8A03.2

ICD-11 MMS 2026-01

Non-hereditary degenerative ataxia

Description

Ataxia is characterized by incoordination, due to lesions in the cerebellum and efferent or afferent connections. Sporadic forms of ataxia that present without any family history or known genetic cause. Diagnosis is made after ruling out other causes of ataxia.

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

Child codes

  • 8A03.20 – Late onset cerebellar cortical atrophy
  • 8A03.2Y – Other specified non-hereditary degenerative ataxia
  • 8A03.2Z – Non-hereditary degenerative ataxia, unspecified

Sibling codes

  • 8A03.0 – Congenital ataxia
  • 8A03.1 – Hereditary ataxia
  • 8A03.3 – Acquired ataxia
  • 8A03.Y – Other specified ataxic disorders
  • 8A03.Z – Ataxic disorders, unspecified

Foundation entity

Non-hereditary degenerative ataxia – http://id.who.int/icd/entity/1257393361

Allowed postcoordination axes

Part of: 8A03: Ataxic disorders › 08: Diseases of the nervous system