D84.9
D84.9: Immunodeficiency, unspecified
Billable / specific codeICD-10-CM
D84.9 is a billable, specific ICD-10-CM code for immunodeficiency, unspecified. It is valid for submission on a claim.
Check D84.9 with the rest of the claim: free scrubberInclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Immunocompromised NOS
- Immunodeficient NOS
- Immunosuppressed NOS
Other codes that can never be billed with D84.9
Their own Excludes1 notes name this code, so the conflict is not listed above.
- D84.81Immunodeficiency due to conditions classified elsewhere
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
D84.9 is named in 11 Medicare coverage policies: 11 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A55717Billing and Coding: Lab: Flow Cytometry
- A56718Billing and Coding: Intravenous Immunoglobulin (IVIG)
- A57689Billing and Coding: Lab: Flow Cytometry
- A58710Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
Alphabetic index entries that lead here
- Immunocompromised NOS
- Immunodeficiency
- Immunodeficient NOS
- Immunosuppressed NOS
- Deficiency, deficient›immunity
Code history
Unchanged in every release from FY2024 to FY2027.