8A05.0

ICD-11 MMS 2026-01

Primary tics or tic disorders

Description

Primary tics or tic disorders are characterised by the presence of chronic motor and/or vocal (phonic) tics. Motor and vocal tics are defined as sudden, rapid, non-rhythmic, and recurrent movements or vocalizations, respectively. In order to be diagnosed, tics must have been present for at least one year, although they may not manifest consistently.

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

  • 8A05.00 – Tourette syndrome
  • 8A05.01 – Chronic motor tic disorder
  • 8A05.02 – Chronic phonic tic disorder
  • 8A05.03 – Transient motor tics
  • 8A05.0Y – Other specified primary tics or tic disorders
  • 8A05.0Z – Primary tics or tic disorders, unspecified

Sibling codes

  • 8A05.1 – Secondary tics or tic disorders
  • 8A05.Y – Other specified tic disorders
  • 8A05.Z – Tic disorders, unspecified

Foundation entity

Primary tics or tic disorders – http://id.who.int/icd/entity/765464219

Part of: 8A05: Tic disorders › 08: Diseases of the nervous system