BC63.5

ICD-11 MMS 2026-01

Nonspecific intraventricular conduction delay

Description

Disorder of the atrioventricular conduction system characterised by a prolonged QRS duration (QRS duration greater than 110 ms in adults, greater than 90 ms in children 8 to 16 years of age, and greater than 80 ms in children less than 8 years of age) without criteria for right or left bundle branch block.

Index terms

  • Nonspecific intraventricular conduction delay
  • intraventricular block
  • intraventricular block NOS
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  • intraventricular conduction defect
  • Bundle branch block
  • BBB - [bundle branch block]
  • Bundle-branch block NOS
  • Complete bundle branch block
  • Incomplete 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
  • BC63.3 – Right bundle branch block
  • BC63.4 – Left bundle branch block
  • BC63.Y – Other specified conduction disorders
  • BC63.Z – Conduction disorders, unspecified

Foundation entity

Nonspecific intraventricular conduction delay – http://id.who.int/icd/entity/1308812299

Allowed postcoordination axes

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