Differences – Acute and transient psychotic disorders

For ICD-11, ICD-10 ATPD with its subcategories has been reduced to F23.0. Acute polymorphic psychotic disorder without symptoms of schizophrenia, representing sudden onset of highly variable/fluctuating psychotic symptoms of brief duration (< 3 months), negative symptoms not being present, not including typical schizophrenia of insufficient duration; F23.1 and F23.2 are referred to ICD-11 “Other specified acute and transient psychotic disorder”.