ICD-10 D51.2
Billable / SpecificTranscobalamin II deficiency
About ICD-10-CM D51.2
ICD-10-CM code D51.2 represents Transcobalamin II deficiency. This is a billable/specific code in the Blood and Blood-forming Organs chapter (block D51). The 2026 edition of ICD-10-CM D51.2 became effective on October 1, 2025.
Medicare LCD Coverage for D51.2
Local Coverage Determinations (LCDs) from CMS MACs that list D51.2 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 D51.2.
1 Cigna
4 Medicare
1 TX Medicaid
Convert D51.2 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 |
|---|---|---|
| D51.2 | 2811 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To D51.2
Other codes in section D50-D53 (Nutritional anemias).
ICD-10 D51.2, Billing FAQ
Is ICD-10 code D51.2 billable? +
Yes, D51.2 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What CPT codes are commonly billed with D51.2? +
Procedures frequently paired with D51.2 include: J3420, J3425.
What ICD-9 codes does D51.2 map to? +
Per CMS GEMs, D51.2 maps to ICD-9 codes: 2811. Useful for legacy data review and historical claim analysis.
Get the full PayerReady toolkit
Free access to CPT/ICD-10 lookup, denial appeals, fee comparator, and claim auditing with credentialing enrollment.
Start free →Run this code through our claim audit tool
Check NCCI bundling, MUE limits, and modifier logic before submission.
Try the auditor →Did this page help?
Quick signal so we know what to improve.
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team