atc code r07 atc code r07 atc code r07 other respiratory system products 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 r07 is part of the anatomical group r respiratory system. atc codes r respiratory system r01 nasal preparations r02 throat preparations r03 drugs for obstructive airway diseases r05 cough and cold preparations r06 antihistamines for systemic use r07 other respiratory system products 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, qr07. 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. r07a other respiratory system products r07aa lung surfactants r07aa01 colfosceril palmitate r07aa02 natural phospholipids r07aa30 combinations r07ab respiratory stimulants r07ab01 doxapram r07ab02 nikethamide r07ab03 pentetrazol r07ab04 etamivan r07ab05 bemegride r07ab06 prethcamide r07ab07 almitrine r07ab08 dimefline r07ab09 mepixanox r07ab52 nikethamide, combinations r07ab53 pentetrazol, combinations qr07ab99 respiratory stimulants, combinations r07ax other respiratory system products r07ax01 nitric oxide r07ax02 ivacaftor r07ax30 ivacaftor and lumacaftor r07ax31 ivacaftor and tezacaftor r07ax32 ivacaftor, tezacaftor and elexacaftor