Fixation of motion segment with vertebral body screw, pedicle screw or hook instrumentation including sublaminar tapes or wires, more than 12 motion segments, excluding vertebral body tethering for the treatment of scoliosis and not being a service associated with a service to which item 51020, 51021, 51022, 51023, 51024 or 51025 applies (H) (Anaes.) (Assist.)