TheCardiovascular
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I21.A1 Myocardial infarction type 2

BackI21Acute myocardial infarction8 →I21.0ST elevation (STEMI) myocardial infarction of anterior wall3 →I21.01ST elevation (STEMI) myocardial infarction involving left main coronary arteryI21.02ST elevation (STEMI) myocardial infarction involving left anterior descending coronary arteryI21.09ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wallI21.1ST elevation (STEMI) myocardial infarction of inferior wall2 →I21.11ST elevation (STEMI) myocardial infarction involving right coronary arteryI21.19ST elevation (STEMI) myocardial infarction involving other coronary artery of inferior wallI21.2ST elevation (STEMI) myocardial infarction of other sites2 →I21.21ST elevation (STEMI) myocardial infarction involving left circumflex coronary arteryI21.29ST elevation (STEMI) myocardial infarction involving other sitesI21.3ST elevation (STEMI) myocardial infarction of unspecified siteI21.4Non-ST elevation (NSTEMI) myocardial infarctionI21.9Acute myocardial infarction, unspecifiedI21.AOther type of myocardial infarction2 →I21.A1Myocardial infarction type 2I21.A9Other myocardial infarction typeI21.BMyocardial infarction with coronary microvascular dysfunction
CategoryCODABLE
I21.A1
Myocardial infarction type 2
EXAMPLES
Myocardial infarction due to demand ischemia
Myocardial infarction secondary to ischemic imbalance
CODING RULE
Code first: , if applicable, the underlying cause, such as:
anemia (D50.0-D64.9)
chronic obstructive pulmonary disease (J44.-)
paroxysmal tachycardia (I47.0-I47.9)
shock (R57.0-R57.9)
Chapter
IX · Diseases of the circulatory system
Section
I20-I25
Valid from
Source

CMS ICD-10-CM Tabular List, edition FY2026.

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