STEMI involving right coronary artery

This code signifies an acute ST-elevation myocardial infarction (STEMI) specifically affecting the right coronary artery (RCA). This is a severe type of heart attack where there is complete blockage of the RCA, leading to significant myocardial damage.

Assign this code when documentation explicitly states a STEMI and identifies the right coronary artery as the culprit vessel. This diagnosis is typically confirmed by characteristic ECG changes (ST elevation), elevated cardiac biomarkers, and often angiographic findings.

• Ensure the documentation specifies "STEMI" and not NSTEMI, as these are distinct diagnoses.
• Verify the specific coronary artery involved; if unspecified, a different code would be appropriate.
• Sequence this code as the principal diagnosis when it is the reason for the admission.