ICD-10 D51.1
Billable / SpecificVitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria
About ICD-10-CM D51.1
ICD-10-CM code D51.1 represents Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria. This is a billable/specific code in the Blood and Blood-forming Organs chapter (block D51). The 2026 edition of ICD-10-CM D51.1 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under D51.1. Per CMS ICD-10-CM Tabular 2026.
- Imerslund (Gräsbeck) syndrome
- Megaloblastic hereditary anemia
Medicare LCD Coverage for D51.1
Local Coverage Determinations (LCDs) from CMS MACs that list D51.1 as a covered diagnosis.
Showing top 10 of 26 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing D51.1.
1 Cigna
4 Medicare
1 Aetna
Convert D51.1 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| D51.1 | 2811 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To D51.1
Other codes in section D50-D53 (Nutritional anemias).
ICD-10 D51.1, Billing FAQ
Is ICD-10 code D51.1 billable? +
Yes, D51.1 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to D51.1? +
ICD-10 D51.1 includes: Imerslund (Gräsbeck) syndrome; Megaloblastic hereditary anemia.
What CPT codes are commonly billed with D51.1? +
Procedures frequently paired with D51.1 include: J3420, J3425.
What ICD-9 codes does D51.1 map to? +
Per CMS GEMs, D51.1 maps to ICD-9 codes: 2811. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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