X49Accidental poisoning by and exposure to other and unspecified chemicals and noxious substances
Code usage status
Primary diagnosis
Must not 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 V01-X59
- Accidents
- Official Vietnamese name
- Ngộ độc do vô tình và/hoặc phơi nhiễm với chất hóa học và/hoặc chất có hại khác và/hoặc không xác định
- Additional WHO coding guidance
- Incl.: corrosive aromatics, acids and caustic alkalis glues and adhesives metals including fumes and vapours paints and dyes plant foods and fertilizers poisoning NOS poisonous foodstuffs and poisonous plants soaps and detergents Excl.: contact with venomous animals and plants (X20-X29)
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.
