Hello,
I am new to Physical therapy billing and need some assistance with it. If a PT does Eval(97163) and does 1 unit each of 97110, 97112, 97116, and 97535 all on same day to a patient. Should I add modifier 59 to 97112, 97116, and 97535 ( total of 3 times once for each CPT) or should I add modifier 59 to 97110 also ( making it a total of 4 times) once for each CPT except evaluation.
Thanks!