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D51Non-billableSave

D51 - Vitamin B12 deficiency anemia

ICD-10-CM Chapter 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism · D50-D53 Nutritional anemias (D50-D53) · Top-level category · FY2027

Coding Guidance

D51 is a non-billable heading. Report one of the 6 more specific codes below.

Includes, Excludes and Coding Notes

Excludes 2 — Not Included HereFrom D51

Not part of this code; report both codes when the patient has both conditions.

  • deficiency of other B group vitamins (E53-)
Excludes 2 — Not Included HereFrom Chapter D50-D89

Not part of this code; report both codes when the patient has both conditions.

  • autoimmune disease (systemic) NOS (M35.9)
  • certain conditions originating in the perinatal period (P00-P96)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • human immunodeficiency virus [HIV] disease (B20)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

More Specific Codes (6)

D51.0Vitamin B12 deficiency anemia due to intrinsic factor deficiency→D51.1Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria→D51.2Transcobalamin II deficiency→D51.3Other dietary vitamin B12 deficiency anemia→D51.8Other vitamin B12 deficiency anemias→D51.9Vitamin B12 deficiency anemia, unspecified→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with D51.