atc code s02 atc code s02 atc code s02 otologicals is a therapeutic subgroup of the anatomical therapeutic chemical classification system, a system of alphanumeric codes developed by the world health organization (who) for the classification of drugs and other medical products. subgroup s02 is part of the anatomical group s sensory organs. atc codes s sensory organs s01 ophthalmologicals s02 otologicals s03 ophthalmological and otological preparations a b c d g h qi j l m n p r s v codes for veterinary use (atcvet codes) can be created by placing the letter q in front of the human atc code: for example, qs02. atcvet codes without corresponding human atc codes are cited with the leading q in the following list.national issues of the atc classification may include additional codes not present in this list, which follows the who version. s02a anti-infectives s02aa anti-infectives s02aa01 chloramphenicol s02aa02 nitrofural s02aa03 boric acid s02aa04 aluminium acetotartrate s02aa05 clioquinol s02aa06 hydrogen peroxide s02aa07 neomycin s02aa08 tetracycline s02aa09 chlorhexidine s02aa10 acetic acid s02aa11 polymyxin b s02aa12 rifamycin s02aa13 miconazole s02aa14 gentamicin s02aa15 ciprofloxacin s02aa16 ofloxacin s02aa17 fosfomycin s02aa18 cefmenoxime s02aa30 antiinfectives, combinations qs02aa57 neomycin, combinations s02b corticosteroids s02ba corticosteroids s02ba01 hydrocortisone s02ba03 prednisolone s02ba06 dexamethasone s02ba07 betamethasone s02ba08 fluocinolone acetonide qs02ba99 corticosteroids, combinations s02c corticosteroids and anti-infectives in combination s02ca corticosteroids and anti-infectives in combination s02ca01 prednisolone and antiinfectives s02ca02 flumetasone and antiinfectives s02ca03 hydrocortisone and antiinfectives s02ca04 triamcinolone and antiinfectives s02ca05 fluocinolone acetonide and antiinfectives s02ca06 dexamethasone and antiinfectives s02ca07 fludrocortisone and antiinfectives qs02ca90 betamethasone and antiinfectives qs02ca91 mometasone and antiinfectives s02d other otologicals s02da analgesics and anesthetics s02da01 lidocaine s02da02 cocaine s02da03 phenazone s02da04 cinchocaine s02da30 combinations qs02q antiparasitics qs02qa antiparasitics qs02qa01 lindane qs02qa02 sulfiram qs02qa03 ivermectin qs02qa51 lindane, combinations