B30.9Viral conjunctivitis, unspecified
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 B25-B34
- Other viral diseases
- Official Vietnamese name
- Bệnh viêm kết mạc do virus, không xác định
Related B30 codes
B30
Viral conjunctivitis
B30.0
Primary diagnosis candidate
Keratoconjunctivitis due to adenovirus (H19.2*)
B30.1
Primary diagnosis candidate
Conjunctivitis due to adenovirus (H13.1*)
B30.2
Primary diagnosis candidate
Viral pharyngoconjunctiv itis
B30.3
Primary diagnosis candidate
Acute epidemic haemorrhagic conjunctivitis (enteroviral) (H13.1*)
B30.8
Primary diagnosis candidate
Other viral conjunctivitis (H13.1*)
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.
