T40.1 - Poisoning by and adverse effect of heroin T40 - Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens] T40.1 - Poisoning by and adverse effect of heroin T40.1X - Poisoning by and adverse effect of heroin T40.1X1 - Poisoning by heroin, accidental (unintentional) T40.1X2 - Poisoning by heroin, intentional self-harm T40.1X3 - Poisoning by heroin, assault T40.1X4 - Poisoning by heroin, undetermined