D84.821
Billable codeImmunodeficiency due to drugs
The ICD-10 code for immunodeficiency due to drugs is D84.821.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Immunodeficiency due to (current or past) medication
Use additional code
This code represents an underlying condition. When a related manifestation is also present, coding convention calls for an additional code to be listed after this one.
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Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •If the associated manifestation or related condition noted above is also documented, an additional code should be reported alongside this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- D84.822Immunodeficiency due to external causes
- D84.821Immunodeficiency due to drugs
Associated MS-DRGs
D84.821 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.