ICD-10 Code
International Classification of Diseases, 10th Revision
Apr 20, 2019
  ICD-10 Code for Subsequent ST elevation (STEMI) myocardial infarction of unspecified site I22.9

I22.9 is a valid1 ICD 10 diagnosis code.

I22.9 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 I22 Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) 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
  • Subsequent acute myocardial infarction of unspecified site
  • Subsequent myocardial infarction (acute) NOS

Related Terms to “Subsequent ST elevation (STEMI) myocardial infarction of unspecified site”

  • Infarct, infarction
    • myocardium, myocardial(acute) (with stated duration of 4 weeks or less) - I21.9
      • ST elevation(STEMI) - I21.3
        • subsequent - I22.9
      • subsequent(recurrent) (reinfarction) - I22.9
        • ST elevation - I22.9
        • transmural - I22.9
        • type 1 - I22.9See also Infarction, myocardial, subsequent, by site, or by ST elevation or non-ST elevation
See the ICD-10-CM Coding Guidelines.

Questions related to I22.9 Subsequent ST elevation (STEMI) myocardial infarction of unspecified site

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.