AHA Coding Clinic® for ICD-9 - 2005 Issue 3

Cardiac Resynchronization Therapy

The Central Office on ICD-9-CM has received numerous questions since the creation of new procedure codes for cardiac resynchronization therapy (CRT) or biventricular pacing. Cardiac resynchronization therapy with or without a defibrillator involves placing electrical leads in the right atrium, the right ventricle and into the coronary sinus. The coronary sinus is a venous channel that empties into the right atrium, and it is fed by cardiac veins that lie on the outside of the left ventricle. When successful, the coronary sinus lead is advanced into one of the cardiac veins so that it can lie next to the...

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