,303.25$176.10
El Centro, CACalifornia$1,303.41$176.27
Fresno, CACalifornia$1,303.25$176.10
Hanford, CACalifornia$1,303.25$176.10

37237 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.

$1,052.66

$1,490.37

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

View every state and territory as a table
37237 office rate range by state
State / territoryOffice rate rangeLocalities
AK$1,338.161
AL$1,071.081
AR$1,052.661
AZ$1,178.941
CA$1,303.25–$1,677.4829
CO$1,277.321
CT$1,306.331
DC$1,413.281
DE$1,200.911
FL$1,186.97–$1,310.023
GA$1,109.74–$1,239.972
GU$1,345.151
HI$1,345.151
IA$1,107.211
ID$1,114.971
IL$1,144.06–$1,271.084
IN$1,122.711
KS$1,099.291
KY$1,097.351
LA$1,094.61–$1,159.052
MA$1,266.91–$1,420.742
MD$1,227.30–$1,413.283
ME$1,119.95–$1,194.402
MI$1,129.57–$1,202.482
MN$1,222.901
MO$1,071.12–$1,166.063
MS$1,062.231
MT$1,216.061
NC$1,134.091
ND$1,196.291
NE$1,114.931
NH$1,254.771
NJ$1,320.99–$1,394.222
NM$1,136.151
NV$1,211.591
NY$1,153.98–$1,451.005
OH$1,125.531
OK$1,096.921
OR$1,202.03–$1,325.722
PA$1,128.65–$1,267.882
PR$1,227.111
RI$1,249.611
SC$1,131.741
SD$1,193.951
TN$1,105.621
TX$1,119.76–$1,273.178
UT$1,150.051
VA$1,188.55–$1,413.282
VI$1,227.111
VT$1,189.181
WA$1,265.30–$1,454.022
WI$1,149.151
WV$1,093.701
WY$1,207.441

See 37237 in every payment locality

How the 37237 rate is calculated

Each of 37237’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 · 37237

RVUs × geographic indexes × conversion factor

Office or facility?

Work4.14

4.14 RVUs× 1.000 GPCI

Practice expense31.27

31.27 RVUs× 1.000 GPCI

Malpractice1.00

1.00 RVUs× 1.000 GPCI

Adjusted RVUs

36.4100

Conversion factor

$33.4009

Medicare rate

$1,216.13

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

The exact Puerto Rico inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

4,600

Code
37237
Physician work
4.14
Practice expense
31.27
Malpractice
1.00

GPCI2026.csv

91

Locality
Puerto Rico
Physician work
1.000
Practice expense
1.011
Malpractice
0.985
Office calculation for 37237 in Puerto Rico
ComponentRVULocality factorAdjusted
Physician work4.14× 1.0004.1400
Practice expense31.27× 1.01131.6140
Malpractice1.00× 0.9850.9850
Total RVUs36.7390
Conversion factor× 33.4009

Office rate, Puerto Rico$1227.11

Office: (4.14 × 1 + 31.27 × 1.011 + 1 × 0.985) × $33.4009 = $1227.11

Facility: (4.14 × 1 + 0.48 × 1.011 + 1 × 0.985) × $33.4009 = $187.39

Open 37237 in the RVU calculator

Payment rules and modifiers for 37237

The CMS indicators that decide how 37237 is paid alongside other services.

CMS payment indicators · 37237

Arterial stent, each additional artery

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)0Not paid without supporting documentation.
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.

Codes related to 37237

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

Codes related to 37237
CodeHow it relatesOffice range, Puerto Rico
Add-on codes
37236Arterial stent, first treated arteryPrimary code for stenting the initial qualifying artery in the session.$2,623.01
Used instead
37239Venous stenting, each additional veinAdd-on counterpart for each additional treated vein.$1,676.37
37238Venous stenting, initial veinInitial-vessel stent code for a qualifying vein rather than an artery.$3,307.40
37215Carotid stenting, with distal embolic protectionSpecific pathway for cervical carotid stenting with embolic protection.No office rate

How 37237 has changed in Puerto Rico

37237 · Office / nonfacility

$1227.11

Effective 2026-10-01

The base rate is $37.00 higher than on 2025-10-01, moving from $1190.11 to $1227.11 (3.1%).

