ICD-10-CM > S00-T88 > T36-T50 > T40 > T40.9 > T40.99 > T40.995 T40.995 Adverse effect of other psychodysleptics [hallucinogens] Non-Billable/Non-Specific Codes T40.995A..., initial encounterT40.995D..., subsequent encounterT40.995S..., sequela