D84.821
D84.821: Immunodeficiency due to drugs
Billable / specific codeICD-10-CM
D84.821 is a billable, specific ICD-10-CM code for immunodeficiency due to drugs. It is valid for submission on a claim.
Check D84.821 with the rest of the claim: free scrubberUse additional code
Add a secondary code to capture the detail described below.
- 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)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Immunodeficiency due to (current or past) medication
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
D84.821 is named in 10 Medicare coverage policies: 10 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A56464Billing and Coding: Flow Cytometry
- A56638Billing and Coding: Gastrointestinal Pathogen (GIP) Panels Utilizing Multiplex Nucleic Acid Amplification Techniques (NAATs)
- A56642Billing and Coding: Gastrointestinal Pathogen (GIP) Panels Utilizing Multiplex Nucleic Acid Amplification Techniques (NAATs)
- A57044Billing and Coding: Removal of Benign Skin Lesions
Alphabetic index entries that lead here
- Immunodeficiency›due to›drugs
- Immunodeficiency›due to›medication(current or past)
Code history
Unchanged in every release from FY2024 to FY2027.