D84.0
✓ Billable
Lymphocyte function antigen-1 [LFA-1] defect
ICD-10-CM · FY2026 · Diseases of the Blood and Blood-Forming Organs
Code
D84.0
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Blood and Blood-Forming Organs
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code D84.0?
ICD-10-CM code D84.0 represents Lymphocyte function antigen-1 [LFA-1] defect. It is a billable diagnosis code in the Diseases of the Blood and Blood-Forming Organs chapter, effective October 1, 2025 – September 30, 2026.
Is D84.0 billable?
Yes. D84.0 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is D84.0 in?
D84.0 belongs to the Diseases of the Blood and Blood-Forming Organs chapter (D50–D89) of ICD-10-CM.
Related codes in the D84 category
D84
Other immunodeficiencies
Non-billable
D84.1
Defects in the complement system
Billable
D84.8
Other specified immunodeficiencies
Non-billable
D84.9
Immunodeficiency, unspecified
Billable
D84.81
Immunodeficiency due to conditions classified elsewhere
Billable
D84.82
Immunodeficiency due to drugs and external causes
Non-billable
D84.89
Other immunodeficiencies
Billable
D84.821
Immunodeficiency due to drugs
Billable
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