Y41.5Antiviral drugs
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 kháng virus
- Additional WHO coding guidance
- Excl.: amantadine (Y46.7) cytarabine (Y43.1)
Related Y41 codes
Y41
Other systemic anti-infectives and antiparasitics
Y41.0
Sulfonamides
Y41.1
Antimycobacterial drugs
Y41.2
Antimalarials and drugs acting on other blood protozoa
Y41.3
Other antiprotozoal drugs
Y41.4
Anthelminthics
Y41.8
Other specified systemic anti- infectives and antiparasitics
Y41.9
Systemic anti- infective and antiparasitic, 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.
