ICD-10-CM > S00-T88 > T36-T50 > T40 > T40.9 > T40.90 T40.90 Poisoning by, adverse effect of and underdosing of unspecified psychodysleptics [hallucinogens] Non-Billable/Non-Specific Codes T40.901Poisoning by unspecified psychodysleptics [hallucinogens], accidental (unintentional)T40.901A..., initial encounterT40.901D..., subsequent encounterT40.901S..., sequelaT40.902Poisoning by unspecified psychodysleptics [hallucinogens], intentional self-harmT40.902A..., initial encounterT40.902D..., subsequent encounterT40.902S..., sequelaT40.903Poisoning by unspecified psychodysleptics [hallucinogens], assaultT40.903A..., initial encounterT40.903D..., subsequent encounterT40.903S..., sequelaT40.904Poisoning by unspecified psychodysleptics [hallucinogens], undeterminedT40.904A..., initial encounterT40.904D..., subsequent encounterT40.904S..., sequelaT40.905Adverse effect of unspecified psychodysleptics [hallucinogens]T40.905A..., initial encounterT40.905D..., subsequent encounterT40.905S..., sequelaT40.906Underdosing of unspecified psychodysleptics [hallucinogens]T40.906A..., initial encounterT40.906D..., subsequent encounterT40.906S..., sequela