D84.821
BillableImmunodeficiency due to drugs
D84.821 is the ICD-10-CM code for Immunodeficiency due to drugs. It is a billable, specific code valid for reimbursement.
D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
Includes
- •Immunodeficiency due to (current or past) medication
Use additional code
- •code for adverse effect if applicable, to identify adverse effect of drug (T36-T50 with fifth or six character 5)
- •code, if applicable, for associated long term (current) drug therapy drug or medication such as:
- •long term (current) drug therapy systemic steroids (Z79.52)
- •other long term (current) drug therapy (Z79.899)
Frequently asked questions
- What is ICD-10 code D84.821?
- D84.821 is the ICD-10-CM code for "Immunodeficiency due to drugs". It falls under D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism.
- Is D84.821 a billable code?
- Yes — D84.821 is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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