Summary & Overview
CPT 36100: Carotid or Vertebral Artery Access by Needle or Intracatheter
CPT code 36100 represents percutaneous arterial access by needle or intracatheter into the carotid or vertebral artery for diagnostic or therapeutic neurovascular procedures. This code captures a key technical access step used in cerebral angiography and endovascular treatment of carotid or vertebral pathology. Nationally, accurate coding of this access procedure matters for clinical documentation, resource use measurement, and alignment of billing with the complexity of endovascular neurointerventions.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context for CPT code 36100, typical sites of service, and common billing practices. The publication summarizes benchmark considerations, coding guidance essentials, and policy-related updates that affect national billing and claims processing for arterial access in carotid and vertebral procedures.
The report is intended to help coding professionals, revenue cycle managers, and clinical program leads understand where CPT code 36100 fits in procedural workflows, how payers typically view arterial access claims, and what documentation elements usually support appropriate coding. Data not available in the input will be noted where relevant.
Billing Code Overview
CPT code 36100 describes the insertion of a needle or intracatheter into the carotid or vertebral artery to diagnose or treat vascular and neurologic disorders. This procedure is an arterial access maneuver intended for cerebral angiography, endovascular diagnostic procedures, or therapeutic interventions involving the carotid or vertebral circulation.
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Service type: Vascular arterial access for diagnostic or interventional neurovascular procedures
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Typical site of service: Hospital inpatient or outpatient interventional radiology suite, catheterization laboratory, or specialized endovascular operating room
Clinical & Coding Specifications
Clinical Context
A typical patient is a 62-year-old male with sudden-onset focal neurological deficits and suspected cerebrovascular disease presenting to the emergency department. After initial stabilization and noninvasive imaging (CT/MR brain, CTA/MRA), the neurology team determines that diagnostic catheter angiography of the extracranial carotid and intracranial vertebral-basilar circulation is required to identify an occlusion, dissection, or high-grade stenosis. In the interventional radiology or neurointerventional suite, the vascular access team obtains arterial access (commonly femoral or radial). The interventionalist advances a catheter and inserts a needle or intracatheter into the carotid or vertebral artery to perform contrast angiography and, if indicated, deliver intra-arterial thrombolytics, perform mechanical thrombectomy, or place stents. Typical workflow steps include informed consent, conscious sedation or monitored anesthesia care, arterial puncture and sheath placement, selective catheterization of the target carotid or vertebral artery, diagnostic runs or therapeutic device deployment, hemostasis, and post-procedure neurologic monitoring in a step-down or intensive care setting. Typical site of service is an inpatient hospital angiography/interventional suite or outpatient hospital-based angiography suite when clinically appropriate.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When reporting only the physician interpretation or professional portion of imaging/diagnostic services if technical component billed separately. |