Summary & Overview
CPT 74185: MRI Angiography of Abdominal Blood Vessels
CPT code 74185 represents MRI-based evaluation of abdominal blood vessels (MRI angiography of the abdomen), performed with or without contrast. This imaging code is widely used for noninvasive vascular assessment, staging of vascular disease, preoperative planning, and monitoring postoperative or endovascular repairs. Its national relevance stems from the role of advanced cross-sectional vascular imaging in diagnosing aortic aneurysms, visceral arterial disease, renal artery pathology, and other abdominal vascular conditions.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical contexts in which CPT code 74185 is applied, common sites of service, and the scope of services captured by the code. The publication also outlines what to expect in benchmark reporting and policy updates affecting imaging utilization and coverage determinations at a national level.
This piece is intended to inform radiology groups, billing and coding staff, and healthcare policy audiences about the clinical purpose of CPT code 74185, the payer landscape relevant to national discussions, and the types of benchmarks and policy changes that typically affect reimbursement and utilization for abdominal MR angiography.
Billing Code Overview
CPT code 74185 describes magnetic resonance imaging (MRI) evaluation of the blood vessels in the abdomen. The procedure may be performed with or without the use of intravenous contrast material.
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Service type: Diagnostic vascular imaging (MRI angiography of the abdomen)
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Typical site of service: Outpatient imaging center or hospital radiology department
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Clinical & Coding Specifications
Clinical Context
A 62-year-old male with longstanding hypertension and peripheral vascular disease presents with new-onset abdominal pain and an abnormal duplex ultrasound suggesting possible renal artery stenosis. The referring vascular surgeon requests a noninvasive vascular imaging study to evaluate the abdominal aorta and visceral and renal arteries. The patient arrives at the outpatient imaging center; MRI safety screening is completed (assessing implanted devices, renal function, and contrast allergies). The MRI technologist performs a contrast-enhanced magnetic resonance angiography (MRA) of the abdomen using a dedicated vascular protocol; if contrast is contraindicated due to impaired renal function, a non-contrast MRA technique (time-of-flight or phase-contrast) is used. The interpreting radiologist documents vessel origin, stenosis severity, aneurysm, dissection, or occlusion and issues a formal report to the referring physician. Billing is submitted under 74185 for MRI of abdominal blood vessels, specifying contrast usage or non-contrast as indicated and applying applicable modifiers for professional/component, technical, or circumstance-specific billing adjustments.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the interpreting physician's service separate from technical component. |