D51 ICD-10-CA category: Vitamin B12 deficiency anaemia
D51 isn’t a code on its own. Choose one of the 6 codes beneath it, the one the documentation supports.
Official description
D51Vitamin B12 deficiency anaemia
ICD-10-CA · Canada
Codes in D51
D51 isn’t a code on its own. Open the code that matches what the note documents.
D51.0Vitamin B12 deficiency anaemia due to intrinsic factor deficiencyD51.1Vitamin B12 deficiency anaemia due to selective vitamin B12 malabsorption with proteinuriaD51.2Transcobalamin II deficiencyD51.3Other dietary vitamin B12 deficiency anaemiaD51.8Other vitamin B12 deficiency anaemiasD51.9Vitamin B12 deficiency anaemia, unspecifiedNotes for D51
As CIHI prints them, with any note D51 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Vitamin B deficiency (E53.8)12
- Autoimmune disease (systemic) NOS (M35.9)certain conditions originating in the perinatal period (P00-P96)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)human immunodeficiency virus [HIV] disease (B24)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
Where D51 sits
- 1ChapterChapter 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
- 2Block D50-D53Nutritional anaemias
- 3Category D51Vitamin B12 deficiency anaemia
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
Is D51 a valid ICD-10-CA code?
No. D51 (Vitamin B12 deficiency anaemia) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 6 codes; record the one the documentation supports.
Where is D51 in ICD-10-CA?
D51 sits under D50-D53 Nutritional anaemias, within Chapter 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89).
What coding notes apply to D51?
ICD-10-CA lists Excludes notes for D51, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.