Is D51.9 a billable ICD-10 code?

Yes. D51.9 (Vitamin B12 deficiency anemia, unspecified) is billable and can be used for insurance claims. Always verify payer-specific requirements.

D51.9 ✓ Billable

Vitamin B12 deficiency anemia, unspecified

Q: What is ICD-10 code D51.9?

ICD-10-CM code D51.9 stands for "Vitamin B12 deficiency anemia, unspecified". It is a billable code in the Diseases of the Blood and Blood-Forming Organs chapter, effective FY2026 (Oct 1, 2025 – Sep 30, 2026).

ICD-10-CM · FY2026 · Diseases of the Blood and Blood-Forming Organs

Code

D51.9

System

ICD-10-CM

Billable

Yes — valid for submission

Effective

FY2026

Chapter

Diseases of the Blood and Blood-Forming Organs

Source

CMS / CDC NCHS

⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Frequently asked questions

What is ICD-10 code D51.9?

ICD-10-CM code D51.9 represents Vitamin B12 deficiency anemia, unspecified. It is a billable diagnosis code in the Diseases of the Blood and Blood-Forming Organs chapter, effective October 1, 2025 – September 30, 2026.

Is D51.9 billable?

Yes. D51.9 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.

What chapter is D51.9 in?

D51.9 belongs to the Diseases of the Blood and Blood-Forming Organs chapter (D50–D89) of ICD-10-CM.

Related codes in the D51 category

D51 Vitamin B12 deficiency anemia Non-billable D51.0 Vitamin B12 deficiency anemia due to intrinsic factor deficiency Billable D51.1 Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria Billable D51.2 Transcobalamin II deficiency Billable D51.3 Other dietary vitamin B12 deficiency anemia Billable D51.8 Other vitamin B12 deficiency anemias Billable

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