D51
Header — not billableVitamin B12 deficiency anemia
The ICD-10 code for vitamin b12 deficiency anemia is D51.
D51 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 6 more specific codes below.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
- vitamin B12 deficiency (E53.8)
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under D51
- 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 codes in this category
- D50Iron deficiency anemianon-billable header
- D52Folate deficiency anemianon-billable header
- D53Other nutritional anemiasnon-billable header
- D51Vitamin B12 deficiency anemianon-billable header