Summary & Overview
CPT 70496: CT Angiography of Head with Intravenous Contrast
CPT code 70496 represents CT angiography of the head with intravenous contrast, a widely used diagnostic imaging procedure to visualize cerebral vasculature for stroke evaluation, aneurysm assessment, and vascular malformation detection. Nationally, this service is important for acute neurovascular care pathways and influences hospital imaging utilization, emergency department workflows, and outpatient vascular workups. The code bundles noncontrast images and post–processing when performed, clarifying billing scope for combined image sets.
Key payers considered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context and service settings, common modifiers and billing considerations, and how this code is positioned relative to related CT and angiography services. The publication outlines typical sites of service and operational implications for facilities providing contrast-enhanced head vascular imaging.
This summary equips billing managers, radiology administrators, and policy analysts with a concise reference to the clinical purpose and billing scope of CPT code 70496, plus what to expect in payer coverage reviews and coding workflows. Data not available in the input will be noted where applicable in detailed sections.
Billing Code Overview
CPT code 70496 describes a computed tomographic (CT) angiography procedure of the head in which contrast material is injected into a peripheral vein and vascular imaging of the head is performed. Noncontrast images, when performed, and image post–processing are included in this procedure. This is an imaging service that evaluates intracranial and extracranial cerebral vasculature using CT technology with intravenous contrast.
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Service type: Diagnostic imaging — CT angiography of the head with intravenous contrast
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Typical site of service: Hospital outpatient departments, dedicated imaging centers, and ambulatory surgical centers equipped for contrast-enhanced CT and vascular imaging
Clinical & Coding Specifications
Clinical Context
A typical patient is a 58-year-old who presents to the Emergency Department with acute onset severe headache, focal neurologic deficit, or subacute symptoms suggesting cerebrovascular disease. The ED physician orders a computed tomography angiography (CTA) of the head to evaluate intracranial arterial anatomy for suspected acute ischemic stroke, intracranial aneurysm, arterial dissection, or vascular malformation. The patient is screened for contrast allergy and renal function; an IV peripheral access is placed by nursing or radiology staff. Contrast material is injected via a power injector into a peripheral vein while the patient is positioned in the CT scanner. Noncontrast head images may be performed first to assess for hemorrhage; the CTA is acquired during arterial phase after contrast bolus timing. The technologist performs image post-processing (including multiplanar reconstructions and 3D angiographic reformats). The interpreting radiologist documents a structured report describing arterial stenosis, occlusion, aneurysm, dissection flap, or other vascular pathology and provides urgent communication to the treating team when indicated. Typical sites of service are the hospital radiology department, emergency department, or outpatient imaging center.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when only the physician interpretation/report is billed separate from the technical component. |