D81.8
ICD-10Non-billable categoryOther combined immunodeficiencies
Official ICD-10-CM descriptor (FY2026)
Other combined immunodeficiencies
D81.8 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
ICD-10-CM FY2026 defines 3 codes beneath D81.8. See the ICD-10-CM index for what this site publishes.
Related codes in D81
- D81.0Severe combined immunodeficiency with reticular dysgenesis
- D81.1Severe combined immunodeficiency w low T- and B-cell numbers
- D81.2Severe combined immunodef w low or normal B-cell numbers
- D81.3Adenosine deaminase [ADA] deficiencycategory
- D81.4Nezelof's syndrome
- D81.5Purine nucleoside phosphorylase [PNP] deficiency
- D81.6Major histocompatibility complex class I deficiency
- D81.7Major histocompatibility complex class II deficiency
- D81.9Combined immunodeficiency, unspecified
Where this code sits
- Parent code
- D81
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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.