F73Profound mental retardation
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 F73 directly
Use the most specific code supported by the record.
- Chapter V
- Mental and behavioural disorders
- Group F70-F79
- Mental retardation
- Official Vietnamese name
- Chậm phát triển trí tuệ trầm trọng
- Additional WHO coding guidance
- [See before F70 for subdivisions] IQ under 20 (in adults, mental age below 3 years). Results in severe limitation in self-care, continence, communication and mobility. Incl.: profound mental subnormality
Related F73 codes
F73.0
Primary diagnosis candidate
Profound mental retardation, with the statement of no, or minimal, impairment of behaviour
F73.1
Primary diagnosis candidate
Profound mental retardation, significant impairment of behaviour requiring attention or treatment
F73.8
Primary diagnosis candidate
Profound mental retardation, other impairments of behaviour
F73.9
Primary diagnosis candidate
Profound mental retardation, without mention of impairment of behaviour
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.
