K59.1 is the ICD-10 code for Functional diarrhoea. It is a four-character subcategory of K59 (Other functional intestinal disorders), the most specific level in the WHO edition. It belongs to the block K55–K64 (Other diseases of intestines) in Chapter XI, Diseases of the digestive system.
- Code type
- Subcategory (4 characters)
- Chapter
- XI · K00–K93
- Classification
- WHO ICD-10, 2019 version
K59.1 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
K59.1Funktionell diarré
K59.1Funksjonell diaré
DK591Funktionel diarré
K59.1Toiminnallinen ripuli
K59.1Funktionelle Diarrhoe
K59.1Diarrhée fonctionnelle
K59.1functionele diarree
K59.1Functional diarrhea
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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