D51.1 – Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria

ICD-10-CM 2027 diagnosis code · Nutritional anemias

Billable code

ICD-10-CM code D51.1

Code: D51.1 (claims format: D511)
Description: Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria
Short description: Vit B12 defic anemia d/t slctv vit B12 malabsorp w protein
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 3. Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
Block: D50-D53 Nutritional anemias
Parent codes: D51

Notes for D51.1

Applicable to:

Imerslund (Gräsbeck) syndrome
Megaloblastic hereditary anemia

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

D51 – Vitamin B12 deficiency anemia

Excludes2 (not included here):

deficiency of other B group vitamins (E53-)

Index terms for D51.1

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in D51

Frequently asked questions

What is ICD-10 code D51.1?

D51.1 is the ICD-10-CM code for vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria, in the block D50-D53 (Nutritional anemias).

Is D51.1 a billable code?

Yes. D51.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does D51.1 belong to?

It belongs to category D51 – Vitamin B12 deficiency anemia.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.