T42.3X - Poisoning by, adverse effect of and underdosing of barbiturates T42.3 - Poisoning by, adverse effect of and underdosing of barbiturates T42.3X - Poisoning by, adverse effect of and underdosing of barbiturates T42.3X1 - Poisoning by barbiturates, accidental (unintentional) T42.3X2 - Poisoning by barbiturates, intentional self-harm T42.3X3 - Poisoning by barbiturates, assault T42.3X4 - Poisoning by barbiturates, undetermined T42.3X5 - Adverse effect of barbiturates T42.3X6 - Underdosing of barbiturates