Is E51.2 a billable ICD-10 code?

Yes. E51.2 (Wernicke's encephalopathy) is billable and can be used for insurance claims. Always verify payer-specific requirements.

E51.2 ✓ Billable

Wernicke's encephalopathy

Q: What is ICD-10 code E51.2?

ICD-10-CM code E51.2 stands for "Wernicke's encephalopathy". It is a billable code in the Endocrine, Nutritional and Metabolic Diseases chapter, effective FY2026 (Oct 1, 2025 – Sep 30, 2026).

ICD-10-CM · FY2026 · Endocrine, Nutritional and Metabolic Diseases

Code

E51.2

System

ICD-10-CM

Billable

Yes — valid for submission

Effective

FY2026

Chapter

Endocrine, Nutritional and Metabolic Diseases

Source

CMS / CDC NCHS

⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Frequently asked questions

What is ICD-10 code E51.2?

ICD-10-CM code E51.2 represents Wernicke's encephalopathy. It is a billable diagnosis code in the Endocrine, Nutritional and Metabolic Diseases chapter, effective October 1, 2025 – September 30, 2026.

Is E51.2 billable?

Yes. E51.2 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.

What chapter is E51.2 in?

E51.2 belongs to the Endocrine, Nutritional and Metabolic Diseases chapter (E00–E89) of ICD-10-CM.

Related codes in the E51 category

E51 Thiamine deficiency Non-billable E51.1 Beriberi Non-billable E51.8 Other manifestations of thiamine deficiency Billable E51.9 Thiamine deficiency, unspecified Billable E51.11 Dry beriberi Billable E51.12 Wet beriberi Billable

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