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

    $1190.11changed to$1227.11

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 4.25 changed to 4.14
    • Practice expense RVU 31.39 changed to 31.27
    • Malpractice RVU 0.95 changed to 1.00
    • Practice expense GPCI 1.007 changed to 1.011
    • Malpractice GPCI 0.982 changed to 0.985

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $1269.98changed to$1190.11

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 32.73 changed to 31.39
    • Malpractice RVU 0.96 changed to 0.95

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $1249.25changed to$1269.98

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $1327.89changed to$1249.25

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 33.77 changed to 32.73
    • Malpractice RVU 0.91 changed to 0.96
    • Practice expense GPCI 1.008 changed to 1.007
    • Malpractice GPCI 0.984 changed to 0.982

  5. October 1, 2023

    RVU23D

    $1319.23changed to$1327.89

    • Practice expense GPCI 1.000 changed to 1.008
    • Malpractice GPCI 1.000 changed to 0.984

  6. January 1, 2023

    RVU23A

    $1399.70changed to$1319.23

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 34.98 changed to 33.77
    • Malpractice RVU 0.95 changed to 0.91
    • Practice expense GPCI 1.008 changed to 1.000
    • Malpractice GPCI 0.986 changed to 1.000

    Held through RVU23B, RVU23C.

  7. January 1, 2022

    RVU22A

    $1702.92changed to$1399.70

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 43.32 changed to 34.98
    • Malpractice RVU 0.90 changed to 0.95

    Held through RVU22B, RVU22C, RVU22D.

  8. January 1, 2021

    RVU21A

    $1933.45changed to$1702.92

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 48.05 changed to 43.32
    • Malpractice GPCI 0.988 changed to 0.986

    Held through RVU21B, RVU21C, RVU21D.

  9. January 1, 2020

    RVU20A

    $2188.20changed to$1933.45

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 55.20 changed to 48.05
    • Malpractice RVU 0.89 changed to 0.90
    • Practice expense GPCI 1.007 changed to 1.008
    • Malpractice GPCI 0.990 changed to 0.988

    Held through RVU20B, RVU20C, RVU20D.

  10. January 1, 2019

    RVU19A

    $2484.52changed to$2188.20

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 63.45 changed to 55.20
    • Malpractice RVU 0.88 changed to 0.89

    Held through RVU19B, RVU19C, RVU19D.

  11. January 1, 2018

    RVU18AR1

    $2116.35changed to$2484.52

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 63.28 changed to 63.45
    • Malpractice RVU 0.86 changed to 0.88
    • Practice expense GPCI 0.856 changed to 1.007
    • Malpractice GPCI 0.642 changed to 0.990

    Held through RVU18B, RVU18C, RVU18D.

  12. January 1, 2017

    RVU17A

    $1803.58changed to$2116.35

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 65.07 changed to 63.28
    • Malpractice RVU 0.85 changed to 0.86
    • Practice expense GPCI 0.705 changed to 0.856
    • Malpractice GPCI 0.293 changed to 0.642

    Held through RVU17B, RVU17C, RVU17D.

  13. January 1, 2016

    RVU16A

    $1824.26changed to$1803.58

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 65.60 changed to 65.07
    • Malpractice RVU 0.92 changed to 0.85

    Held through RVU16B, RVU16C, RVU16D.

  14. July 1, 2015

    RVU15C

    $1815.18changed to$1824.26

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  15. January 1, 2015

    RVU15A

    $895.27changed to$1815.18

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 29.66 changed to 65.60
    • Malpractice RVU 0.80 changed to 0.92
    • Practice expense GPCI 0.692 changed to 0.705
    • Malpractice GPCI 0.271 changed to 0.293

    Held through RVU15B.

  16. January 1, 2014

    RVU14A

    No ratechanged to$895.27

    Held through RVU14B, RVU14C, RVU14D.

