CPT code 35002 represents an open vascular surgical repair of a ruptured aneurysm or related occlusive disease involving the carotid or subclavian artery accessed via a neck incision. This is a high-acuity, operative procedure used to control hemorrhage, restore arterial integrity, and reestablish perfusion. Nationally, codes for major vascular repairs are critical for hospital billing, resource allocation, and tracking surgical volume for emergency and elective vascular care. Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the procedure, typical sites of service, and which payers are commonly involved in coverage. The publication also outlines commonly reported modifiers and where to look for related documentation and billing considerations. This summary provides an orientation to the procedure and its billing code to support coding accuracy, claims submission, and payer communication. Data not available in the input for items such as associated taxonomies, specific ICD-10 diagnosis mappings, and payer-specific reimbursement benchmarks are noted as unavailable and are not included.