I23
⚠ Non-billable
Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period)
ICD-10-CM · FY2026 · Diseases of the Circulatory System
Code
I23
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Circulatory System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code I23?
ICD-10-CM code I23 represents Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period). It is a non-billable header code requiring a more specific subcategory in the Diseases of the Circulatory System chapter, effective October 1, 2025 – September 30, 2026.
Is I23 billable?
No. I23 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is I23 in?
I23 belongs to the Diseases of the Circulatory System chapter (I00–I99) of ICD-10-CM.
Related codes in the I23 category
I23.0
Hemopericardium as current complication following acute myocardial infarction
Billable
I23.1
Atrial septal defect as current complication following acute myocardial infarction
Billable
I23.2
Ventricular septal defect as current complication following acute myocardial infarction
Billable
I23.3
Rupture of cardiac wall without hemopericardium as current complication following acute myocardial infarction
Billable
I23.4
Rupture of chordae tendineae as current complication following acute myocardial infarction
Billable
I23.5
Rupture of papillary muscle as current complication following acute myocardial infarction
Billable
I23.6
Thrombosis of atrium, auricular appendage, and ventricle as current complications following acute myocardial infarction
Billable
I23.7
Postinfarction angina
Billable
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