BC63.3

ICD-11 MMS 2026-01

Right bundle branch block

Description

Disorder of the atrioventricular conduction system characterised by prolonged QRS duration (greater than or equal to 120 ms in adults, greater than 100 ms in children ages 4 to 16 years, and greater than 90 ms in children less than 4 years of age), rsr, rsR, or rSR in leads V1 or V2, S wave of greater duration than R wave (or greater than 40 ms in leads I and V6 in adults)

Index terms

  • Right bundle branch block
  • Complete right bundle branch block
  • Incomplete right bundle branch block

Inclusions

  • Incomplete right bundle branch block

Exclusions from above levels

  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
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  • 19 – Certain conditions originating in the perinatal period
  • 20 – Congenital malformations, deformations and chromosomal abnormalities
  • 22 – Injury, poisoning or certain other consequences of external causes

Sibling codes

  • BC63.0 – Atrioventricular block, first degree
  • BC63.1 – Atrioventricular block, second degree
  • BC63.2 – Complete atrioventricular block
  • BC63.4 – Left bundle branch block
  • BC63.5 – Nonspecific intraventricular conduction delay
  • BC63.Y – Other specified conduction disorders
  • BC63.Z – Conduction disorders, unspecified

Foundation entity

Right bundle branch block – http://id.who.int/icd/entity/1434611572

Allowed postcoordination axes

Part of: BC63: Conduction disorders › 11: Diseases of the circulatory system