ICD-10-CM > I00-I99 > I30-I5A > I44 > I44.1 I44.1 Atrioventricular block, second degree Billable/Specific Copy Code Copy Description Applicable To Atrioventricular block, type I and IIMöbitz block, type I and IISecond degree block, type I and IIWenckebach's block