Summary & Overview
CPT 36226: Thoracic Aorta and Aortic Arch Angiography, Imaging Supervision and Interpretation
CPT code 36226 represents the imaging supervision and interpretation component of catheter-based angiography when a catheter is advanced through a distal artery into the thoracic aorta and aortic arch and contrast material is injected to obtain diagnostic X‑ray images. This code captures physician oversight and image interpretation for procedures that evaluate the thoracic aorta and aortic arch for aneurysm, dissection, stenosis, or other vascular disease. Nationally, accurate use of this code affects clinical documentation, interventional radiology and vascular surgery billing workflows, and aggregate utilization reporting for advanced vascular imaging.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical context for the code, typical sites of service, and a rundown of common modifiers. The publication summarizes payer coverage patterns and billing considerations, presents national benchmark metrics where available, and highlights recent policy or guideline updates relevant to angiographic imaging supervision and interpretation. The content is intended to inform clinicians, coding professionals, and policy analysts about appropriate coding practice and the administrative context surrounding CPT code 36226.
Billing Code Overview
CPT code 36226 describes imaging supervision and interpretation for angiography performed by catheterization through a distal artery into the thoracic aorta and aortic arch. During this procedure, contrast material is injected and X‑ray images are obtained to evaluate the thoracic aorta and aortic arch for vascular disease.
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Service type: Diagnostic angiographic imaging supervision and interpretation
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Typical site of service: Hospital radiology or interventional suite, ambulatory surgical center, or specialized imaging center
Clinical & Coding Specifications
Clinical Context
A 68-year-old patient with a history of hypertension, hyperlipidemia, and transient ischemic attacks presents with worsening episodes of jaw claudication and focal neurologic symptoms suspicious for carotid or aortic arch atheroembolism. Noninvasive testing (carotid duplex, CTA chest/neck) is equivocal for disease involving the distal subclavian artery and aortic arch origins. The vascular interventional team schedules catheter-directed thoracic aortography with arch vessels imaging. In the angiography suite, under conscious sedation or monitored anesthesia care, an arterial sheath is placed via a distal arterial access (commonly radial or brachial). A catheter is advanced into the thoracic aorta and aortic arch; iodinated contrast is injected while fluoroscopic images are obtained. The proceduralist performs imaging supervision and interpretation, documents catheter position, contrast volumes, radiographic findings (stenosis, ulceration, thrombus, dissection flap), and communicates results to the referring vascular surgeon or neurologist for planning treatment (medical therapy, endovascular intervention, or surgical repair). Typical documentation includes access site, catheters used, injections performed, images obtained, interpretation, and any immediate complications.
Typical site of service: Hospital-based angiography suite or outpatient ambulatory catheterization lab.
Service type: Diagnostic vascular angiography with imaging supervision and interpretation of the thoracic aorta and aortic arch performed via distal arterial catheter access.
Coding Specifications
| Modifier | Description | When to Use |
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