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ICD-10-CM I21 — Acute myocardial infarction | Codelle

I21

ICD-10-CM

Acute myocardial infarction

Clinical Notes

Includes

cardiac infarction
coronary (artery) embolism
coronary (artery) occlusion
coronary (artery) rupture
coronary (artery) thrombosis
infarction of heart, myocardium, or ventricle
myocardial infarction specified as acute or with a stated duration of 4 weeks (28 days) or less from onset

Excludes 2 — Not included here

old myocardial infarction (I25.2)
postmyocardial infarction syndrome (I24.1)
subsequent type 1 myocardial infarction (I22.-)

Use additional code

code, if applicable, to identify:
exposure to environmental tobacco smoke (Z77.22)
history of tobacco dependence (Z87.891)
occupational exposure to environmental tobacco smoke (Z57.31)
status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82)
tobacco dependence (F17.-)
tobacco use (Z72.0)

Code Hierarchy

Subcodes (8)

I21.0ST elevation (STEMI) myocardial infarction of anterior wall

I21.1ST elevation (STEMI) myocardial infarction of inferior wall

I21.2ST elevation (STEMI) myocardial infarction of other sites

I21.3ST elevation (STEMI) myocardial infarction of unsp site

I21.4Non-ST elevation (NSTEMI) myocardial infarction

I21.9Acute myocardial infarction, unspecified

I21.AOther type of myocardial infarction

I21.BMyocardial infarction with coronary microvascular dysfnct

Same Category

I21.0ST elevation (STEMI) myocardial infarction of anterior wall I21.01STEMI involving left main coronary artery I21.02STEMI involving left anterior descending coronary artery I21.09STEMI involving oth coronary artery of anterior wall I21.1ST elevation (STEMI) myocardial infarction of inferior wall

I21.11STEMI involving right coronary artery

I21.19STEMI involving oth coronary artery of inferior wall

I21.2ST elevation (STEMI) myocardial infarction of other sites

I21.21STEMI involving left circumflex coronary artery

I21.29STEMI involving oth sites

+5 more in this category