B21.9HIV disease resulting in unspecified malignant neoplasm
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 B20-B24
- Human immunodeficiency virus [HIV] disease
- Official Vietnamese name
- Bệnh do HIV gây ra u ác tính không xác định
Related B21 codes
B21
Human immunodeficiency virus [HIV] disease resulting in malignant neoplasms
B21.0
Primary diagnosis candidate
HIV disease resulting in Kaposi sarcoma
B21.1
Primary diagnosis candidate
HIV disease resulting in Burkitt lymphoma
B21.2
Primary diagnosis candidate
HIV disease resulting in other types of non- Hodgkin lymphoma
B21.3
Primary diagnosis candidate
HIV disease resulting in other malignant neoplasms of lymphoid, haematopoietic and related tissue
B21.7
Primary diagnosis candidate
HIV disease resulting in multiple malignant neoplasms
B21.8
Primary diagnosis candidate
HIV disease resulting in other malignant neoplasms
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.
