Common truncus

This code represents a rare and severe congenital heart defect where a single great artery arises from both ventricles, supplying the systemic, pulmonary, and coronary circulations. It is characterized by a large ventricular septal defect (VSD) and a common truncal valve.

Use this code when documentation clearly indicates a diagnosis of common truncus arteriosus, also known as persistent truncus arteriosus. This diagnosis is typically made prenatally or shortly after birth based on echocardiography and other imaging studies.

• Always look for documentation specifying the type of truncus (e.g., Van Praagh classification) for potential additional specificity, though this ICD-9 code is broad.
• Ensure the documentation differentiates common truncus from other complex congenital heart defects like Tetralogy of Fallot or Double Outlet Right Ventricle.
• Code any associated cardiac anomalies, such as VSD or patent ductus arteriosus, separately if documented.