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ICD-10 diagnosis code

E51.9 Thiamine deficiency, unspecified

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E51.9 is the ICD-10 code for Thiamine deficiency, unspecified. It is a four-character subcategory of E51 (Thiamine deficiency), the most specific level in the WHO edition. It belongs to the block E50–E64 (Other nutritional deficiencies) in Chapter IV, Endocrine, nutritional and metabolic diseases.

Code type
Subcategory (4 characters)
Chapter
IV · E00–E90
Classification
WHO ICD-10, 2019 version

E51.9 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

E51.9Tiaminbrist, ospecificerad

NorwayICD-10-NO

E51.9Uspesifisert tiaminmangel

DenmarkICD-10-DK

DE519Tiaminmangel UNS

FinlandICD-10-FI

E51.9Määrittämätön tiamiininpuute

GermanyICD-10-GM

E51.9Thiaminmangel, nicht näher bezeichnet

FranceICD-10-FR

E51.9Carence en thiamine, sans précision

NetherlandsICD-10-NL

E51.9thiaminedeficiëntie, niet-gespecificeerd

United StatesICD-10-CM

E51.9Thiamine deficiency, unspecified

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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