Wiki Class 3 angina

is class 3 angina considered unstable? and what would the code be?

As I understand it, the class is a measure of the severity, not of whether or not it is stable. I believe it is one factor in determining whether or not the angina is unstable, but by itself would not be sufficient to assign that diagnosis.

Without any additional information, I would code this as I20.9.
 
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