Other immunodeficiencies (D84) ICD-10-CM
The D84 code range covers other immunodeficiencies with 10 ICD-10-CM diagnosis codes. 7 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Codes in the D84 Range 10 codes · 7 billable
- D84 Other immunodeficienciesNon-billable
- D84.0 Lymphocyte function antigen-1 [LFA-1] defect
- D84.1 Defects in the complement system
- D84.8 Other specified immunodeficienciesNon-billable
- D84.81 Immunodeficiency due to conditions classified elsewhere
- D84.82 Immunodeficiency due to drugs and external causesNon-billable
- D84.821 Immunodeficiency due to drugs
- D84.822 Immunodeficiency due to external causes
- D84.89 Other immunodeficiencies
- D84.9 Immunodeficiency, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the D84 range.
Immunodeficiency Syndrome
Syndromes in which there is a deficiency or defect in the mechanisms of immunity, either cellular or humoral.
About the D84 Code Range
These immune system disorders include specific defects and immunodeficiencies linked to other conditions, drugs, or external causes.
D84.0 identifies an LFA-1 defect, while D84.1 identifies defects in the complement system. D84.8 groups other specified immunodeficiencies. Its subdivisions distinguish immunodeficiency due to conditions classified elsewhere, drugs, and external causes. D84.9 identifies an unspecified immunodeficiency.
Questions About This Page
How many billable codes are in the D84 range?
Of the 10 codes in this range, 7 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the D84 range classify?
The range classifies other immunodeficiencies. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
