Functional sinus surgery, complete dissection of all 5 sinuses to create a single sinus cavity, with extended drilling of frontal sinuses, unilateral, other than a service associated with a service to which item 41662, 41698, 41702, 41703, 41710, 41734, 41737, 41752 or 41764 applies on the same side (H) (Anaes.) (Assist.)