ICD-9-CM

Use additional code to identify any associated intellectual disabilities

279 Disorders involving the immune mechanism Use additional code for associated manifestations
279.0: Deficiency of humoral immunity
279.1: Deficiency of cell-mediated immunity
279.2: Combined immunity deficiency Agammaglobulinemia: autosomal recessive Swiss-type X-linked recessive Severe combined immunodeficiency [SCID] Thymic: alymphoplasia aplasia or dysplasia with immunodeficiency Excludes: thymic hypoplasia (279.11)
279.3: Unspecified immunity deficiency
279.4: Autoimmune disease, not elsewhere classified Excludes: transplant failure or rejection (996.80-996.89)
279.5: Graft-versus-host disease Code first underlying cause, such as: complication of blood transfusion (999.89) complication of transplanted organ (996.80-996.89) Use additional code to identify associated manifestations, such as: desquamative dermatitis (695.89) diarrhea (787.91) elevated bilirubin (782.4) hair loss (704.09)
279.8: Other specified disorders involving the immune mechanism Single complement [C1-C9] deficiency or dysfunction
279.9: Unspecified disorder of immune mechanism

279 Disorders involving the immune mechanism

Use additional code for associated manifestations

Agammaglobulinemia:

autosomal recessive

Swiss-type

X-linked recessive

Severe combined immunodeficiency [SCID]

Thymic:

alymphoplasia