The latest version of the International Classification of Diseases (ICD-11) was adopted by the 72nd World Health Assembly in 2019 and entered into force on 1 January 2022.

A very important step towards the implementation of ICD-11 in Ukraine is the training of specialists, their acquaintance with the possibilities of the new version classification and its diagnostic features. This article begins a series of works devoted to the coverage and interpretation of ICD-11 headings

The main difference between ICD-11 is the use of a dimensional approach, which has completely supplanted the categorical approach (the typological approach on which the previous ICD-10 classification was based). Instead of focusing on the diagnosis of the phenomenological structure and subtypes of the disease, dimensional classification focuses on assessing the dynamics and severity of symptoms that determine the severity of the condition and are key in the rehabilitation and recovery of the patient.

The article covers the ICD-11 section on Schizophrenia and other primary psychotic disorders. This article describes the diagnostic categories Schizophrenia (6A20), Schizoaffective Disorder (6A21), Schizotypal Disorder (6A22), Acute and Transient Psychotic Disorder (6A22), Delusional Disorder (6A24) and Symptomatic Primary Psychotic Disorder (6A25).