Y42.1 is the ICD-10 code for Thyroid hormones and substitutes. It is a four-character subcategory of Y42 (Hormones and their synthetic substitutes and antagonists, not elsewhere classified), the most specific level in the WHO edition. It belongs to the block Y40–Y59 (Drugs, medicaments and biological substances causing adverse effects in therapeutic use) in Chapter XX, External causes of morbidity and mortality.
- Code type
- Subcategory (4 characters)
- Chapter
- XX · V01–Y98
- Classification
- WHO ICD-10, 2019 version
Y42.1 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
Y42.1Hormones thyroïdiennes et leurs dérivés
Y42.1schildklierhormonen en substituten
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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