AutoICD API

E51

Non-billable

Thiamine deficiency

Thiamine deficiency

This is a header/category code. For billing purposes, use a more specific child code from the list below.

Status

Non-billable / Header

Block

E50-E64

Child Codes

4

ICD-11 Mapping

1 equivalent

Coding Notes

Excludes 1

Codes that cannot be used together with this code (mutual exclusion)

Excludes 2

Conditions not included here, but the patient may have both

Child Codes (4)

ICD-11 Equivalents(1)

ICD-11 Equivalents

View full mapping

Corresponding ICD-11 codes from the WHO crosswalk mapping

Also Known As / Clinical Terms(19)
Frequently Asked Questions
What is the ICD-10 code for thiamine deficiency?

The ICD-10-CM code for thiamine deficiency is E51. The full clinical description is "Thiamine deficiency". E51 is a non-billable header code. Use a more specific child code for billing purposes.

What does ICD-10 code E51 mean?

ICD-10-CM code E51 represents “Thiamine deficiency”. It is classified under Chapter 4: Endocrine, Nutritional and Metabolic Diseases and is a non-billable header code. Use a more specific child code for billing purposes.

Is E51 a billable code?

No, E51 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 4 child codes under E51.

What chapter is E51 in?

E51 is in Chapter 4: Endocrine, Nutritional and Metabolic Diseases (codes E00-E89).

What codes cannot be used with E51?

E51 has Excludes1 notes indicating codes that cannot be used together with it, including: transitory endocrine and metabolic disorders specific to newborn (P70-P74); sequelae of thiamine deficiency (E64.8).

What are the subcategories under E51?

E51 has 4 child codes, including: E51.1 (Beriberi), E51.2 (Wernicke's encephalopathy), E51.8 (Other manifestations of thiamine deficiency), E51.9 (Thiamine deficiency, unspecified).

What are the UMLS CUIs for E51?

E51 is linked to 1 UMLS Concept Unique Identifier: C0039841. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

How does E51 relate to ICF functioning codes?

ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like thiamine deficiency affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.

What is the ICD-11 equivalent of E51?

E51 maps to the ICD-11 code: 5B5A.Z (Vitamin B1 deficiency, unspecified).

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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.