CPT 75635Radiology

Ct angio abdominal arteries

CPT code 75635 covers a CT angiography scan of the abdominal arteries, which uses X-ray imaging and contrast dye to create detailed pictures of the blood vessels supplying the abdomen and internal organs.

Showing rates for

National Average

Base Medicare rate

$404.65

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

2.4

PE RVU (NF)

9.94

MP RVU

0.17

Total RVU

12.51

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

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Billing tips

Always verify that contrast was actually administered and documented - 75635 is a contrast-enhanced study and will be denied if contrast documentation is missing
Impact: Prevents 100% denial ($404.65 loss) and potential downcoding to non-contrast CT abdomen (74150) which pays approximately $150 less
Document specific indication for arterial imaging (aneurysm evaluation, mesenteric ischemia, etc.) rather than generic 'abdominal pain' to establish medical necessity
Impact: Reduces denial rate by 40-60% based on Medicare LCD requirements; prevents loss of full $404.65 payment
Bill professional component (modifier 26) and technical component (modifier TC) separately if radiologist and facility are different entities to maximize legitimate reimbursement
Impact: Ensures both entities receive appropriate payment shares without leaving money on table or creating coordination of benefits issues
Do not bundle 75635 with venous phase imaging - if both arterial and venous phases are performed, consider additional codes for venous imaging based on protocol
Impact: Can capture additional $100-200 in appropriate reimbursement when comprehensive vascular imaging is medically necessary and documented
Submit claims within 30 days of service date and ensure NPI matches interpreting physician listed in radiology report
Impact: Timely filing prevents automatic denials; NPI mismatches cause 15-20% of initial denials requiring costly resubmission
Use appropriate ICD-10 codes that support arterial imaging necessity (I71.4 for AAA, K55.1 for mesenteric ischemia, I15.0 for renovascular hypertension)

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 75635 in 2025?

The 2025 Medicare national average payment for CPT 75635 is $404.65 for both facility and non-facility settings. This rate is based on 12.51 total RVUs (2.4 work RVU, 9.94 PE RVU, 0.17 MP RVU) multiplied by the 2025 conversion factor of 32.3465.

Does CPT 75635 require contrast administration?

Yes, CPT 75635 is inherently a contrast-enhanced study. The code specifically describes CT angiography, which requires intravenous contrast injection to visualize arterial vessels. Documentation must include contrast type, dose, and timing. Without contrast administration, a different non-contrast CT code should be used.

Can CPT 75635 be billed with modifier 26 for professional component only?

Yes, modifier 26 should be appended when billing only the professional component (physician interpretation). This is appropriate when the radiologist reads a study performed at a separate facility. The technical component (equipment, technologist, supplies) would be billed separately by the facility using modifier TC.

What diagnosis codes support medical necessity for CPT 75635?

Common supporting ICD-10 codes include I71.4 (abdominal aortic aneurysm), K55.1 (chronic mesenteric ischemia), I15.0 (renovascular hypertension), I77.2 (arterial dissection), and R10.0 (acute abdominal pain with vascular concern). The diagnosis must justify arterial-phase imaging specifically, not just general abdominal imaging.

How many RVUs is CPT code 75635 worth in 2025?

CPT 75635 has 12.51 total RVUs in 2025, consisting of 2.4 work RVUs, 9.94 practice expense RVUs, and 0.17 malpractice RVUs. These values are from the CMS Medicare Physician Fee Schedule RVU25A released December 23, 2024.

What is the difference between CPT 75635 and 74175?

CPT 75635 is a CT angiography specifically targeting abdominal arteries with arterial-phase timing and vascular protocol, while 74175 is a general CT abdomen and pelvis with contrast. Code 75635 is used for vascular evaluation (aneurysms, stenosis), whereas 74175 evaluates solid organs, bowel, and soft tissues. They have different indications and should not be confused.

Can CPT 75635 be billed bilaterally or with units greater than 1?

No, CPT 75635 is unilateral/bilateral status indicator '0' meaning the code itself encompasses all abdominal arteries imaged during one examination. Bill only one unit per study session. Multiple units would be denied as duplicates unless performed on separate dates with documented new clinical indication justifying repeat imaging.