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D84.1 - Defects in the complement system


The ICD 10 Code for Defects in the complement system is listed as D84.1.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: D84.1
Description: Defects in the complement system
  • C1 esterase inhibitor [C1-INH] deficiency
Diagnostic Related Groups
(MS-DRG v30.0)
642 - Inborn And Other Disorders Of Metabolism
Chapter Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
Block Certain disorders involving the immune mechanism (D80-D89)
Parent D84 - Other immunodeficiencies
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: 277.6 - Other deficiencies of circulating enzymes (approximate)
ICD 9 Dx Code: 279.8 - Other specified disorders involving the immune mechanism (approximate)
ICD-10-CM Siblings (same level / similar specificity) of D84.1:
D84.0 - Lymphocyte function antigen-1 [LFA-1] defect
D84.8 - Other specified immunodeficiencies
D84.9 - Immunodeficiency, unspecified