atc code d04 atc code d04 atc code d04 antipruritics, including antihistamines, anesthetics, etc. 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 d04 is part of the anatomical group d dermatologicals. atc codes d dermatologicals d01 antifungals for dermatological use d02 emollients and protectives d03 preparations for treatment of wounds and ulcers d04 antipruritics, including antihistamines, anesthetics, etc. d05 antipsoriatics d06 antibiotics and chemotherapeutics for dermatological use d07 corticosteroids, dermatological preparations d08 antiseptics and disinfectants d09 medicated dressings d10 anti-acne preparations d11 other dermatological preparations atcvet only qd51 products for the treatment of claws and hoofs 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, qd04. 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. d04a antipruritics, including antihistamines, anesthetics, etc. d04aa antihistamines for topical use d04aa01 thonzylamine d04aa02 mepyramine d04aa03 thenalidine d04aa04 tripelennamine d04aa09 chloropyramine d04aa10 promethazine d04aa12 tolpropamine d04aa13 dimetindene d04aa14 clemastine d04aa15 bamipine d04aa16 pheniramine d04aa22 isothipendyl d04aa32 diphenhydramine d04aa33 diphenhydramine methylbromide d04aa34 chlorphenoxamine d04ab anesthetics for topical use d04ab01 lidocaine d04ab02 cinchocaine d04ab03 oxybuprocaine d04ab04 benzocaine d04ab05 quinisocaine d04ab06 tetracaine d04ab07 pramocaine qd04ab51 lidocaine, combinations d04ax other antipruritics d04ax01 doxepin