279 Disorders involving the immune mechanism 
279.0 Deficiency of humoral immunity 
279.00 Hypogammaglobulinemia, unspecified convert 279.00 to ICD-10-CM 279.01 Selective IgA immunodeficiency convert 279.01 to ICD-10-CM 279.02 Selective IgM immunodeficiency convert 279.02 to ICD-10-CM 279.03 Other selective immunoglobulin deficiencies convert 279.03 to ICD-10-CM 279.04 Congenital hypogammaglobulinemia convert 279.04 to ICD-10-CM 279.05 Immunodeficiency with increased IgM convert 279.05 to ICD-10-CM 279.06 Common variable immunodeficiency convert 279.06 to ICD-10-CM
279.09 Other deficiency of humoral immunity convert 279.09 to ICD-10-CM 279.1 Deficiency of cell-mediated immunity 279.10 Immunodeficiency with predominant T-cell defect, unspecified convert 279.10 to ICD-10-CM 279.11 Digeorge's syndrome convert 279.11 to ICD-10-CM 279.12 Wiskott-aldrich syndrome convert 279.12 to ICD-10-CM 279.13 Nezelof's syndrome convert 279.13 to ICD-10-CM 279.19 Other deficiency of cell-mediated immunity convert 279.19 to ICD-10-CM 279.2 Combined immunity deficiency convert 279.2 to ICD-10-CM 279.3 Unspecified immunity deficiency convert 279.3 to ICD-10-CM 279.4 Autoimmune disease not elsewhere classified 279.41 Autoimmune lymphoproliferative syndrome convert 279.41 to ICD-10-CM 279.49 Autoimmune disease, not elsewhere classified convert 279.49 to ICD-10-CM 279.5 Graft-versus-host disease 279.50 Graft-versus-host disease, unspecified convert 279.50 to ICD-10-CM 279.51 Acute graft-versus-host disease convert 279.51 to ICD-10-CM 279.52 Chronic graft-versus-host disease convert 279.52 to ICD-10-CM 279.53 Acute on chronic graft-versus-host disease convert 279.53 to ICD-10-CM 279.8 Other specified disorders involving the immune mechanism convert 279.8 to ICD-10-CM 279.9 Unspecified disorder of immune mechanism convert 279.9 to ICD-10-CM