ED Coding and Reimbursement Alert
Reader Questions:
Go Below Code Descriptor for Dx Synonyms
Published on Tue Mar 14, 2023
Question: Encounter notes indicate that the physician treated a patient with “acute subendocardial MI.” I know MI stands for myocardial infarction, but which type of MI does this note describe? AAPC Forum Subscriber Answer: The diagnosis code for this MI is I21.4 (Non-ST elevation (NSTEMI) myocardial infarction). Per ICD-10, the condition goes by several names, which are listed below the descriptor for I21.4: 
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