With little source documentation to use as instruction, how do we educate providers and coders to properly identify and select from the new codes for pulmonary embolisms and DVTs?

Is there a clear cut off when "HX of" becomes expected (i.e. verbiage or length of time since treatment? Cessation of treatment?).

What triggers in documentation do other coders use to change from acute to chronic, and do they default when it's unclear? If so, to what?