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 | ✓ |
| I23.0 | Hemopericardium as current complication following acute myocardial infarction | ✓ |
| I23.1 | Atrial septal defect 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 | ✓ |
| I23.2 | 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 | ✓ |
| I23.3 | 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 | ✓ |
| I23.4 | Rupture of chordae tendineae as current complication following acute myocardial infarction | ✓ |
| I23.5 | Rupture of papillary muscle as current complication following acute myocardial infarction | ✓ |
| I23.5 | 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 | ✓ |
| I23.6 | Thrombosis of atrium, auricular appendage, and ventricle as current complications following acute myocardial infarction | ✓ |
| I23.7 | Postinfarction angina | ✓ |
| I23.7 | Postinfarction angina | ✓ |
| I23.8 | Other current complications following acute myocardial infarction | ✓ |
| I23.8 | Other current complications following acute myocardial infarction | ✓ |
Frequently asked questions
What is ICD-10-CM code I23?
I23 is an ICD-10-CM category covering Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period). It contains 18 more specific diagnosis codes, 18 of which are billable.
Is I23 a billable code?
No — I23 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example I23.0 — Hemopericardium as current complication following acute myocardial infarction). 18 of the 18 codes under I23 are billable.
What codes fall under I23?
I23 includes I23.0, I23.0, I23.1, I23.1, I23.2, plus 13 more. See the full list with descriptions and billable status above.
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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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