All ICD10 Codes

I23

Non-Billable
ChapterI00–I99
Rankcategory
Official Description

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

Use a more specific code (9 billable)
I23.0Hemopericardium as current complication following acute myocardial infarctionI23.1Atrial septal defect as current complication following acute myocardial infarctionI23.2Ventricular septal defect as current complication following acute myocardial infarctionI23.3Rupture of cardiac wall without hemopericardium as current complication following acute myocardial infarctionI23.4Rupture of chordae tendineae as current complication following acute myocardial infarctionI23.5Rupture of papillary muscle as current complication following acute myocardial infarctionI23.6Thrombosis of atrium, auricular appendage, and ventricle as current complications following acute myocardial infarctionI23.7Postinfarction anginaI23.8Other current complications following acute myocardial infarction
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 9: Diseases of the Circulatory System (I00-I99).

CH9 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

I20-I25 Parent Instructions

Code Also
  • the presence of hypertension (I10-I1A)

Clinical Hierarchy

BillableHas subcodes
CH9Diseases of the circulatory system (I00-I99)
I20-I25Ischemic heart diseases (I20-I25)
I23Certain current complications following ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction (within the 28 day period)Not billable
I23.0Hemopericardium as current complication following acute myocardial infarctionBillable
I23.1Atrial septal defect as current complication following acute myocardial infarctionBillable
I23.2Ventricular septal defect as current complication following acute myocardial infarctionBillable
I23.3Rupture of cardiac wall without hemopericardium as current complication following acute myocardial infarctionBillable
I23.4Rupture of chordae tendineae as current complication following acute myocardial infarctionBillable
I23.5Rupture of papillary muscle as current complication following acute myocardial infarctionBillable
I23.6Thrombosis of atrium, auricular appendage, and ventricle as current complications following acute myocardial infarctionBillable
I23.7Postinfarction anginaBillable
I23.8Other current complications following acute myocardial infarctionBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I23:

blockI20-I25
Ischemic heart diseases (I20-I25)
View context instructions
chapterCH9
Diseases of the circulatory system (I00-I99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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