4A00.1
category
Defects in the complement system
Exclusions
8 subordinate codes
4A00.10Immunodeficiency with an early component of complement deficiency4A00.11Immunodeficiency with a late component of complement deficiency4A00.12Immunodeficiency with factor B deficiency4A00.13Immunodeficiency with factor D anomaly4A00.14Hereditary angioedema4A00.15Acquired angioedema4B4YOther specified diseases of the immune system4B4ZDiseases of the immune system, unspecified