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Non-billableImmunodeficiency with predominantly antibody defects
D80 is the ICD-10-CM code for Immunodeficiency with predominantly antibody defects. It is a non-billable category code — use a more specific child code such as D80.0 for billing.
- Status
- Header (non-billable)
- Chapter
- D50-D89
- Subcodes
- 10
- Edition
- FY2026
D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
What this means — in plain language
MedlinePlus · NIHWhat is the immune system? Your immune system is a complex network of cells, tissues, and organs. Together they help the body fight infections and other diseases. When germs such as bacteria or viruses invade your body, they attack and multiply. This is called an infection. The infection causes the disease that makes you sick. Your immune system protects you from the disease by fighting off the germs. What are the…
Read more about Immune System and Disorders at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
19 rare diseases filed under this code
Orphanet · INSERMICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. This code is shared — showing 12 of 19.
Orphadata Science: Free access data from Orphanet. © INSERM 1999. 3 of these are exact ICD-10 matches; the rest are broader-bucket mappings.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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