ICD-10-CM Code I21: Acute myocardial infarction and Related Diagnosis Codes.


The ICD-10-CM (the International Classification of Diseases, Tenth Revision, Clinical Modification) is a standardized coding system used when classifying diseases and medical conditions. Healthcare providers report these codes on Medical claims when diagnosing patient care.

Explore ICD-10-CM codes, organized by chapters based on body systems and medical conditions, as outlined in the International Classification of Diseases, Tenth Revision, Clinical Modification.

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Eclaims - ICD-10-CM Tabular Code List v1.0.0

A categorized list of ICD-10-CM codes organized by chapters based on body systems or medical conditions, according to the International Classification of Diseases, Tenth Revision, Clinical Modification.

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  • I21 - Acute myocardial infarction
    • I21.0 - ST elevation (STEMI) myocardial infarction of anterior wall
      • I21.01 - ST elevation (STEMI) myocardial infarction involving left main coronary artery
      • I21.02 - ST elevation (STEMI) myocardial infarction involving left anterior descending coronary artery
      • I21.09 - ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wall
    • I21.1 - ST elevation (STEMI) myocardial infarction of inferior wall
      • I21.11 - ST elevation (STEMI) myocardial infarction involving right coronary artery
      • I21.19 - ST elevation (STEMI) myocardial infarction involving other coronary artery of inferior wall
    • I21.2 - ST elevation (STEMI) myocardial infarction of other sites
      • I21.21 - ST elevation (STEMI) myocardial infarction involving left circumflex coronary artery
      • I21.29 - ST elevation (STEMI) myocardial infarction involving other sites
    • I21.3 - ST elevation (STEMI) myocardial infarction of unspecified site
    • I21.4 - Non-ST elevation (NSTEMI) myocardial infarction
    • I21.9 - Acute myocardial infarction, unspecified
    • I21.A - Other type of myocardial infarction
      • I21.A1 - Myocardial infarction type 2
      • I21.A9 - Other myocardial infarction type
    • I21.B - Myocardial infarction with coronary microvascular dysfunction

Note: The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) codes are developed and maintained by the Centers for Disease Control and Prevention (CDC). CDC's National Center for Health Statistics (NCHS) is responsible for the clinical modification of ICD-10 for use in the United States. The World Health Organization (WHO), which owns and publishes ICD-10, authorized NCHS to develop ICD-10-CM. All modifications to ICD-10 must conform to WHO's established ICD structure and conventions. All rights are reserved by the respective entities.