Our physicians allow monthly rotations of a resident physician program in our facility. These residents are always with the physicians as they are seeing the patients in the clinic. We only have a issue when the residents see the patient in the ER and the supervising doctor is not always available and the resident is seeing the patient sometimes alone without supervision. This would be nights and weekend call. My question is on the Q6 modifier and the locum tenens requirements. Have other offices used this modifier and has it applied to residents? Any help would be appreciated. My thoughts are that this senario would not apply for locum tenens.  Thank You!