cie4dCardiovascular implantable electronic device (CIED) is a term that encompasses pacemakers for bradyarrhythmia treatment, implantable cardioverter defibrillators (ICDs) for tachyarrhythmiaChickahominy Indians Eastern Division (CIED) is a 501(c)3 tax exempt organization separate from the Tribal Government (Chickahominy Indian Tribe – Eastern Division or CIT-ED).