Implantable Cardioverter Defibrillator
Transvenous implantable cardioverter defibrillator use for primary prevention may be considered medically necessary in adults with ischemic cardiomyopathy, nonischemic dilated cardiomyopathy, hypertrophic cardiomyopathy, cardiac ion channelopathies or cardiac sarcoid when the listed criteria are met, and for secondary prevention after a life-threatening ventricular arrhythmic event. A subcutaneous ICD may be considered medically necessary when the listed criteria are met, including a contraindication to a transvenous ICD, while an extravascular ICD is considered investigational. Effective 10/01/2026, ICD-10 diagnosis codes I42.00, I42.01, I42.09, I42.81, I42.89, I47.22, I49.81, I49.82 and I49.89 were added, and I42.0, I42.8 and I49.8 were deleted as of 09/30/2026.