E51
Non-billableThiamine deficiency
E51 is the ICD-10-CM code for Thiamine deficiency. It is a non-billable category code — use a more specific child code such as E51.1 for billing.
- Status
- Header (non-billable)
- Chapter
- E00-E89
- Subcodes
- 4
- Edition
- FY2026
E00-E89 Endocrine, nutritional and metabolic diseases
Excludes1 — not coded here
- •sequelae of thiamine deficiency (E64.8)
Frequently asked questions
- What is ICD-10 code E51?
- E51 is the ICD-10-CM code for "Thiamine deficiency". It falls under E00-E89 Endocrine, nutritional and metabolic diseases.
- Is E51 a billable code?
- No — E51 is a non-billable header code. Use a more specific child code (such as E51.1) for billing.
- What is excluded from E51?
- Excludes1 (not coded here): sequelae of thiamine deficiency (E64.8).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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