Fixation of motion segment with vertebral body screw, pedicle screw or hook instrumentation including sublaminar tapes or wires, 2 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, 51023, 51024, 51025 or 51026 applies (H) (Anaes.) (Assist.)