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4A01.0 Immunodeficiencies with predominantly antibody defects

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

A disorder characterised by an inability to mount a normal immune response due to antibody (i.e. immunoglobulin) defects

sections/codes in this section (4A01.0-4A01.0)

• Hereditary agammaglobulinaemia with profoundly reduced or absent B cells  (4A01.00)
• Immunodeficiencies with severe reduction in at least two serum immunoglobulin isotypes with normal or low numbers of B cells  (4A01.01)
• Specific antibody deficiency with normal immunoglobulin concentrations or normal number of B cells  (4A01.02)
• Transient hypogammaglobulinaemia of infancy  (4A01.03)
• Immunodeficiencies with isotype or light chain deficiencies with normal number of B cells  (4A01.04)
• Immunodeficiencies with severe reduction in serum IgG or IgA with normal or elevated IgM and normal numbers of B-cells  (4A01.05)
• Other specified immunodeficiencies with predominantly antibody defects  (4A01.0Y)
• Immunodeficiencies with predominantly antibody defects, unspecified  (4A01.0Z)

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