ICD-11 classes
11 Diseases of the circulatory system
Ischaemic heart diseases
Acute ischaemic heart disease
BA41 — Acute myocardial infarction

ICD-11 BA41 — Acute myocardial infarction

The term acute myocardial infarction (MI) should be used when there is evidence of myocardial necrosis in a clinical setting consistent with acute myocardial ischemia. Under these conditions any one of the following criteria meets the diagnosis for MI; Detection of a rise and/or fall of cardiac biomarker values with at least one value above the 99th percentile upper reference limit (URL ) and with at least one of the following; a. Symptoms of ischaemia.b. New or presumed new significant ST-segment-T wave (ST-T) changes or new left bundle branch block (LBBB).c. Development of pathologic Q waves in the ECG.d. Imaging evidence of new loss of viable myocardium or new regional wall motion abnormality.e. Identification of an intracoronary thrombus by angiography or autopsy.Infarction of any myocardial site, occurring within 4 weeks (28 days) from onset of a previous infarction (WHO)

The diagnosis includes nothing.

It excludes 4 items.

  • postmyocardial infarction syndrome (BA60.0)
  • Subsequent myocardial infarction (BA42)
  • Certain current complications following acute myocardial infarction (BA60)
  • Old myocardial infarction (BA50)

Diagnosis with code BA41 contains 3 clarifying diagnoses:

  1. BA41.0 — Acute ST elevation myocardial infarction
  2. BA41.1 — Acute non-ST elevation myocardial infarction
  3. BA41.Z — Acute myocardial infarction, unspecified

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