R63.4 is the ICD-10 code for Abnormal weight loss. It is a four-character subcategory of R63 (Symptoms and signs concerning food and fluid intake), the most specific level in the WHO edition. It belongs to the block R50–R69 (General symptoms and signs) in Chapter XVIII, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
- Code type
- Subcategory (4 characters)
- Chapter
- XVIII · R00–R99
- Classification
- WHO ICD-10, 2019 version
R63.4 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
R63.4Onormal viktförlust
R63.4Unormalt vekttap
DR634Abnormt vægttab
R63.4Poikkeava painonmenetys
R63.4Abnorme Gewichtsabnahme
R63.4Perte de poids anormale
R63.4abnormaal gewichtsverlies
R63.4Abnormal weight loss
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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