When "bilateral" or "unilateral or bilateral" is included within the procedure code description the bilateral reimbursement does not apply and the procedure should not be reported with modifiers 50, RT or LT. In some instances, procedure codes do not indicate which side of the body a procedure is performed. In those instances, the modifier RT or LT may be used to indicate the side of the body on which a service or procedure is performed. Specifically, modifiers RT and LT should be used to identify procedures that can be performed on contralateral anatomic sites (such as bones, joints), paired organs (such as ears, eyes, nasal passages, kidneys, lungs, or ovaries), or extremities (such as arms or legs). Modifiers RT and LT should be used to indicate the procedure is performed on only one side of the body.