CPT code 37266: Angioplasty, complex, each additional vessel2026 Medicare rate & RVUs in Missouri
Reports angioplasty of each additional complex femoral or popliteal artery vessel treated during an endovascular revascularization, after the applicable first-vessel procedure.
Medicare pays $2,126.00–$2,331.74 for 37266 in the office in Missouri, from Rest of Missouri to Metropolitan St. Louis, MO. 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.
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What 37266 covers
This add-on service represents angioplasty in an additional femoral or popliteal artery vessel when the intervention meets CPT criteria for complex treatment. Vascular surgeons, interventional radiologists, and other qualified specialists commonly perform these procedures in an angiography suite or operating room using endovascular access and imaging. The code counts an additional qualifying vessel, not each separate lesion treated within one vessel; it is for angioplasty rather than a service that includes stent placement.
Report it only with an eligible primary revascularization procedure. Select the complex level using the applicable CPT criteria and document the treated vessel, its anatomy, the intervention performed, and the basis for classifying the work as complex. As an add-on, its payment is within the primary procedure's global period. When the procedure is bilateral and modifier 50 is reported, CMS pays 150%.
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 37266 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
$2126.00 to $2331.74
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Kansas City, MO | $2,301.37 | $179.63 |
| Metropolitan St. Louis, MO | $2,331.74 | $180.63 |
| Rest of Missouri | $2,126.00 | $178.25 |
How the 37266 rate is calculated
Each of 37266’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 · 37266
RVUs × geographic indexes × conversion factor
Work4.00
4.00 RVUs× 1.000 GPCI
Practice expense68.15
68.15 RVUs× 1.000 GPCI
Malpractice0.93
0.93 RVUs× 1.000 GPCI
Adjusted RVUs
73.0800
Conversion factor
$33.4009
Medicare rate
$2,440.94
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 37266
The CMS indicators that decide how 37266 is paid alongside other services.
CMS payment indicators · 37266
Angioplasty, complex, each additional vessel
| 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) | 1 | Bilateral with modifier 50 pays 150% of the fee schedule amount. |
| 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. |
What modifiers do to the payment
Modifier 50 · payment effect
With and without the modifier
37266 without 50 · national office
$2,440.94
Angioplasty, complex, each additional vessel
37266-50 · Bilateral: 150%
$3,661.41
Both sides on one line with modifier 50 are paid at 150% of the fee schedule amount (subject to multiple-procedure rules with other procedures).
37266 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 37265Vessel angioplastyComplex, initial vessel
- 37265 covers the first vessel treated at the complex angioplasty level. Use 37266 for each additional qualifying vessel in the same treatment context.
- 37264Peripheral angioplastyAdditional vessel, simple category
- 37264 is for each additional vessel treated at the simple angioplasty level; 37266 is for additional vessels meeting complex criteria.
- 37270Arterial stentingComplex, each additional vessel
- 37270 covers complex stent treatment of each additional vessel. Use 37266 when the additional-vessel service is complex angioplasty without stent placement.
37266 billing questions
When should 37266 be used instead of 37265?
Use 37265 for the first vessel meeting the complex angioplasty criteria and 37266 for each additional qualifying vessel. The code is not assigned once per lesion within a vessel.
Can 37266 be reported by itself?
No. It is an add-on code and must be billed with an eligible primary revascularization procedure.
Is angioplasty with stent placement reported with 37266?
No. This code represents angioplasty without the stent-placement service. For complex stent treatment of an additional vessel, compare the applicable stent code, including 37270.
How does the global-period payment rule affect 37266?
Payment for this add-on is within the primary procedure's global period; it does not establish a separate global period.
How is bilateral reporting handled?
For a bilateral procedure reported with modifier 50, CMS pays 150%.
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
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