ICD-10-CM · Billable Code
D51.9 — Vitamin B12 deficiency anemia, unspecified
Chapter D50-D89: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
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Common questions about D51.9 (Vitamin B12 deficiency anemia, unspecified)
What does ICD-10 code D51.9 mean?
D51.9 is the ICD-10-CM 2025 code for Vitamin B12 deficiency anemia, unspecified. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.
Is D51.9 a billable diagnosis code?
Yes, D51.9 is a billable / specific ICD-10-CM code, meaning it can be used by clinicians and hospitals as a primary or secondary diagnosis on claims and electronic health records.
Which ICD-10 chapter does D51.9 belong to?
D51.9 belongs to the chapter "Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism" (codes D50-D89). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.
Where can I get plain-language information about Vitamin B12 deficiency anemia, unspecified?
For a plain-language explanation of Vitamin B12 deficiency anemia, unspecified, ask GoDavaii's Health AI - it explains medical conditions in 22+ Indian languages, free, with no signup. Tap "Ask GoDavaii AI about Vitamin B12 deficiency anemia, unspecified" above to get a personalised answer.
Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