I need some help on this modifier. So I have a claim denied.
Er trip #1 patient came in for other stimulant abuse (F15.10) in the morning

then ER trip #2 (on the same day) came in for Nausea (R11.0)

So since the patient came in 2 times within a day, would it be appropriate to append the modifier on the one being denied? I am not sure if the diagnosis are different if it would affect using modifier 27.