Non-Billable / Non-Specific Code
ICD-10-CM D51 is the diagnosis code for Vitamin B12 deficiency anemia. This code falls under the section "Nutritional anemias" within Chapter 3 â Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions are not included in D51. If the patient has both, code each condition separately:
Understanding where D51 sits in the ICD-10-CM classification helps ensure proper coding:
No, D51 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
D51 is the ICD-10-CM diagnosis code for "Vitamin B12 deficiency anemia". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
D51 is located in Section D50-D53 â "Nutritional anemias" within Chapter 3 of the ICD-10-CM Tabular List.
D51 has 6 sub-code(s) that provide more specific detail: D51.0, D51.1, D51.2, D51.3, D51.8 and more.
Use D51 when the patients documented diagnosis matches "Vitamin B12 deficiency anemia" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Vitamin B12 deficiency anemia is D51.
No, D51 is non-billable. Use a more specific sub-code for primary diagnosis billing.
D51 is in Chapter 3 of the ICD-10-CM Tabular List.
Yes, D51 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.