D51 ICD-10-CM Code: Vitamin B12 deficiency anemia
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
D51Vitamin B12 deficiency anemia
ICD-10-CM diagnosis code · United States clinical modification
Where D51 sits
- 1
Chapter 3
Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
- 2
Section
Nutritional anemias (D50-D53)
- 3
Category D51
Vitamin B12 deficiency anemia
- 4
Code D51
Vitamin B12 deficiency anemia
Codes under D51
D51 is a non-billable category. Choose the child code that best matches the documented diagnosis.
D51.0Vitamin B12 deficiency anemia due to intrinsic factor deficiencyD51.1Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuriaD51.2Transcobalamin II deficiencyD51.3Other dietary vitamin B12 deficiency anemiaD51.8Other vitamin B12 deficiency anemiasD51.9Vitamin B12 deficiency anemia, unspecifiedNotes for this code
Inclusion terms
No inclusion terms are listed for D51.
Code first
No “code first” instruction is listed for D51.
Use additional code
No “use additional code” instruction is listed for D51.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for D51.
Excludes2
Conditions not included here that may be reported separately when present.
- deficiency of other B group vitamins (E53-)
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code D51 mean?
D51 is the FY 2027 U.S. ICD-10-CM code for “Vitamin B12 deficiency anemia.”
Is D51 a billable or specific ICD-10-CM code?
No. D51 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is D51 located in ICD-10-CM?
D51 is listed in Chapter 3, Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89), within Nutritional anemias (D50-D53) (D50–D53), under category D51, Vitamin B12 deficiency anemia.
What coding notes are listed for D51?
No inclusion terms are listed for D51 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. Excludes2 notes: deficiency of other B group vitamins (E53-).