F20.1Hebephrenic schizophrenia
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
- Tâm thần phân liệt thể thanh xuân
- Additional WHO coding guidance
- A form of schizophrenia in which affective changes are prominent, delusions and hallucinations fleeting and fragmentary, behaviour irresponsible and unpredictable, and mannerisms common. The mood is shallow and inappropriate, thought is disorganized, and speech is incoherent. There is a tendency to social isolation. Usually the prognosis is poor because of the rapid development of "negative" symptoms, particularly flattening of affect and loss of volition. Hebephrenia should normally be diagnosed only in adolescents or young adults. Disorganized schizophrenia Hebephrenia
Related F20 codes
F20
Schizophrenia
F20.0
Primary diagnosis candidate
Paranoid schizophrenia
F20.2
Primary diagnosis candidate
Catatonic schizophrenia
F20.3
Primary diagnosis candidate
Undifferentiated schizophrenia
F20.4
Primary diagnosis candidate
Post-schizophrenic depression
F20.5
Primary diagnosis candidate
Residual schizophrenia
F20.6
Primary diagnosis candidate
Simple schizophrenia
F20.8
Primary diagnosis candidate
Other schizophrenia Cenesthopathic
F20.9
Primary diagnosis candidate
Schizophrenia, 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.
