ICD-10 diagnosis code

I40 Acute myocarditis

I40 is the ICD-10 code for Acute myocarditis. It is a three-character category divided into 4 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block I30–I52 (Other forms of heart disease) in Chapter IX, Diseases of the circulatory system.

Code type: Category (3 characters)
Chapter: IX · I00–I99
Classification: WHO ICD-10, 2019 version

Subcodes of I40

I40 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

I40Akut myokardit

DenmarkICD-10-DK

DI40Akut myokarditis

FinlandICD-10-FI

I40Akuutti sydänlihastulehdus

GermanyICD-10-GM

I40Akute Myokarditis

FranceICD-10-FR

I40Myocardite aiguë

NetherlandsICD-10-NL

I40acute myocarditis

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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