CPT code 75831 denotes the supervision and interpretation of selective venography of one kidney, an invasive diagnostic imaging procedure used to locate and assess the severity of renal venous thrombosis or obstruction. This code is used when a qualified provider oversees contrast injection and interprets the resulting venous radiographs. Nationally, accurate coding for invasive vascular imaging affects clinical documentation, quality reporting, and claims adjudication in hospital and outpatient interventional radiology settings.

Key payers covered in this summary include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical purpose of the procedure, typical settings where it is performed, and the practical coding context for billing and administrative teams. The publication also outlines benchmarking and reimbursement themes, common modifier usage (listed separately), and relevant clinical considerations for interpreting selective renal venography results.

This material is intended to inform billing staff, compliance officers, and clinicians about the role of CPT code 75831 in claims processing and clinical documentation. Data not available in the input is noted where applicable for payor-specific rates, utilization metrics, and associated ICD‑10 diagnoses.