F66.0Sexual maturation disorder
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 F60-F69
- Disorders of adult personality and behaviour
- Official Vietnamese name
- Rối loạn về sự trưởng thành tình dục
- Additional WHO coding guidance
- The patient suffers from uncertainty about his or her gender identity or sexual orientation, which causes anxiety or depression. Most commonly this occurs in adolescents who are not certain whether they are homosexual, heterosexual or bisexual in orientation, or in individuals who, after a period of apparently stable sexual orientation (often within a longstanding relationship), find that their sexual orientation is changing.
Related F66 codes
F66
Psychological and behavioural disorders associated with sexual development and orientation
F66.1
Primary diagnosis candidate
Egodystonic sexual orientation
F66.2
Primary diagnosis candidate
Sexual relationship disorder
F66.8
Primary diagnosis candidate
Other psychosexual development disorders
F66.9
Primary diagnosis candidate
Psychosexual development 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.
