coding influenza

please advise, if you are coding an ER chart where the doctor puts dx influenza nos. lab work is done (influenza a and b test) the patient test positive for influenza a. no further test done. what should code be, 487.1 or 488.02

coding influenza

I would use 487.1

influenza

i would also use 487.1 legally coders can not code from labs alone without a physician confirming.