LA05.3

ICD-11 MMS 2026-01

Corpus callosum agenesis

Description

Corpus callosum agenesis is the most common brain malformation and is characterised by total or partial absence of the main interhemispheric commissure, the corpus callosum.

Index terms

  • Corpus callosum agenesis
  • ACC - [agenesis of corpus callosum]
  • absence of corpus callosum
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  • absent corpus callosum
  • aplasia of corpus callosum
  • congenital absence of corpus callosum
  • congenital malformation of corpus callosum
  • deformity of corpus callosum
  • hypoplasia of corpus callosum
  • hypoplastic corpus callosum

Exclusions from above levels

  • LA01 – Encephalocele
  • http://id.who.int/icd/entity/733825440 – Inborn errors of metabolism

Sibling codes

  • LA05.0 – Microcephaly
  • LA05.1 – Megalencephaly
  • LA05.2 – Holoprosencephaly
  • LA05.4 – Arrhinencephaly
  • LA05.5 – Abnormal neuronal migration
  • LA05.6 – Encephaloclastic disorders
  • LA05.7 – Brain cystic malformations
  • LA05.8 – Colpocephaly
  • LA05.Y – Other specified cerebral structural developmental anomalies
  • LA05.Z – Cerebral structural developmental anomalies, unspecified

Foundation entity

Corpus callosum agenesis – http://id.who.int/icd/entity/2012425106

Part of: LA05: Cerebral structural developmental anomalies › 20: Developmental anomalies