T49.6X6 - Underdosing of otorhinolaryngological drugs and preparations T49.6 - Poisoning by, adverse effect of and underdosing of otorhinolaryngological drugs and preparations T49.6X - Poisoning by, adverse effect of and underdosing of otorhinolaryngological drugs and preparations T49.6X6 - Underdosing of otorhinolaryngological drugs and preparations