  17. January 1, 2013

    RVU13AR

    Earliest loaded release: No rate

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$1,227.11$187.39RVU26D
2026-07-01$1,227.11$187.39RVU26C
2026-04-01$1,227.11$187.39RVU26B
2026-01-01$1,227.11$187.39RVU26A
2025-10-01$1,190.11$199.24RVU25D
2025-07-01$1,190.11$199.24RVU25C
2025-04-01$1,190.11$199.24RVU25B
2025-01-01$1,190.11$199.24RVU25A
2024-10-01$1,269.98$204.36RVU24D
2024-07-01$1,269.98$204.36RVU24C
2024-04-01$1,269.98$204.36RVU24B
2024-03-09$1,269.98$204.36RVU24AR
2024-01-01$1,249.25$201.03RVU24A
2023-10-01$1,327.89$206.81RVU23D
2023-07-01$1,319.23$207.05RVU23C
2023-04-01$1,319.23$207.05RVU23B
2023-01-01$1,319.23$207.05RVU23A
2022-10-01$1,399.70$213.33RVU22D
2022-07-01$1,399.70$213.33RVU22C
2022-04-01$1,399.70$213.33RVU22B
2022-01-01$1,399.70$213.33RVU22A
2021-10-01$1,702.92$213.73RVU21D
2021-07-01$1,702.92$213.73RVU21C
2021-04-01$1,702.92$213.73RVU21B
2021-01-01$1,702.92$213.73RVU21A
2020-10-01$1,933.45$222.94RVU20D
2020-07-01$1,933.45$222.94RVU20C
2020-04-01$1,933.45$222.94RVU20B
2020-01-01$1,933.45$222.94RVU20A
2019-10-01$2,188.20$223.03RVU19D
2019-07-01$2,188.20$223.03RVU19C
2019-04-01$2,188.20$223.03RVU19B
2019-01-01$2,188.20$223.03RVU19A
2018-10-01$2,484.52$223.88RVU18D
2018-07-01$2,484.52$223.88RVU18C
2018-04-01$2,484.52$223.88RVU18B
2018-01-01$2,484.52$223.88RVU18AR1
2017-10-01$2,116.35$207.36RVU17D
2017-07-01$2,116.35$207.36RVU17C
2017-04-01$2,116.35$207.36RVU17B
2017-01-01$2,116.35$207.36RVU17A
2016-10-01$1,803.58$190.62RVU16D
2016-07-01$1,803.58$190.62RVU16C
2016-04-01$1,803.58$190.62RVU16B
2016-01-01$1,803.58$190.62RVU16A
2015-10-01$1,824.26$192.04RVU15D
2015-07-01$1,824.26$192.04RVU15C
2015-04-01$1,815.18$191.09RVU15B
2015-01-01$1,815.18$191.09RVU15A
2014-10-01$895.27$190.75RVU14D
2014-07-01$895.27$190.75RVU14C
2014-04-01$895.27$190.75RVU14B
2014-01-01$895.27$190.75RVU14A
2013-10-01Not in this releaseNot in this releaseRVU13D
2013-07-01Not in this releaseNot in this releaseRVU13C
2013-04-01Not in this releaseNot in this releaseRVU13B
2013-01-01Not in this releaseNot in this releaseRVU13AR

Price 37237 for an earlier date of service

Where the Puerto Rico rate applies

Puerto Rico is a Medicare payment area, not a city. Our Census mapping connects it to 292 cities and communities in Puerto Rico. Some span more than one payment area; confirm with the service ZIP.

  • Aceitunas
  • Adjuntas
  • Aguada
  • Aguadilla
  • Aguas Buenas
  • Aguas Claras
  • Aguilita
  • Aibonito

Browse all communities in Puerto Rico

37237 billing questions

When should 37237 be used instead of 37236?

Use 37236 for the initial qualifying artery treated and 37237 for each additional qualifying artery treated in the session.

Does another stent in the same artery support 37237?

No. The add-on is based on an additional artery, not the number of stents or lesions treated within one artery.

Can 37237 be billed by itself?

No. It is an add-on code and must be reported with a primary procedure, typically 37236 for the initial artery.

What documentation supports an additional unit?

Document each distinct additional artery treated and the stent placement performed in that artery. The operative report should make clear which artery was the initial vessel and which were additional.

Does 37237 have a separate global period?

CMS states that the add-on is paid within the primary procedure’s global period.

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 37237PPRRVU2026_Oct_nonQPP.csv, line 4,600 (RVU26D)
Geographic factors for Puerto RicoGPCI2026.csv, line 91 (RVU26D)

Open CMS sourceHow we calculate rates

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