I50.9 is the ICD-10 code for Heart failure, unspecified. It is a four-character subcategory of I50 (Heart failure), 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 I50.9 includes
Conditions and terms that are coded here.
- Cardiac, heart or myocardial failure NOS
I50.9 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
I50.9Uspesifisert hjertesvikt
DI509Hjertesvigt UNS
I50.9Tarkemmin määrittämätön sydämen vajaatoiminta
I50.9Herzinsuffizienz, nicht näher bezeichnet
I50.9Insuffisance cardiaque, sans précision
I50.9hartdecompensatie, niet-gespecificeerd
I50.9Heart failure, 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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