ICD-10-CM > S00-T88 > T36-T50 > T43 > T43.9 > T43.94 T43.94 Poisoning by unspecified psychotropic drug, undetermined Non-Billable/Non-Specific Codes T43.94XA..., initial encounterT43.94XD..., subsequent encounterT43.94XS..., sequela