ICD-11 MMS 2026-01
Atrioventricular block, second degree
Description
Disorder of the atrioventricular conduction system in which some but not all atrial impulses fail to propagate to the ventricles. Electrocardiographically, some P waves are not followed by a QRS complex.
Exclusions from above levels
01 – Certain infectious or parasitic diseases05 – Endocrine, nutritional or metabolic diseases18 – Complications of pregnancy, childbirth and the puerperium
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19 – Certain conditions originating in the perinatal period20 – Congenital malformations, deformations and chromosomal abnormalities22 – Injury, poisoning or certain other consequences of external causes
Child codes
BC63.10 – High-grade second degree atrioventricular blockBC63.1Y – Other specified atrioventricular block, second degreeBC63.1Z – Atrioventricular block, second degree, unspecified
Sibling codes
BC63.0 – Atrioventricular block, first degreeBC63.2 – Complete atrioventricular blockBC63.3 – Right bundle branch blockBC63.4 – Left bundle branch blockBC63.5 – Nonspecific intraventricular conduction delayBC63.Y – Other specified conduction disordersBC63.Z – Conduction disorders, unspecified
Part of: BC63: Conduction disorders › 11: Diseases of the circulatory system