T40.991 - Poisoning by other psychodysleptics [hallucinogens], accidental (unintentional) T40.9 - Poisoning by, adverse effect of and underdosing of other and unspecified psychodysleptics [hallucinogens] T40.99 - Poisoning by, adverse effect of and underdosing of other psychodysleptics [hallucinogens] T40.991 - Poisoning by other psychodysleptics [hallucinogens], accidental (unintentional)