What modifier should be appended to procedure codes when a resident is involved with a patient's care?

The appropriate modifier to append to procedure codes when a resident is involved in a patient's care is the modifier GC, which indicates that the service was performed by a resident under the supervision of a teaching physician. This modifier serves to clarify that while the resident is directly engaged in the patient’s management, there is a supervising physician who is responsible for the care.

Using the GC modifier signals to payers that the resident's participation in the procedure is part of a recognized educational program and that the teaching physician is present or available. This is relevant for appropriate coding and billing, ensuring that the service qualifies for reimbursement under policies that support graduate medical education.

Understanding the importance of this modifier helps reinforce the relationship between residents and supervising physicians in the context of patient care, emphasizing compliance with guidelines established by Medicare and other insurers regarding the involvement of residents in medical services.