I21.3
BillableST elevation (STEMI) myocardial infarction of unspecified site
I21.3 is the ICD-10-CM code for ST elevation (STEMI) myocardial infarction of unspecified site. It is a billable, specific code valid for reimbursement.
I00-I99 Diseases of the circulatory system
Includes
- •Acute transmural myocardial infarction of unspecified site
- •Transmural (Q wave) myocardial infarction NOS
- •Type 1 ST elevation myocardial infarction of unspecified site
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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