I22 is the ICD-10 code for Subsequent myocardial infarction. 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 I20–I25 (Ischaemic heart diseases) in Chapter IX, Diseases of the circulatory system.
- Code type
- Category (3 characters)
- Chapter
- IX · I00–I99
- Classification
- WHO ICD-10, 2019 version
What I22 includes
Conditions and terms that are coded here.
- myocardial infarction:
- extension
- recurrent
- reinfarction
What I22 excludes
Conditions that look similar but belong under another code.
- specified as chronic or with a stated duration of more than 4 weeks (more than 28 days) from onset I25.8
Coding notes
- For morbidity coding, this category should be assigned for infarction of any myocardial site, occurring within 4 weeks (28 days) from onset of a previous infarction
Subcodes of I22
I22 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
I22Uusiva sydäninfarkti
I22Rezidivierender Myokardinfarkt
I22Infarctus du myocarde à répétition
I22recidief myocardinfarct
Listed through more specific codes:
- I22.2Subsequent non-ST elevation (NSTEMI) myocardial infarction
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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