BC63.4Z

ICD-11 MMS 2026-01

Left bundle branch block, fascicle unspecified

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

  • BC63.40 – Left anterior fascicular block
  • BC63.41 – Left posterior fascicular block

Foundation entity

Left bundle branch block – http://id.who.int/icd/entity/1553795531

Allowed postcoordination axes

Part of: BC63.4: Left bundle branch block › BC63: Conduction disorders › 11: Diseases of the circulatory system