What is the ICD-10 code for cobalamin deficiency?

The ICD-10 code for cobalamin deficiency is primarily D51.0, which is used for vitamin B12 deficiency anemia due to intrinsic factor deficiency.

How do you code vitamin B12 deficiency?

Vitamin B12 deficiency is coded using D51.0 for intrinsic factor deficiency, D51.1 for selective malabsorption with proteinuria, and D51.8 for other specified causes.

ICD-10 Coding for Cobalamin Deficiency(D51.0, D51.1, D51.8)

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Learn about ICD-10 coding for cobalamin deficiency, including pernicious anemia and other vitamin B12 deficiency types. Find documentation requirements and coding tips.

Also known as:

Vitamin B12 DeficiencyPernicious Anemia

Related ICD-10 Code Ranges

Complete code families applicable to Cobalamin Deficiency

D50-D89Primary Range

Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

Code	Description	When to Use	Key Documentation
D51.0	Vitamin B12 deficiency anemia due to intrinsic factor deficiency	Use when pernicious anemia is confirmed with intrinsic factor deficiency.	Autoimmune destruction of gastric parietal cells Positive intrinsic factor antibody Serum B12 <200 pg/mL + 1 more
D51.1	Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria	Use for pediatric cases with selective B12 malabsorption and renal involvement.	Proteinuria >300 mg/day Genetic confirmation of cubilin/amnioless defects Serum B12 <150 pg/mL
D51.8	Other vitamin B12 deficiency anemia	Use for B12 deficiencies due to non-autoimmune malabsorption.	Documented malabsorption risk (e.g. gastrectomy chronic PPI use) Serum B12 <200 pg/mL
D51.9	Vitamin B12 deficiency anemia, unspecified	Use when the specific cause of B12 deficiency is not determined.	Low serum B12 without confirmed etiology

Primary ICD-10-CM Codes

Vitamin B12 deficiency anemia due to intrinsic factor deficiency

D51.0Billable

Documentation & Coding Risks

Avoid these common issues when documenting Cobalamin Deficiency.

Failure to document specific etiology of B12 deficiency

Impact

Clinical: Leads to inappropriate treatment plans., Regulatory: Non-compliance with coding standards., Financial: Potential for denied claims.

Mitigation

Ensure thorough documentation of lab results and clinical findings., Use templates to guide documentation.

Using D51.9 when a specific etiology is known

Impact

Reimbursement: May result in denied claims or lower reimbursement., Compliance: Non-compliance with coding guidelines., Data Quality: Decreases accuracy of medical records.

Mitigation

Ensure documentation specifies the cause of B12 deficiency.

Use of unspecified codes

Impact

High risk of audit if D51.9 is used without proper justification.

Mitigation

Ensure specific etiology is documented and coded appropriately.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with D51.0.

Primary Code

D51.0

Vitamin B12 deficiency anemia due to intrinsic factor deficiency

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ICD-10 codes5

Coding risks3

FAQs2

ICD-10 Coding for Cobalamin Deficiency(D51.0, D51.1, D51.8)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for cobalamin deficiency?

How do you code vitamin B12 deficiency?

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