F23.9Acute and transient psychotic disorder, unspecified
Code usage status
Primary diagnosis
May be used as the primary diagnosis
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Complete code in the classification
Use when the diagnosis matches and no exclusion applies.
- 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, không xác định
- Additional WHO coding guidance
- Brief reactive psychosis NOS Reactive psychosis
Related F23 codes
F23
Acute and transient psychotic disorders
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
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.
