F23Acute and transient psychotic disorders
Code usage status
Primary diagnosis
Select a more specific code
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Do not use F23 directly
Use the most specific code supported by the record.
- Chapter V
- Mental and behavioural disorders
- Group F20-F29
- Schizophrenia, schizotypal and delusional disorders
- Official Vietnamese name
- Loạn thần cấp tính và/hoặc ngắn hạn
- Additional WHO coding guidance
- A heterogeneous group of disorders characterized by the acute onset of psychotic symptoms such as delusions, hallucinations, and perceptual disturbances, and by the severe disruption of ordinary behaviour. Acute onset is defined as a crescendo development of a clearly abnormal clinical picture in about two weeks or less. For these disorders there is no evidence of organic causation. Perplexity and puzzlement are often present but disorientation for time, place and person is not persistent or severe enough to justify a diagnosis of organically caused delirium (F05.-). Complete recovery usually occurs within a few months, often within a few weeks or even days. If the
Related F23 codes
F23.0
Primary diagnosis candidate
Acute polymorphic psychotic disorder without symptoms of schizophrenia
F23.1
Primary diagnosis candidate
Acute polymorphic psychotic disorder with symptoms of schizophrenia
F23.2
Primary diagnosis candidate
Acute schizophrenia-like psychotic disorder
F23.3
Primary diagnosis candidate
Other acute predominantly delusional psychotic disorders
F23.8
Primary diagnosis candidate
Other acute and transient psychotic disorders
F23.9
Primary diagnosis candidate
Acute and transient psychotic disorder, unspecified
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
