D84.9

ICD-10Billable

Immunodeficiency, unspecified

Official ICD-10-CM descriptor (FY2026)

Immunodeficiency, unspecified

D84.9 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

  • Immunocompromised NOS
  • Immunodeficient NOS
  • Immunosuppressed NOS

Related codes in D84

Where this code sits

Parent code
D84

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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