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 transmural (Q wave) infarction (acute)
 * Posterolateral transmural (Q wave) infarction (acute)
 * Posteroseptal transmural (Q wave) infarction (acute)
 * Septal transmural (Q wave) infarction (acute) NOS
 * I21.3 ST elevation (STEMI) myocardial infarction of unspecified site
 * Acute transmural myocardial infarction of unspecified site
 * Myocardial infarction (acute) NOS
 * Transmural (Q wave) myocardial infarction NOS
 * I21.4 Non-ST elevation (NSTEMI) myocardial infarction
 * Acute subendocardial myocardial infarction
 * Non-Q wave myocardial infarction NOS
 * Nontransmural myocardial infarction NOS

I22 Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction

 * Includes: acute myocardial infarction occurring within four weeks (28 days) of a previous acute myocardial infarction, regardless of site
 * cardiac infarction
 * coronary (artery) embolism
 * coronary (artery) occlusion
 * coronary (artery) rupture
 * coronary (artery) thrombosis
 * infarction of heart, myocardium, or ventricle
 * recurrent myocardial infarction
 * reinfarction of myocardium
 * rupture of heart, myocardium, or ventricle
 * note: A code from category I22 must be used in conjunction with a code from category I21. The I22 code should be sequenced first, if it the reason for encounter, or, it should be sequenced after the I21 code if the subsequent MI occurs during the encounter for the initial MI.
 * Use additional code, if applicable, to identify:
 * exposure to environmental tobacco smoke (Z77.22)
 * history of tobacco use (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)
 * Use additional code, if known, to identify:
 * body mass index (BMI) (Z68.-)
 * I22.0 Subsequent ST elevation (STEMI) myocardial infarction of anterior wall
 * Subsequent acute transmural myocardial infarction of anterior wall
 * Subsequent transmural (Q wave) infarction (acute)(of) anterior (wall) NOS
 * Subsequent