CPT® Code 93575

Add-On Code

Injection procedure during cardiac catheterization including imaging supervision, interpretation, and report; for selective pulmonary angiography of major aortopulmonary collateral arteries (MAPCAs) arising off the aorta or its systemic branches, during cardiac catheterization for congenital heart defects, each distinct vessel (List separately in addition to code for primary procedure)

The CPT® Code 93575 refers to an injection procedure performed during cardiac catheterization, specifically for selective pulmonary angiography of major aortopulmonary collateral arteries (MAPCAs) that arise from the aorta or its systemic branches. This procedure is particularly relevant in the context of congenital heart defects, where MAPCAs serve as alternative pathways for blood flow to the lungs. In normal physiology, blood is directed to the lungs via the pulmonary arteries; however, in patients with MAPCAs, blood is instead supplied through these collateral arteries directly off the aorta. This condition is often identified in newborns and can be associated with other congenital anomalies such as Tetralogy of Fallot, pulmonary valve atresia, or ventricular septal defects. During the cardiac catheterization, a catheter is carefully advanced into the aorta, and a guidewire is utilized to locate the targeted aortopulmonary collateral vessels. Once the catheter is positioned correctly, contrast material is injected to visualize the blood flow through these vessels via angiography. This imaging process allows for the assessment of any abnormalities in the collateral arteries. Each distinct vessel that undergoes angiography is reported separately using code 93575, ensuring that the complexity and extent of the procedure are accurately captured. Throughout the procedure, the patient's vital signs, including arterial pressure, heart rhythm, and oxygen saturation, are closely monitored to ensure safety and to detect any potential complications, such as allergic reactions or arrhythmias.