Free Medical Coding > ICD10 CM > 2024 ICD-10-CM Codes > 2024 ICD-10-CM Codes I00-I99 – Diseases of the circulatory system (I00-I99) > 2024 ICD-10-CM Codes I30-I5A – Other forms of heart disease (I30-I5A) > 2024 ICD-10-CM Codes I44 – Atrioventricular and left bundle-branch block (I44) > 2024 ICD-10-CM Codes I44.3 – Other and unspecified atrioventricular block (I44.3)