LA05.51

ICD-11 MMS 2026-01

Cortical dysplasia

Description

A condition caused by failure of the cortex to correctly develop during the antenatal period, or by trauma. This condition is characterised by epileptic seizures. This condition may also present with learning impairments.

Index terms

  • Cortical dysplasia
  • Focal cortical dysplasia
  • Focal cortical dysplasia type I
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  • Focal cortical dysplasia type Ia
  • Focal cortical dysplasia type Ib
  • Focal cortical dysplasia type Ic
  • Focal cortical dysplasia type II
  • Focal cortical dysplasia type IIa
  • Focal cortical dysplasia type IIb
  • Central bilateral macrogyria
  • Rolandic and perisylvian dysplasia

Exclusions from above levels

  • LD20.1 – Lissencephaly
  • LA01 – Encephalocele
  • http://id.who.int/icd/entity/733825440 – Inborn errors of metabolism

Sibling codes

  • LA05.50 – Polymicrogyria
  • LA05.5Y – Other specified abnormal neuronal migration
  • LA05.5Z – Abnormal neuronal migration, unspecified

Foundation entity

Cortical dysplasia – http://id.who.int/icd/entity/1352548261

Allowed postcoordination axes

Part of: LA05.5: Abnormal neuronal migration › LA05: Cerebral structural developmental anomalies › 20: Developmental anomalies