ST elevation (STEMI) myocardial infarction involving left circumflex coronary artery
ICD-10 I21.21 is a billable code used to indicate a diagnosis of st elevation (stemi) myocardial infarction involving left circumflex coronary artery.
I21.21 refers to ST elevation myocardial infarction (STEMI) involving the left circumflex coronary artery. This condition occurs when there is a complete blockage of blood flow to a portion of the heart muscle supplied by the left circumflex artery, leading to ischemia and potential necrosis of the myocardial tissue. Clinical presentation typically includes severe chest pain, shortness of breath, and diaphoresis. Patients may also exhibit signs of heart failure or arrhythmias. The left circumflex artery supplies blood to the lateral and posterior walls of the left ventricle, making its involvement critical for cardiac function. Disease progression can lead to complications such as cardiogenic shock, heart failure, or sudden cardiac death if not promptly treated. Diagnostic considerations include the use of electrocardiograms (ECGs) to identify ST elevation, cardiac biomarkers to assess myocardial injury, and imaging studies to evaluate heart function. Immediate intervention, often through percutaneous coronary intervention (PCI) or thrombolytic therapy, is essential to restore blood flow and minimize heart damage.
Standard ICD-10-CM documentation requirements apply
Various clinical presentations within this specialty area
Follow specialty-specific billing guidelines
Standard ICD-10-CM documentation requirements apply
Various clinical presentations within this specialty area
Follow specialty-specific billing guidelines
I21.21 specifically covers ST elevation myocardial infarction involving the left circumflex coronary artery. This includes acute myocardial infarction with ST elevation as evidenced by ECG changes and elevated cardiac biomarkers.
I21.21 should be used when there is clear documentation of ST elevation myocardial infarction specifically involving the left circumflex artery, differentiating it from other types of myocardial infarctions that may not involve this artery.
Documentation should include ECG findings showing ST elevation, clinical symptoms consistent with myocardial infarction, and laboratory results indicating elevated cardiac enzymes. Detailed notes on the patient's history and treatment plan are also essential.
