The NCCI PTP-associated modifiers are: 24, 25, 27, 57, 58, 59, 78, 79, 91, E1 – E4, FA, F1- F9, LC, LD, LM, LT, RC, RI, RT, T1 – T9, TA. If any of these modifiers are used appropriately, then the NCCI edit denying reimbursement must be bypassed and reimbursement must be allowed for the secondary code.