Y49.6Psychodysleptics [hallucinogens]
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 Y40-Y84
- Complications of medical and surgical care
- Official Vietnamese name
- Tác động bất lợi của thuốc an thần [chất gây ảo giác]
Related Y49 codes
Y49
Psychotropic drugs, not elsewhere classified
Y49.0
Tricyclic and tetracyclic antidepressants
Y49.1
Monoamine- oxidase-inhibitor antidepressants
Y49.2
Other and unspecified antidepressants
Y49.3
Phenothiazine antipsychotics and neuroleptics
Y49.4
Butyrophenone and thioxanthene neuroleptics
Y49.5
Other antipsychotics and neuroleptics
Y49.7
Psychostimulants with abuse potential
Y49.8
Other psychotropic drugs, not elsewhere classified
Y49.9
Psychotropic drug, 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.
