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I21

Acute myocardial infarction

• 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

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

I21.0

ST elevation (STEMI) myocardial infarction of anterior wall

• Type 1 ST elevation myocardial infarction of anterior wall

I21.01

ST elevation (STEMI) myocardial infarction involving left main coronary artery

I21.02

ST elevation (STEMI) myocardial infarction involving left anterior descending coronary artery

• ST elevation (STEMI) myocardial infarction involving diagonal coronary artery

I21.09

ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wall

• Acute transmural myocardial infarction of anterior wall
• Anteroapical transmural (Q wave) infarction (acute)
• Anterolateral transmural (Q wave) infarction (acute)
• Anteroseptal transmural (Q wave) infarction (acute)
• Transmural (Q wave) infarction (acute) (of) anterior (wall) NOS

I21.1

ST elevation (STEMI) myocardial infarction of inferior wall

• Type 1 ST elevation myocardial infarction of inferior wall

I21.11

ST elevation (STEMI) myocardial infarction involving right coronary artery

• Inferoposterior transmural (Q wave) infarction (acute)

I21.19

ST elevation (STEMI) myocardial infarction involving other coronary artery of inferior wall

• ST elevation (STEMI) myocardial infarction involving left circumflex coronary artery (I21.21)

• Acute transmural myocardial infarction of inferior wall
• Inferolateral transmural (Q wave) infarction (acute)
• Transmural (Q wave) infarction (acute) (of) diaphragmatic wall
• Transmural (Q wave) infarction (acute) (of) inferior (wall) NOS

I21.2

ST elevation (STEMI) myocardial infarction of other sites

• Type 1 ST elevation myocardial infarction of other sites

I21.21

ST elevation (STEMI) myocardial infarction involving left circumflex coronary artery

• ST elevation (STEMI) myocardial infarction involving oblique marginal coronary artery

I21.29

ST elevation (STEMI) myocardial infarction involving other sites

• Acute transmural myocardial infarction of other sites
• Apical-lateral transmural (Q wave) infarction (acute)
• Basal-lateral transmural (Q wave) infarction (acute)
• High lateral transmural (Q wave) infarction (acute)
• Lateral (wall) NOS transmural (Q wave) infarction (acute)
• Posterior (true) transmural (Q wave) infarction (acute)
• Posterobasal 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
• Transmural (Q wave) myocardial infarction NOS
• Type 1 ST elevation myocardial infarction of unspecified site

I21.4

Non-ST elevation (NSTEMI) myocardial infarction

• Acute subendocardial myocardial infarction
• Non-Q wave myocardial infarction NOS
• Nontransmural myocardial infarction NOS
• Type 1 non-ST elevation myocardial infarction

I21.9

Acute myocardial infarction, unspecified

• Myocardial infarction (acute) NOS

I21.A

Other type of myocardial infarction

I21.A1

Myocardial infarction type 2

• the underlying cause, if known and applicable, such as:
• anemia (D50.0-D64.9)
• chronic obstructive pulmonary disease (J44.-)
• heart failure (I50.-)
• paroxysmal tachycardia (I47.0-I47.9)
• renal failure (N17.0-N19)
• shock (R57.0-R57.9)

• Myocardial infarction due to demand ischemia
• Myocardial infarction secondary to ischemic imbalance

I21.A9

Other myocardial infarction type

• complication, if known and applicable, such as:
• (acute) stent occlusion (T82.897-)
• (acute) stent stenosis (T82.857-)
• (acute) stent thrombosis (T82.867-)
• cardiac arrest due to underlying cardiac condition (I46.2)
• complication of percutaneous coronary intervention (PCI) (I97.89)
• occlusion of coronary artery bypass graft (T82.218-)

• Myocardial infarction associated with revascularization procedure
• Myocardial infarction type 3
• Myocardial infarction type 4a
• Myocardial infarction type 4b
• Myocardial infarction type 4c
• Myocardial infarction type 5