D51
Non-billableVitamin B12 deficiency anemia
D51 is the ICD-10-CM code for Vitamin B12 deficiency anemia. It is a non-billable category code — use a more specific child code such as D51.0 for billing.
- Status
- Header (non-billable)
- Chapter
- D50-D89
- Subcodes
- 6
- 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 · NIHIf you have anemia, your blood does not carry enough oxygen to the rest of your body. The most common cause of anemia is not having enough iron . Your body needs iron to make hemoglobin. Hemoglobin is an iron-rich protein that gives the red color to blood. It carries oxygen from the lungs to the rest of the body. Anemia has three main causes: blood loss, lack of red blood cell production, and high rates of red blood…
Read more about Anemia at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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