I23: Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period)

Codes under I23 (Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period)). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
I23.0	Hemopericardium as current complication following acute myocardial infarction	✓
I23.1	Atrial septal defect as current complication following acute myocardial infarction	✓
I23.2	Ventricular septal defect as current complication following acute myocardial infarction	✓
I23.3	Rupture of cardiac wall without hemopericardium as current complication following acute myocardial infarction	✓
I23.4	Rupture of chordae tendineae as current complication following acute myocardial infarction	✓
I23.5	Rupture of papillary muscle as current complication following acute myocardial infarction	✓
I23.6	Thrombosis of atrium, auricular appendage, and ventricle as current complications following acute myocardial infarction	✓
I23.7	Postinfarction angina	✓
I23.8	Other current complications following acute myocardial infarction	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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