CPT code 61642 denotes additional intracranial angioplasty and balloon dilatation performed on a second intracranial vessel in a different vascular territory after initial balloon dilatation for vasospasm. This code captures a distinct, same-session endovascular intervention targeting an additional territory and is relevant for hospitals and neurointerventional providers managing cerebral vasospasm complications following subarachnoid hemorrhage or other causes of vasospasm. Nationally, accurate use of this CPT code supports appropriate clinical documentation, claims adjudication, and resource planning for complex neuroendovascular care.

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 context and service setting, typical billing considerations, and what to expect in payer coverage patterns and claim review. The publication highlights benchmarks for utilization and reimbursement where available, summarizes recent policy or coding guidance affecting intracranial angioplasty for vasospasm, and clarifies distinctions between initial and additional vessel procedures coded during the same session. Data not available in the input is identified where applicable.