LA05.4

ICD-11 MMS 2026-01

Arrhinencephaly

Description

A condition caused by failure of the olfactory organs to correctly develop during the antenatal period. This condition is characterised by absence of the olfactory bulbs and tracts.

Index terms

  • Arrhinencephaly
  • Arhinencephaly

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
  • LA05.3 – Corpus callosum agenesis
  • 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

Arrhinencephaly – http://id.who.int/icd/entity/314107400

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