8A02.1

ICD-11 MMS 2026-01

Secondary dystonia

Description

This is dystonia – a disorder of involuntary muscle contractions – of an acquired nature. Causes include substance toxicity, injury, hypoxia and tumours.

Exclusions from above levels

  • 8D21 – athetoid cerebral palsy
  • 6A06 – Stereotyped movement disorder
  • 05 – Endocrine, nutritional or metabolic diseases
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  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 19 – Certain conditions originating in the perinatal period
  • 22 – Injury, poisoning or certain other consequences of external causes

Child codes

  • 8A02.10 – Drug-induced dystonia
  • 8A02.11 – Dystonia-plus
  • 8A02.12 – Dystonia associated with heredodegenerative disorders
  • 8A02.1Y – Other specified secondary dystonia
  • 8A02.1Z – Secondary dystonia, unspecified

Sibling codes

  • 8A02.0 – Primary dystonia
  • 8A02.2 – Paroxysmal dystonia
  • 8A02.3 – Functional dystonia or spasms
  • 8A02.Y – Other specified dystonic disorders
  • 8A02.Z – Dystonic disorders, unspecified

Foundation entity

Secondary dystonia – http://id.who.int/icd/entity/209464984

Allowed postcoordination axes

Part of: 8A02: Dystonic disorders › 08: Diseases of the nervous system