Summary & Overview
CPT 75705: Spinal Angiography, Supervision and Interpretation
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.
Billing Code Overview
CPT code 75705 describes the radiological supervision and interpretation of an angiographic study involving the selective placement of a catheter in the spinal area. The procedure uses a radiopaque contrast agent to visualize spinal blood vessels under X-ray to assist physicians in diagnosing and planning treatment for vascular conditions affecting the spine.
Service Type: Diagnostic radiology — spinal angiography, supervision and interpretation
Typical Site of Service: Hospital radiology department, outpatient imaging center, or specialized angiography suite
Clinical & Coding Specifications
Clinical Context
A 62-year-old patient with progressive lower extremity radiculopathy and suspected spinal vascular malformation is referred for diagnostic spinal angiography. The procedure is scheduled in an outpatient hospital radiology suite or an inpatient interventional radiology (IR) suite when performed during hospitalization. Under fluoroscopic guidance, an interventional radiologist performs selective catheterization of spinal segmental arteries and injects iodinated contrast while acquiring angiographic images for radiological supervision and interpretation billed under 75705. The workflow includes pre-procedure informed consent, review of prior imaging (MRI or CT), vascular access (typically femoral or radial), selective catheter placement into spinal arterial branches, acquisition of angiographic runs, interpretation by the radiologist, and post-procedure monitoring for contrast reaction, access site complications, or neurological changes. Results guide diagnosis (e.g., dural arteriovenous fistula, spinal AVM, tumor vascular supply) and inform potential subsequent therapeutic procedures such as embolization or surgical planning.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When billing only the physician interpretation/supervision separate from technical services provided by facility or another entity |