I21.29

Billable

ST 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.

Status
Billable
Chapter
I00-I99
Parent
I21.2
Edition
FY2026

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

What is ICD-10 code I21.29?
I21.29 is the ICD-10-CM code for "ST elevation (STEMI) myocardial infarction involving other sites". It falls under I00-I99 Diseases of the circulatory system.
Is I21.29 a billable code?
Yes — I21.29 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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