D81.7Major histocompatibility complex class II deficiency
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 phức hợp kháng nguyên phù hợp tổ chức của người lớp II (MHC II)
Related D81 codes
D81
Combined immunodeficiencies
D81.0
Primary diagnosis candidate
Severe combined immunodeficiency [SCID] with reticular dysgenesis
D81.1
Primary diagnosis candidate
Severe combined immunodeficiency [SCID] with low T- and B-cell numbers
D81.2
Primary diagnosis candidate
Severe combined immunodeficiency [SCID] with low or normal B-cell numbers
D81.3
Primary diagnosis candidate
Adenosine deaminase [ADA] deficiency
D81.4
Primary diagnosis candidate
Nezelof syndrome
D81.5
Primary diagnosis candidate
Purine nucleoside phosphorylase [PNP] deficiency
D81.6
Primary diagnosis candidate
Major histocompatibility complex class I deficiency
D81.8
Primary diagnosis candidate
Other combined immunodeficiencies
D81.9
Primary diagnosis candidate
Combined immunodeficiency, 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.
