2022 ICD-10-CM Code I21.A

Other type of myocardial infarction

Version 2021

Not Valid for Submission

ICD-10:I21.A
Short Description:Other type of myocardial infarction
Long Description:Other type of myocardial infarction

Code Classification

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

I21.A is a non-specific and non-billable diagnosis 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 specific and is NOT valid for the year 2022 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding for Other type of myocardial infarction

Non-specific codes like I21.A require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for other type of myocardial infarction:

  • BILLABLE CODE - Use I21.A1 for Myocardial infarction type 2
  • BILLABLE CODE - Use I21.A9 for Other myocardial infarction type

Code History

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