CPT code 75635: CTA runoff, abdominal aorta and both legs2026 Medicare rate & RVUs in Missouri
Reports CT angiography of the abdominal aorta and bilateral lower-extremity arterial runoff when evaluating aortoiliac or peripheral arterial disease.
CMS doesn’t publish an office rate for 75635 in Missouri.
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 75635 covers
This examination uses contrast-enhanced CT to depict the abdominal aorta and arterial circulation through both lower extremities. It is commonly used to assess aortoiliac or peripheral arterial disease, including suspected stenosis or occlusion, and to map vascular anatomy before treatment planning. A technologist acquires the images; a radiologist or other qualified physician interprets them. Noncontrast images, when obtained, and image postprocessing are included in the CTA service.
Report one unit for the combined examination, not a separate unit per leg. The order, clinical indication, documented anatomic coverage, and physician interpretation should support the study. When one entity bills for the complete service, report without a component modifier; use modifier 26 for the professional interpretation or TC for the technical service when those portions are billed separately. CMS applies the diagnostic imaging multiple procedure reduction to both the technical and professional components.
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 75635 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.
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Kansas City, MO | Unavailable | Unavailable |
| Metropolitan St. Louis, MO | Unavailable | Unavailable |
| Rest of Missouri | Unavailable | Unavailable |
How the 75635 rate is calculated
Each of 75635’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 · 75635
RVUs × geographic indexes × conversion factor
Work2.34
2.34 RVUs× 1.000 GPCI
Practice expense9.77
9.77 RVUs× 1.000 GPCI
Malpractice0.20
0.20 RVUs× 1.000 GPCI
Adjusted RVUs
12.3100
Conversion factor
$33.4009
Medicare rate
$411.17
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 75635
The CMS indicators that decide how 75635 is paid alongside other services.
CMS payment indicators · 75635
CTA runoff, abdominal aorta and both legs
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| Multiple procedures | 4 | Diagnostic imaging reduction applies to the technical component (and professional component) of additional services. |
| 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 | 1 | Diagnostic test with separate professional (26) and technical (TC) components. |
What modifiers do to the payment
Modifier 26 · payment effect
With and without the modifier
75635 without 26 · national office
$411.17
CTA runoff, abdominal aorta and both legs
75635-26 · Professional component
$109.55
Pays only the interpretation and report.
75635 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 75630AortographyWith bilateral iliofemoral runoff
- Use 75635 for CT angiography of the abdominal aorta and bilateral lower-extremity runoff. Use 75630 for catheter-based aortography with runoff.
- 74175Abdominal CTAContrast-enhanced, abdomen only
- 74175 covers abdominal CTA; 75635 includes the abdominal aorta and bilateral lower-extremity arterial runoff.
- 74174CTA abdomen/pelvisWith contrast
- 74174 is CTA of the abdomen and pelvis. Choose 75635 when the examination includes bilateral lower-extremity arterial runoff.
- 73706CT angiographyLower extremity, without and with contrast
- 73706 covers lower-extremity CTA without the abdominal aortic coverage included in 75635.
75635 billing questions
How is this different from abdominal aortography with runoff?
75635 is CT angiography. Code 75630 describes catheter-based contrast aortography with bilateral iliofemoral lower-extremity runoff.
Can the interpretation and scan be billed separately?
Yes. Report modifier 26 for the professional interpretation and TC for the technical service; billing without a modifier represents the global service.
Are image postprocessing or noncontrast images separately reported?
They are included in this CTA service when performed as part of the examination.
Should the study be reported once for each leg?
No. Report one unit for the combined examination of the abdominal aorta and bilateral lower-extremity arterial runoff.
How does the multiple procedure reduction affect component claims?
CMS applies the diagnostic imaging multiple procedure reduction to both the technical and professional components.
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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