MI without stated duration

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The medical record says: "stress test normal during past year with nuclear contrast, with the exception of a small area of inferoapical ischemia" How do I code this?
The guideline says subcatgory 410.9 is the default for the unspecified term acute myocardial infarction. If the record does not document the duration, would I use 410.90? Am I interpreting this correctly?
Thanks.
 
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15
Location
Albany
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0
inferoapical ischemia

okay. so when I go to ischemia, ischemic 459.9, the only subcategory might be heart 414.9, there is nothing for inferoapical ischemia;
so I use 414.9?
 
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