ICD-10-CM Diagnosis Code (2025)
Official Description for I21.09
ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wall
Coding Notes & Guidelines for I21.09
- Acute transmural myocardial infarction of anterior wall
- Anteroapical transmural (Q wave) infarction (acute)
- Anterolateral transmural (Q wave) infarction (acute)
- Anteroseptal transmural (Q wave) infarction (acute)
- Transmural (Q wave) infarction (acute) (of) anterior (wall) NOS
Parent Code (Less Specific):
About ICD-10-CM Code I21.09 (ST elevation)
ICD-10-CM code I21.09 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM I21.09 became effective on October 1, 2024.
This page provides detailed information about I21.09 - ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wall. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like ST elevation.