I45.8 Other specified conduction disordersNon-billable header with 2 child codes.
I45.2 Bifascicular blockI45.3 Trifascicular blockI45.4 Nonspecific intraventricular blockI45.5 Other specified heart blockI45.6 Pre-excitation syndromeI45.8 Other specified conduction disorders (this code)I45.81 Long QT syndromeI45.89 Other specified conduction disordersI45.9 Conduction disorder, unspecified