ICD Code I21.09

ICD code I21.09 is ST elevation (STEMI) myocardial infarction involving other coronary artery of the anterior wall.

1. Patient presents with acute chest pain or equivalent ischemic symptoms.

2. Electrocardiogram (ECG) shows new ST-segment elevation in two or more contiguous leads.

3. Cardiac biomarkers (e.g., troponin) are elevated, indicating myocardial injury.

4. Evidence confirms myocardial infarction is localized to the anterior wall of the heart.

5. Coronary angiography or imaging identifies involvement of a coronary artery other than the left anterior descending artery.

6. No evidence of a prior myocardial infarction in the same location.

7. Clinical presentation is consistent with an acute STEMI event.

Relevant CPT codes for ICD-10 code I21.09 may include:

- 92928: Percutaneous transcatheter placement of intracoronary stent(s), with coronary angioplasty when performed; single major coronary artery or branch

- 92920: Percutaneous transluminal coronary angioplasty; single major coronary artery or branch

- 92941: Percutaneous transluminal revascularization of acute total/subtotal occlusion during myocardial infarction, coronary artery or branch

- 93454: Catheter placement in coronary arteries for coronary angiography, including intraprocedural injection(s) and imaging supervision and interpretation

- 92973: Thrombectomy, coronary, by mechanical means

- 92950: Cardiopulmonary resuscitation (e.g., in cardiac arrest)

- 92960: Cardioversion, elective, electrical conversion of arrhythmia

These CPT codes are commonly associated with the treatment of ICD-10 code I21.09.

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