8A03.20

ICD-11 MMS 2026-01

Late onset cerebellar cortical atrophy

Description

This is a sporadic late onset cerebellar cortical atrophy with progressive ataxia. Neuropathologically it is characterised by diffuse cerebellar cortical lesions and absence of neuronal loss in the dorsomedial part of the inferior olives.

Index terms

  • Late onset cerebellar cortical atrophy

Excludes

Exclusions from above levels

  • 6A06 – Stereotyped movement disorder
  • 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
  • 22 – Injury, poisoning or certain other consequences of external causes

Sibling codes

  • 8A03.2Y – Other specified non-hereditary degenerative ataxia
  • 8A03.2Z – Non-hereditary degenerative ataxia, unspecified

Foundation entity

Late onset cerebellar cortical atrophy – http://id.who.int/icd/entity/47298761

Part of: 8A03.2: Non-hereditary degenerative ataxia › 8A03: Ataxic disorders › 08: Diseases of the nervous system