CPT® Code 93595

Left heart catheterization for congenital heart defect(s) including imaging guidance by the proceduralist to advance the catheter to the target zone, normal or abnormal native connections

A left heart catheterization is a specialized medical procedure performed to assess and treat congenital heart defects. This procedure involves the insertion of a catheter into the left side of the heart, which includes the left atrium and left ventricle. The process begins with the preparation of the patient, where the skin over the chosen artery—commonly the brachial, axillary, or femoral artery—is thoroughly cleansed, and a local anesthetic is administered to minimize discomfort. Following this, a needle is used to puncture the artery, and a sheath is placed to facilitate the introduction of the catheter. The proceduralist utilizes imaging guidance to navigate the catheter through the vascular system, threading a guidewire retrograde through the artery and into the aorta, ultimately reaching the left side of the heart. Once the catheter is in place, the guidewire is removed, allowing for direct access to the heart chambers. During the procedure, the aortic valve, left ventricle, mitral valve, and left atrium are carefully inspected. Additionally, pressures within the left ventricle and atrium are measured, along with pressure gradients across the aortic and mitral valves, which are critical for evaluating the heart's function. In cases of congenital heart anomalies, the connections between the heart chambers and the great vessels may differ from normal anatomy. Despite these variations, the procedure is still classified as left heart catheterization. Understanding these connections is vital for diagnosing congenital heart disease, as they determine the flow of blood through the heart. Normal connections allow blood to flow from the left-sided cardiac chambers to the aorta, while abnormal connections may redirect blood through alternative pathways. The CPT® code 93595 is specifically designated for reporting left heart catheterization performed for congenital heart defects, regardless of whether the connections are normal or abnormal.