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    v1.0.28
    OpenPayerBilling CodesOther nutritional deficienciesICD-10-CM e51-thiamine-deficiency
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    ICD-10-CM Code For Thiamine Deficiency: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group E51 includes disorders caused by thiamine deficiency, such as beriberi and Wernicke-related conditions, and covers neurologic and cardiovascular manifestations of insufficient vitamin B1. These ICD-10-CM diagnosis codes are used to document clinical scenarios where thiamine deficiency is identified, capturing severity, neurologic involvement, or cardiovascular complications relevant to this group. Accurate coding within the ICD-10-CM E51 group supports proper claim adjudication and appropriate reimbursement.

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    ICD-10-CM E51: Thiamine Deficiency Overview

    The ICD-10-CM E51 code group covers disorders due to insufficient thiamine (vitamin B1), including beriberi and associated neurologic and cardiovascular manifestations. These diagnoses affect metabolic and neurologic systems and can lead to significant morbidity if untreated. Accurate coding is important to reflect clinical complexity and to support proper reimbursement for nutrition-related care.

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    When to Use

    Assign a code from this group when clinical documentation identifies thiamine deficiency or a diagnosis directly attributed to insufficient vitamin B1. Use these codes to report cases with documented neurologic signs, cardiovascular compromise, or laboratory-confirmed thiamine deficiency.

    ICD-10-CM Codes

    5 rows

    ICD-10-CM CodeDescription
    E51.11Dry beriberi
    E51.12Wet beriberi
    E51.2Wernicke's encephalopathy
    E51.8Other manifestations of thiamine deficiency
    E51.9Thiamine deficiency, unspecified

    DRG Codes

    2 rows

    DRG CodeDescription
    640Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCC
    641Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes without MCC

    Related Codes

    E50-VITAMIN-A-DEFICIENCY

    ICD-10-CM Code For Vitamin A Deficiency: Group Overview

    E52-NIACIN-DEFICIENCY-PELLAGRA

    ICD-10-CM Code For Niacin Deficiency [Pellagra]: Group Overview

    E53-DEFICIENCY-OF-OTHER-B-GROUP-VITAMINS

    ICD-10-CM Code For Deficiency Of Other B Group Vitamins: Group Overview

    E54-ASCORBIC-ACID-DEFICIENCY

    ICD-10-CM Code For Ascorbic Acid Deficiency: Group Overview

    E55-VITAMIN-D-DEFICIENCY

    ICD-10-CM Code For Vitamin D Deficiency: Group Overview

    E56-OTHER-VITAMIN-DEFICIENCIES

    ICD-10-CM Code For Other Vitamin Deficiencies: Group Overview

    E58-DIETARY-CALCIUM-DEFICIENCY

    ICD-10-CM Code For Dietary Calcium Deficiency: Group Overview

    E59-DIETARY-SELENIUM-DEFICIENCY

    ICD-10-CM Code For Dietary Selenium Deficiency: Group Overview

    E60-DIETARY-ZINC-DEFICIENCY

    ICD-10-CM Code For Dietary Zinc Deficiency: Group Overview

    E61-DEFICIENCY-OF-OTHER-NUTRIENT-ELEMENTS

    ICD-10-CM Code For Deficiency Of Other Nutrient Elements: Group Overview

    Showing 1–10 of 12

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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