B18.09Chronic viral hepatitis B with delta-agent, other and unspecified phase
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 B15-B19
- Viral hepatitis
- Official Vietnamese name
- Bệnh viêm gan virus B mạn tính có viêm gan D [tác nhân delta], giai đoạn khác và/hoặc không xác định
Related B18 codes
B18
Chronic viral hepatitis
B18.0
Chronic viral hepatitis B with delta-agent
B18.00
Primary diagnosis candidate
Chronic viral hepatitis B with delta-agent, immune-tolerant phase
B18.1
Chronic viral hepatitis B without delta-agent
B18.10
Primary diagnosis candidate
Chronic viral hepatitis B without delta-agent, immune-tolerant phase
B18.19
Primary diagnosis candidate
Chronic viral hepatitis B without delta-agent, other and unspecified phase
B18.2
Primary diagnosis candidate
Chronic viral hepatitis C
B18.8
Primary diagnosis candidate
Other chronic viral hepatitis
B18.9
Primary diagnosis candidate
Chronic viral hepatitis, 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.
