D80.9Immunodeficiency with predominantly antibody defects, 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.
- Chapter III
- Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
- Group D80-D89
- Certain disorders involving the immune mechanism
- Official Vietnamese name
- Suy giảm miễn dịch do thiếu kháng thể là chủ yếu, không xác định
Related D80 codes
D80
Immunodeficiency with predominantly antibody defects
D80.0
Primary diagnosis candidate
Hereditary hypogammaglobuli naemia
D80.1
Primary diagnosis candidate
Nonfamilial hypogammaglobuli naemia
D80.2
Primary diagnosis candidate
Selective deficiency of immunoglobulin A [IgA]
D80.3
Primary diagnosis candidate
Selective deficiency of immunoglobulin G [IgG] subclasses
D80.4
Primary diagnosis candidate
Selective deficiency of immunoglobulin M [IgM]
D80.5
Primary diagnosis candidate
Immunodeficiency with increased immunoglobulin M [IgM]
D80.6
Primary diagnosis candidate
Antibody deficiency with near-normal immunoglobulins or with hyperimmunoglobul inaemia
D80.7
Primary diagnosis candidate
Transient hypogammaglobuli naemia of infancy
D80.8
Primary diagnosis candidate
Other immunodeficiencies with predominantly antibody defects
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.
