D51.1

ICD-10Billable

Vit B12 defic anemia d/t slctv vit B12 malabsorp w protein

Official ICD-10-CM descriptor (FY2026)

Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria

D51.1 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

  • Imerslund (Gräsbeck) syndrome
  • Megaloblastic hereditary anemia

Related codes in D51

Where this code sits

Parent code
D51

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Source

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.

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