MODIFIER ORDER

The positioning of modifiers following the procedure codes aids in correctly processing services.For example, modifier -80 is necessary to identify a service as an assistant surgeon, and should be used in the first position. Other modifiers are exception modifiers, and tell the system to overlook the rule in this case, such as in NCCI editing.
The modifiers should be in the first or second position whenever possible
• E1, E2, E3, E4, FA, F1, F2, F3, F4, F5, F6, F7, F8, F9, GN, GO, GP, LC, LD, LR, LT, QA, QR,QV, Q3, RC, RT, TA, T1, T2, T3, T4, T5, T6, T7, T8, T9, 22, 24, 25, 50, 55, 59, 76, 80, 81, 90,91, 99

• These modifiers must remain on the detail line in the remaining fields
AK, GA, GB, Q4,`