Cardiology Coding Alert
You Only Have 1 Code Choice for NSTEMI
Question: My cardiologist documented a non-ST elevation myocardial infarction (NSTEMI). Which ICD-10-CM code should I report for this diagnosis? California Subscriber Answer: If your cardiologist documents a NSTEMI, you only have one code choice — I21.4 (Non-ST elevation (NSTEMI) myocardial infarction). Don’t miss: You should also report I21.4 for acute subendocardial myocardial infarction, non-Q wave myocardial infarction NOS, nontransmural myocardial infarction NOS, and type 1 non-ST elevation myocardial infarction. Don’t miss: If a type 1 NSTEMI evolves to a ST elevation myocardial infarction (STEMI), you should report the appropriate STEMI code, per the ICD-10-CM Official Guidelines for Coding and Reporting. However, if a type 1 STEMI converts to a NSTEMI because of thrombolytic therapy, you should report this condition with a STEMI code. NSTEMI defined: A NSTEMI is caused by a partial or near complete occlusion of a coronary artery and is usually identified by a rise in cardiac enzymes.
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