D84.0 Lymphocyte function antigen-1 [LFA-1] defect

Billable ICD-10-CM code, FY2026.

Risk adjustment (HCC)

• CMS-HCC V22: HCC 47 — Disorders of Immunity
• RxHCC V08: HCC 99 — Immune Disorders
• ESRD V24: HCC 47

MS-DRG index

Defines the logic of DRG(s) 814-816 in MDC 16.

Approximate ICD-9-CM (GEMs)

• 279.8 Other specified disorders involving the immune mechanism (approximate)

Code annotations containing back-references to D84.0

Back-references to D84.0

• Type 1 Excludes: D84.81 Immunodeficiency due to conditions classified elsewhere ("certain disorders involving the immune mechanism (D80-D83, D84.0, D84.1, D84.9)")

Back-references to D84

• Type 1 Excludes: D72 Other disorders of white blood cells ("immunity disorders (D80-D89)")

Diagnosis Index entries for D84.0

• Defect, defective › lymphocyte function antigen-1 (LFA-1)

Nearby codes

• D84 Other immunodeficiencies
• D84.0 Lymphocyte function antigen-1 [LFA-1] defect (this code)
• D84.1 Defects in the complement system
• D84.8 Other specified immunodeficiencies
• D84.81 Immunodeficiency due to conditions classified elsewhere
• D84.82 Immunodeficiency due to drugs and external causes
• D84.821 Immunodeficiency due to drugs