6A22

ICD-11 MMS 2026-01

Schizotypal disorder

Description

Schizotypal disorder is characterised by an enduring pattern (i.e. characteristic of the person’s functioning over a period of at least several years) of eccentricities in behaviour, appearance and speech, accompanied by cognitive and perceptual distortions, unusual beliefs, and discomfort with— and often reduced capacity for— interpersonal relationships. Symptoms may include constricted or inappropriate affect and anhedonia. Paranoid ideas, ideas of reference, or other psychotic symptoms, including hallucinations in any modality, may occur, but are not of sufficient intensity or duration to meet the diagnostic requirements of schizophrenia, schizoaffective disorder, or delusional disorder. The symptoms cause distress or impairment in personal, family, social, educational, occupational or other important areas of functioning.

Index terms

  • Schizotypal disorder
  • Schizotypal personality disorder
  • borderline schizophrenia
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  • latent schizophrenia
  • latent schizophrenia, unspecified state
  • prepsychotic schizophrenia
  • prodromal schizophrenia
  • pseudoneurotic schizophrenia
  • pseudopsychopathic schizophrenia

Inclusions

  • Schizotypal personality disorder

Excludes

  • 6A02 – Autism spectrum disorder
  • 6D10 – Personality disorder

Exclusions from above levels

  • QE62 – Uncomplicated bereavement
  • QE84 – Acute stress reaction

Sibling codes

  • 6A20 – Schizophrenia
  • 6A21 – Schizoaffective disorder
  • 6A23 – Acute and transient psychotic disorder
  • 6A24 – Delusional disorder
  • 6A25 – Symptomatic manifestations of primary psychotic disorders
  • 6A2Y – Other specified primary psychotic disorder
  • 6A2Z – Schizophrenia or other primary psychotic disorders, unspecified

Foundation entity

Schizotypal disorder – http://id.who.int/icd/entity/18178000

Allowed postcoordination axes

Part of: 06: Mental, behavioural or neurodevelopmental disorders