Z86.4Personal history of psychoactive substance abuse
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.
- Group Z80-Z99
- influencing health potential health hazards related to family and personal history and certain conditions
- Official Vietnamese name
- Tiền sử cá nhân có lạm dụng chất hướng thần
- Additional WHO coding guidance
- Conditions classifiable to F10-F19 Excl.: current dependence (F10-F19 with common fourth character .2) problems related to use of: alcohol (Z72.1) drug
Related Z86 codes
Z86
Personal history of certain other diseases
Z86.0
Primary diagnosis candidate
Personal history of other neoplasms
Z86.1
Primary diagnosis candidate
Personal history of infectious and parasitic diseases
Z86.2
Primary diagnosis candidate
Personal history of diseases of the blood and blood- forming organs and certain disorders involving the immune mechanism
Z86.3
Primary diagnosis candidate
Personal history of endocrine, nutritional and metabolic diseases
Z86.5
Primary diagnosis candidate
Personal history of other mental and behavioural disorders
Z86.6
Primary diagnosis candidate
Personal history of diseases of the nervous system and sense organs
Z86.7
Primary diagnosis candidate
Personal history of diseases of the circulatory system
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.
