Wiki Z86.79 - Duration of previous Diagnosis?

JMOconnor

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Hello! Please, we're a little stumped on this one. A "personal history of" code explains a diagnosis that

a. no longer exists and

b. the patient is not getting any treatment for BUT

c. could reoccur and therefore requires monitoring.

Is there a rule on how much time has to pass before a diagnosis slips into this category? So a patient who had tachycardia six months ago and returns for a follow-up - with no treatment in between - is this long enough? Code we are verifying is Z86.79.

Much appreciated, and thank you.
 
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