ICD-10-CM · Category

D51 — Vitamin B12 deficiency anemia

Chapter D50-D89: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism

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Sub-codes under D51

D51.0Vitamin B12 defic anemia due to intrinsic factor deficiencyD51.1Vit B12 defic anemia d/t slctv vit B12 malabsorp w proteinD51.2Transcobalamin II deficiencyD51.3Other dietary vitamin B12 deficiency anemiaD51.8Other vitamin B12 deficiency anemiasD51.9Vitamin B12 deficiency anemia, unspecified

Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