Summary & Overview
CPT 61698: Intracranial Vertebrobasilar Aneurysm Repair
CPT code 61698 represents an intracranial surgical repair of a complex aneurysm in the internal vertebrobasilar circulation, a critical posterior brain vascular territory. Nationally, this code captures high-acuity neurosurgical interventions typically performed to address ruptured or high-risk posterior circulation aneurysms and is relevant to hospital inpatient and specialized outpatient operating settings. Key payers commonly involved in coverage and reimbursement for this service include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find a concise clinical context for the procedure, the typical sites of service, and the payer landscape relevant to this high-complexity neurosurgical code. The publication outlines common modifiers associated with the code, notes the absence of input data for associated taxonomies, specific ICD-10 diagnoses, and related codes, and provides benchmarks and policy considerations where available. The summary aims to clarify coding intent and payer relevance for stakeholders managing coverage, billing, or utilization of complex intracranial aneurysm repair services.
Billing Code Overview
CPT code 61698 describes an intracranial surgical procedure to repair a complex aneurysm located in the internal vertebrobasilar circulation. The procedure addresses an abnormal dilation of a blood vessel in the posterior circulation of the brain — including branches such as the posterior cerebral and cerebellar arteries — and is performed to treat aneurysms that may have caused or been caused by a subarachnoid hemorrhage.
-
Service type: Intracranial surgical repair of complex vertebrobasilar aneurysm
-
Typical site of service: Inpatient or outpatient hospital operating room or neurosurgical suite
Clinical & Coding Specifications
Clinical Context
A 58-year-old female presents to the emergency department with sudden-onset severe occipital headache, photophobia, and transient loss of consciousness. CT head demonstrates subarachnoid hemorrhage. CT angiography identifies a ruptured, complex fusiform aneurysm of the posterior inferior cerebellar artery (PICA) within the vertebrobasilar circulation. Neurosurgery evaluates the patient and determines that an open intracranial surgical repair is required due to aneurysm morphology and vessel involvement, and endovascular options are not feasible.
Preoperative workflow includes neurologic and vascular imaging (CT angiography, digital subtraction angiography), informed consent documenting risks of posterior circulation surgery, baseline neurologic exam, and medical optimization. Intraoperative management involves general anesthesia, neurophysiologic monitoring, microsurgical exposure of the vertebrobasilar region, proximal and distal control of the affected vessel, aneurysm clipping or bypass/reconstruction as needed, and hemostasis. Postoperative care includes intensive care unit monitoring for vasospasm, repeat vascular imaging to confirm repair, management of intracranial pressure, and a multidisciplinary rehabilitation plan if deficits occur.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
62 | Two surgeons | Used when two surgeons work together as primary surgeons on a portion of the procedure, such as when complex posterior circulation repair requires dual surgical teams. |