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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Endocrine, Nutritional And Metabolic Diseases, And Immunity Disorders 240-279 > Other Metabolic Disorders And Immunity Disorders 270-279 > Disorders Involving The Immune Mechanism 279.* > 2008 ICD-9-CM Diagnosis 279.04 Congenital hypogammaglobulinemia  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 279.04 can be accessed here. X-linked agammaglobulinemia. An immunodeficiency state characterized (usually) by profoundly low concentrations of serum immunoglobulins of all classes, although occasionally significant amounts of one or more isotypes can be found. The fundamental defect in XLA affects early lineage B cells. 279.04 is a specific code that can be used to specify a diagnosis 279.04 contains 7 index entries View the ICD-9-CM Volume 1 279.* hierarchy 279.04 also known as: Agammaglobulinemia: Bruton's type X-linked Index entries containing 279.04: Agammaglobulinemia 279.00 Bruton's X-linked 279.04 infantile sex-linked (Bruton's) (congenital) 279.04 Antibody deficiency syndrome congenital 279.04 Bruton's X-linked agammaglobulinemia 279.04 Deficiency, deficient humoral 279.00 congenital hypogammaglobulinemia 279.04 non-sex-linked 279.06 Disease, diseased - see also Syndrome Bruton's (X-linked agammaglobulinemia) 279.04 Syndrome - see also Disease antibody deficiency 279.00 congenital 279.04