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I21.9 Acute myocardial infarction, unspecified
BackI21Acute myocardial infarctionCategory8 →I21.0ST elevation (STEMI) myocardial infarction of anterior wallCategory3 →I21.01ST elevation (STEMI) myocardial infarction involving left main coronary arteryCategoryI21.02ST elevation (STEMI) myocardial infarction involving left anterior descending coronary arteryCategoryI21.09ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wallCategoryI21.1ST elevation (STEMI) myocardial infarction of inferior wallCategory2 →I21.11ST elevation (STEMI) myocardial infarction involving right coronary arteryCategoryI21.19ST elevation (STEMI) myocardial infarction involving other coronary artery of inferior wallCategoryI21.2ST elevation (STEMI) myocardial infarction of other sitesCategory2 →I21.21ST elevation (STEMI) myocardial infarction involving left circumflex coronary arteryCategoryI21.29ST elevation (STEMI) myocardial infarction involving other sitesCategoryI21.3ST elevation (STEMI) myocardial infarction of unspecified siteCategoryI21.4Non-ST elevation (NSTEMI) myocardial infarctionCategoryI21.9Acute myocardial infarction, unspecifiedCategoryI21.AOther type of myocardial infarctionCategory2 →I21.A1Myocardial infarction type 2CategoryI21.A9Other myocardial infarction typeCategoryI21.BMyocardial infarction with coronary microvascular dysfunctionCategory
CategoryCODABLE
I21.9
Acute myocardial infarction, unspecified
EXAMPLES
Myocardial infarction (acute) NOS
- Chapter
- IX · Diseases of the circulatory system
- Section
- I20-I25
- Valid from
Source
CMS ICD-10-CM Tabular List, edition FY2026.