CPT code 75705 covers the radiological supervision and interpretation component of a spinal angiography procedure in which a catheter is selectively placed to visualize spinal vasculature using contrast dye. This code is significant nationally because spinal angiography is a specialized diagnostic service used for evaluation of vascular malformations, arteriovenous fistulae, aneurysms, and other complex spinal blood-vessel pathologies that often require coordination among radiology, neurosurgery, and vascular specialties. Payer coverage and reimbursement policies for this technical service component influence access to specialized imaging in hospitals and outpatient imaging centers.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for spinal angiography, typical sites of service, and the role of the radiologist in supervision and interpretation. The publication also outlines common modifiers used with radiology professional services, notes on payer ordering and prior authorization practices where available, and benchmarking approaches for coding accuracy and billing compliance.

The material is intended for billing professionals, radiology and vascular specialists, and policy analysts seeking clarity on how CPT code 75705 is applied, documented, and adjudicated across major national payers. Data not available in the input will be noted where relevant.