ICD-10-CM Code I21.A

Other type of myocardial infarction

Version 2021 Non-Billable Code

Not Valid for Submission

I21.A is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of other type of myocardial infarction. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions.

Short Description:Other type of myocardial infarction
Long Description:Other type of myocardial infarction

Consider the following ICD-10 codes with a higher level of specificity:

  • I21.A1 - Myocardial infarction type 2
  • I21.A9 - Other myocardial infarction type

Code Classification

  • Diseases of the circulatory system (I00–I99)
    • Ischemic heart diseases (I20-I25)
      • Acute myocardial infarction (I21)

Code History

  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021