ICD-10-CM · Chapter 3 · D50–D89
D84.821
Immunodeficiency due to drugs
Diseases of the blood and immune mechanism
Quick facts
- Code
- D84.821
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 3 — Diseases of the blood and immune mechanism
- Category
- D84 — Other immunodeficiencies
- Specificity
- 6 characters
How coders use this code
ICD-10-CM D84.821 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of immunodeficiency due to drugs. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in D84
- D84Other immunodeficiencies
- D84.0Lymphocyte function antigen-1 [LFA-1] defect
- D84.1Defects in the complement system
- D84.8Other specified immunodeficiencies
- D84.81Immunodeficiency due to conditions classified elsewhere
- D84.82Immunodeficiency due to drugs and external causes
- D84.822Immunodeficiency due to external causes
- D84.89Other immunodeficiencies
- D84.9Immunodeficiency, unspecified
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