Question: What is the diagnosis code for Q-wave myocardial infarction (MI)? Answer: Depending on the site of the MI, you should choose from codes 410.0x-410.9x, excluding code 410.7x (Subendocardial infarction), which is for a non-Q-wave MI.
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FYI: Cardiologists may refer to Q-wave MIs as STEMI (ST wave elevated myocardial infarction) and non-Q-wave MI as NSTEMI (Non ST wave elevated myocardial infarction).