Question: My cardiologist documented a diagnosis of ventricular tachycardia. Which ICD-10-CM code should I report for this diagnosis? Nebraska Subscriber Answer: You should report I47.2 (Ventricular tachycardia) for ventricular tachycardia, which is a fast heart rhythm that starts in the lower chambers of the heart. Don’t miss: Code I47.2, covers both sustained and non-sustained ventricular tachycardia as well as a rare condition called Torsades de Pointes (TdP). Sustained ventricular tachycardia can degenerate into ventricular fibrillation, which is a chaotic, rapid beating of the heart, often described as a quivering of the ventricles. Ventricular fibrillation, if not treated, will lead to cardiac arrest where the heart stops beating mechanically.