F31.4Bipolar affective disorder, current episode severe depression without psychotic symptoms
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 F30-F39
- Mood [affective] disorders
- Official Vietnamese name
- Rối loạn cảm xúc lưỡng cực, hiện tại giai đoạn trầm cảm nặng không có triệu chứng loạn thần
- Additional WHO coding guidance
- The patient is currently depressed, as in severe depressive episode without psychotic symptoms (F32.2), and has had at least one authenticated hypomanic, manic, or mixed affective episode in the past.
Related F31 codes
F31
Bipolar affective disorder
F31.0
Primary diagnosis candidate
Bipolar affective disorder, current episode hypomanic
F31.1
Primary diagnosis candidate
Bipolar affective disorder, current episode manic without psychotic symptoms
F31.2
Primary diagnosis candidate
Bipolar affective disorder, current episode manic with psychotic symptoms
F31.3
Primary diagnosis candidate
Bipolar affective disorder, current episode mild or moderate depression
F31.5
Primary diagnosis candidate
Bipolar affective disorder, current episode severe depression with psychotic symptoms
F31.6
Primary diagnosis candidate
Bipolar affective disorder, current episode mixed
F31.7
Primary diagnosis candidate
Bipolar affective disorder, currently in remission
F31.8
Primary diagnosis candidate
Other bipolar affective disorders
F31.9
Primary diagnosis candidate
Bipolar affective 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.
