Billing code 37237: Arterial stentMedicare rate & RVUs in Missouri
Reports stent placement in each additional qualifying artery during the same session as initial arterial stenting, when treatment extends beyond the first artery.
Medicare pays $1,071.12–$1,166.06 for 37237 in the office in Missouri, from Rest Of Missouri to Metropolitan St. Louis. Which amount applies depends on the service address.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 9 sections
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.
Where 37237 pays more and less in Missouri
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
3 payment localities
$1071.12 to $1166.06
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Kansas City | $1,151.65 | $185.97 |
| Metropolitan St. Louis | $1,166.06 | $187.01 |
| Rest Of Missouri | $1,071.12 | $184.63 |
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
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.
Payment rules and modifiers for 37237
The CMS indicators that decide how 37237 is paid alongside other services.
CMS payment indicators · 37237
Arterial stent
| Rule | CMS value | What it means |
|---|---|---|
| Global period | ZZZ | Add-on code: falls within the primary procedure’s global period. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
37237 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 37236Arterial stent
- 37236 reports stenting in the initial qualifying artery; 37237 reports each additional qualifying artery treated.
- 37239Venous stenting
- 37239 is the add-on for each additional vein, while 37237 is for each additional qualifying artery.
- 37238Venous stenting
- 37238 reports stenting in the initial qualifying vein; 37237 applies to an additional qualifying artery.
- 37215Transcath stent cca w/eps
- 37215 is the dedicated cervical carotid stenting code when embolic protection is used; 37237 is for additional arteries in its own code family.
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
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