Non-ST elevation (NSTEMI) myocardial infarction
ICD-10 I21.4 is a billable code used to indicate a diagnosis of non-st elevation (nstemi) myocardial infarction.
Non-ST elevation myocardial infarction (NSTEMI) is a type of heart attack characterized by the absence of ST-segment elevation on an electrocardiogram (ECG). It occurs when there is a partial blockage of blood flow to the heart muscle, typically due to a ruptured atherosclerotic plaque and subsequent thrombosis. Clinically, patients may present with chest pain, shortness of breath, and other symptoms of ischemia. The anatomy involved includes the coronary arteries supplying blood to the myocardium, particularly the left anterior descending artery, right coronary artery, and circumflex artery. Disease progression can lead to significant myocardial damage if not promptly treated, and it may result in complications such as heart failure or arrhythmias. Diagnostic considerations include ECG findings, cardiac biomarkers (e.g., troponin levels), and imaging studies. Timely diagnosis and management are crucial to improving outcomes and preventing further cardiovascular events.
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
I21.4 covers non-ST elevation myocardial infarction, which is diagnosed based on clinical symptoms, elevated cardiac biomarkers, and ECG findings that do not show ST-segment elevation.
I21.4 should be used when a patient presents with symptoms of myocardial infarction, has elevated cardiac markers, but does not exhibit ST-segment elevation on the ECG, differentiating it from STEMI and unstable angina.
Documentation should include a detailed account of the patient's symptoms, results of ECG and cardiac biomarker tests, and any imaging studies performed to support the diagnosis of NSTEMI.
