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I23Non-billableSave

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

ICD-10-CM Chapter 9: Diseases of the circulatory system · I20-I25 Ischemic heart diseases (I20-I25) · Top-level category · FY2027

Coding Guidance

I23 is a non-billable heading. Report one of the 9 more specific codes below.

Includes, Excludes and Coding Notes

Code AlsoFrom I20-I25 Ischemic heart diseases (I20-I25)

Report an additional code when both conditions apply.

  • the presence of hypertension (I10-I1A)
Excludes 2 — Not Included HereFrom Chapter I00-I99

Not part of this code; report both codes when the patient has both conditions.

  • 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.-)

More Specific Codes (9)

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

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with I23.