I44.6 Other and unspecified fascicular blockNon-billable header with 2 child codes.
I44.3 Other and unspecified atrioventricular blockI44.30 Unspecified atrioventricular blockI44.39 Other atrioventricular blockI44.4 Left anterior fascicular blockI44.5 Left posterior fascicular blockI44.6 Other and unspecified fascicular block (this code)I44.60 Unspecified fascicular blockI44.69 Other fascicular blockI44.7 Left bundle-branch block, unspecified