hereditary disease immune system disorder immunodeficiency disease OMIMPS:300755 immunodeficiency NCIT:C3131 MEDGEN:7034 immunodeficiency disorder NANDO:2100204 ICD9:279.3 Disease in which there is a deficiency or defect in the mechanisms of immunity, either cellular or humoral. UMLS:C0021051 SCTID:234532001 immuno-deficiency