ICD-9-CM 279.04 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 279.04 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
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