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CPT code 75635: CTA runoff, abdominal aorta and both legs2026 Medicare rate & RVUs

Reports CT angiography of the abdominal aorta and bilateral lower-extremity arterial runoff when evaluating aortoiliac or peripheral arterial disease.

CMS RVU26DEffective Oct 1, 2026109 payment localities108.7K Medicare services in 2024

Medicare pays $411.17 for 75635 nationally in the office.

Medicare rate · 75635

CTA runoff, abdominal aorta and both legs

Office or facility?

Work RVUs
2.34
Total RVUs
12.31
Global days
XXX

National rate · 2026

$411.17

Office setting, before claim adjustments.

See every locality for 75635 →Billed by an NP, PA or therapist? →

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

Your location

Medicare pays by the payment locality where the service is performed.

On this page 10 sections
  1. Medicare rate
  2. What 75635 covers
  3. By payment locality
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Similar codes
  8. Related codes
  9. Billing questions
  10. Sources

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

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

75635 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailableUnavailable
AlaskaUnavailableUnavailable
ArizonaUnavailableUnavailable
ArkansasUnavailableUnavailable
Atlanta, GAUnavailableUnavailable
Austin, TXUnavailableUnavailable
Bakersfield, CAUnavailableUnavailable
Baltimore area, MDUnavailableUnavailable
Beaumont, TXUnavailableUnavailable
Brazoria, TXUnavailableUnavailable

75635 rates by state

Office rate range in each state. Select a state to see its payment localities.

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Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

View every state and territory as a table
75635 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

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

Office or facility?

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

RuleCMS valueWhat it means
Global periodXXXThe global surgery concept doesn’t apply.
Multiple procedures4Diagnostic imaging reduction applies to the technical component (and professional component) of additional services.
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/technical1Diagnostic 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.

When to use modifier 26

75635 compared with similar codes

Compare codes · National

5 codes, side by side

Office or facility?

  • 75635

    CTA runoff, abdominal aorta and both legs2.34 wRVU

    $411.17

  • 75630

    Aortography, with bilateral iliofemoral runoff1.95 wRVU

    $155.65−$255.52

  • 74175

    Abdominal CTA, contrast-enhanced, abdomen only1.77 wRVU

    $304.28−$106.89

  • 74174

    CTA abdomen/pelvis, with contrast2.15 wRVU

    $378.43−$32.74

  • 73706

    CT angiography, lower extremity, without and with contrast1.85 wRVU

    $321.65−$89.52

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.

Codes related to 75635

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

Codes related to 75635
CodeHow it relatesNational office range
Used instead
75630Aortography, with bilateral iliofemoral runoffCatheter-based aortography with bilateral iliofemoral runoff rather than CT angiography.$140.24–$195.86
75625Abdominal aortography, abdominal aorta onlyCatheter-based abdominal aortography when the examination does not include bilateral runoff.$111.66–$158.43
74175Abdominal CTA, contrast-enhanced, abdomen onlyCTA focused on the abdomen when bilateral lower-extremity runoff is not included.No office rate
74174CTA abdomen/pelvis, with contrastCTA of the abdomen and pelvis when bilateral lower-extremity runoff is not included.$333.25–$516.71
73706CT angiography, lower extremity, without and with contrastCTA of a lower extremity when the abdominal aorta is not part of the examination.No office rate

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

Open CMS sourceHow we calculate rates

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