I21.29
BillableST elevation (STEMI) myocardial infarction involving other sites
I21.29 is the ICD-10-CM code for ST elevation (STEMI) myocardial infarction involving other sites. It is a billable, specific code valid for reimbursement.
I00-I99 Diseases of the circulatory system
Includes
- •Acute transmural myocardial infarction of other sites
- •Apical-lateral transmural (Q wave) infarction (acute)
- •Basal-lateral transmural (Q wave) infarction (acute)
- •High lateral transmural (Q wave) infarction (acute)
- •Lateral (wall) NOS transmural (Q wave) infarction (acute)
- •Posterior (true) transmural (Q wave) infarction (acute)
- •Posterobasal transmural (Q wave) infarction (acute)
- •Posterolateral transmural (Q wave) infarction (acute)
- •Posteroseptal transmural (Q wave) infarction (acute)
- •Septal transmural (Q wave) infarction (acute) NOS
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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