I23 – Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period)
ICD-10-CM 2027 diagnosis code · Ischemic heart diseases
ICD-10-CM code
I23
- Code
I23(claims format:I23)- Description
- Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period)
- Short description
- Certain crnt comp fol STEMI & NSTEMI mocard infrc <= 28 day
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 9. Diseases of the circulatory system (I00-I99)
- Block
- I20-I25 Ischemic heart diseases
Billable codes under I23
I23 is a header code and cannot be used on claims. Choose the most specific code:
- I23.0 – Hemopericardium as current complication following acute myocardial infarctionBillable
- I23.1 – Atrial septal defect as current complication following acute myocardial infarctionBillable
- I23.2 – Ventricular septal defect as current complication following acute myocardial infarctionBillable
- I23.3 – Rupture of cardiac wall without hemopericardium as current complication following acute myocardial infarctionBillable
- I23.4 – Rupture of chordae tendineae as current complication following acute myocardial infarctionBillable
- I23.5 – Rupture of papillary muscle as current complication following acute myocardial infarctionBillable
- I23.6 – Thrombosis of atrium, auricular appendage, and ventricle as current complications following acute myocardial infarctionBillable
- I23.7 – Postinfarction anginaBillable
- I23.8 – Other current complications following acute myocardial infarctionBillable
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block I20-I25
Frequently asked questions
What is ICD-10 code I23?
I23 is the ICD-10-CM code for certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period), in the block I20-I25 (Ischemic heart diseases).
Is I23 a billable code?
No. I23 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.