ICD-10 Code
International Classification of Diseases, 10th Revision
Apr 20, 2019

See: ST elevation (STEMI) myocardial infarction of other sites

  ICD-10 Code for ST elevation (STEMI) myocardial infarction involving other sites I21.29

I21.29 is a valid1 ICD 10 diagnosis code.

I21.29 is valid for submission for HIPAA-covered transactions.

Chapter 9 Diseases of the circulatory system (I00-I99)
Section I20-I25 Ischemic heart diseases (I20-I25)
Category I21 Acute myocardial infarction

• See below for any additional coding requirements that may be necessary.

• Check for any notations, inclusions and/or exclusions that are specific to this ICD 10 code before using

1 No additional coding requirements necessary.
Inclusion Term
  • Acute transmural myocardial infarction of other sites
  • Apical-lateral transmural (Q wave) infarction (acute)
  • Basal-lateral transmural (Q wave) infarction (acute)
  • High lateral transmural (Q wave) infarction (acute)
  • Lateral (wall) NOS transmural (Q wave) infarction (acute)
  • Posterior (true) transmural (Q wave) infarction (acute)
  • Posterobasal transmural (Q wave) infarction (acute)
  • Posterolateral transmural (Q wave) infarction (acute)
  • Posteroseptal transmural (Q wave) infarction (acute)
  • Septal transmural (Q wave) infarction (acute) NOS
See also ICD 10 code for

Related Terms to “ST elevation (STEMI) myocardial infarction involving other sites”

  • Infarct, infarction
    • myocardium, myocardial(acute) (with stated duration of 4 weeks or less) - I21.9
      • ST elevation(STEMI) - I21.3
        • lateral(apical-lateral) (basal-lateral) (high) - I21.29
        • posterior(posterobasal) (posterolateral) (posteroseptal) (true) - I21.29
        • septal - I21.29
        • specified NEC - I21.29
      • transmural - I21.9
        • lateral NEC(apical-lateral) (basal-lateral) (high) - I21.29
        • posterior NEC(posterobasal) (posterolateral) (posteroseptal) (true) - I21.29
        • septal NEC - I21.29
        • specified NEC - I21.29
See the ICD-10-CM Coding Guidelines.

Questions related to I21.29 ST elevation (STEMI) myocardial infarction involving other sites

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.