STEMI involving oth sites

This code signifies an acute myocardial infarction characterized by ST-segment elevation on an electrocardiogram, indicating full-thickness myocardial necrosis. It specifically applies when the infarction involves a location other than the anterior, inferior, lateral, or posterior walls.

Use this code when documentation clearly states an ST elevation myocardial infarction (STEMI) and specifies an "other" or unspecified site of infarction, or a site not covered by more specific STEMI codes. Supporting documentation includes ECG findings confirming ST elevation and physician notes diagnosing an acute MI.

• Do not use this code if a more specific anatomical site (e.g., anterior, inferior) is documented for the STEMI.
• Always sequence this code as the principal diagnosis when it is the reason for the admission.
• Ensure the documentation specifies "ST elevation" to differentiate from non-ST elevation myocardial infarction (NSTEMI).