ICD-10-CM > S00-T88 > T36-T50 > T50 > T50.5 > T50.5X > T50.5X4 T50.5X4 Poisoning by appetite depressants, undetermined Non-Billable/Non-Specific Codes T50.5X4A..., initial encounterT50.5X4D..., subsequent encounterT50.5X4S..., sequela