I42.1 is the ICD-10 code for Obstructive hypertrophic cardiomyopathy. It is a four-character subcategory of I42 (Cardiomyopathy), the most specific level in the WHO edition. It belongs to the block I30–I52 (Other forms of heart disease) in Chapter IX, Diseases of the circulatory system.
- Code type
- Subcategory (4 characters)
- Chapter
- IX · I00–I99
- Classification
- WHO ICD-10, 2019 version
What I42.1 includes
Conditions and terms that are coded here.
- Hypertrophic subaortic stenosis
I42.1 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
I42.1Hypertrofisk obstruktiv kardiomyopati
DI421Obstruktiv hypertrofisk kardiomyopati
- DI421AHypertrofisk subaortastenose
I42.1Hypertrofinen obstruktiivinen sydänlihassairaus
I42.1Hypertrophische obstruktive Kardiomyopathie
I42.1Myocardiopathie obstructive hypertrophique
I42.1obstructieve hypertrofische-cardiomyopathie
I42.1Obstructive hypertrophic cardiomyopathy
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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