ICD-10 diagnosis code

E73.9 Lactose intolerance, unspecified

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E73.9 is the ICD-10 code for Lactose intolerance, unspecified. It is a four-character subcategory of E73 (Lactose intolerance), the most specific level in the WHO edition. It belongs to the block E70–E90 (Metabolic disorders) in Chapter IV, Endocrine, nutritional and metabolic diseases.

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

E73.9 in national editions

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

NorwayICD-10-NO

E73.9Uspesifisert laktoseintoleranse

DenmarkICD-10-DK

DE739Laktoseintolerans UNS

FinlandICD-10-FI

E73.9Määrittämätön laktoosi-intoleranssi

GermanyICD-10-GM

E73.9Laktoseintoleranz, nicht näher bezeichnet

FranceICD-10-FR

E73.9Intolérance au lactose, sans précision

NetherlandsICD-10-NL

E73.9lactose-intolerantie, niet-gespecificeerd

United StatesICD-10-CM

E73.9Lactose intolerance, 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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