CPT® Code 93584

Add-On Code

Venography for congenital heart defect(s), including catheter placement, and radiological supervision and interpretation; anomalous or persistent superior vena cava when it exists as a second contralateral superior vena cava, with native drainage to heart (List separately in addition to code for primary procedure)

This procedure, identified by CPT® Code 93584, involves venography specifically for congenital heart defects, focusing on the assessment of an anomalous or persistent superior vena cava (SVC). The SVC is a significant vein responsible for returning deoxygenated blood from the upper body to the heart, particularly the right atrium. In pediatric patients with congenital heart defects, the presence of an anomalous SVC can complicate the management and surgical planning of their condition. The most prevalent anomaly is a persistent left-sided SVC, which arises from the left subclavian and internal jugular veins and drains into the right atrium via the coronary sinus. This anatomical variation is observed in approximately 10% of individuals with congenital heart disease. The procedure is typically performed in conjunction with a primary diagnostic cardiac catheterization, particularly in cases such as hypoplastic left heart syndrome, where understanding the vascular anatomy is crucial for planning subsequent surgical interventions, such as cavopulmonary anastomosis. During the venography, a guide catheter is inserted through a venous access sheath and advanced over a guidewire into the superior vena cava. Contrast material is then injected to visualize the anatomy, and images are captured to delineate the course of the anomalous vessel. This detailed imaging is essential for clinicians to accurately assess the vascular structure and make informed decisions regarding further treatment options.