I21.1
Header — not billableST elevation (STEMI) myocardial infarction of inferior wall
The ICD-10 code for st elevation (stemi) myocardial infarction of inferior wall is I21.1.
I21.1 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 2 more specific codes below.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Type 1 ST elevation myocardial infarction of inferior wall
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- I21.0ST elevation (STEMI) myocardial infarction of anterior wallnon-billable header
- I21.2ST elevation (STEMI) myocardial infarction of other sitesnon-billable header
- I21.3ST elevation (STEMI) myocardial infarction of unspecified site
- I21.4Non-ST elevation (NSTEMI) myocardial infarction
- I21.9Acute myocardial infarction, unspecified
- I21.AOther type of myocardial infarctionnon-billable header
- I21.BMyocardial infarction with coronary microvascular dysfunction
- I21.1ST elevation (STEMI) myocardial infarction of inferior wallnon-billable header