6A20.0

ICD-11 MMS 2026-01

Schizophrenia, first episode

Description

Schizophrenia, first episode should be used to identify individuals experiencing symptoms that meet the diagnostic requirements for Schizophrenia (including duration) but who have never before experienced an episode during which diagnostic requirements for Schizophrenia were met.

Exclusions from above levels

  • 6A22 – Schizotypal disorder
  • 6A23 – Acute and transient psychotic disorder
  • QE62 – Uncomplicated bereavement
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  • QE84 – Acute stress reaction

Child codes

  • 6A20.00 – Schizophrenia, first episode, currently symptomatic
  • 6A20.01 – Schizophrenia, first episode, in partial remission
  • 6A20.02 – Schizophrenia, first episode, in full remission
  • 6A20.0Z – Schizophrenia, first episode, unspecified

Sibling codes

  • 6A20.1 – Schizophrenia, multiple episodes
  • 6A20.2 – Schizophrenia, continuous
  • 6A20.Y – Other specified episode of schizophrenia
  • 6A20.Z – Schizophrenia, episode unspecified

Foundation entity

Schizophrenia, first episode – http://id.who.int/icd/entity/625636921

Allowed postcoordination axes

Part of: 6A20: Schizophrenia › 06: Mental, behavioural or neurodevelopmental disorders