Forum - Questions & Answers

Nov 6th, 2015 - sylvia2764

ICD-9-CM code for old myocardial infarction

My question concerns ICD-9-CM code 412, old myocardial infarction. I need to know when is it inappropriate to assign as a secondary code? I'm going nuts studying but I must be missing it because it's not registering! Thank you!

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