D80-D89

Certain disorders involving the immune mechanism

Block coding notes

Excludes 1 never together · Excludes 2 may co-exist

Includes

defects in the complement system immunodeficiency disorders, except human immunodeficiency virus [HIV] disease sarcoidosis

Excludes 1

autoimmune disease (systemic) NOS (M35.9) functional disorders of polymorphonuclear neutrophils (D71-) human immunodeficiency virus [HIV] disease (B20)

Codes in this block

100 codes

Billableusable codeNon-billableheader / grouping codeRisk-adjusting

Official Guidelines for D80-D89

FY 2026 ›