ICD-10-CM > S00-T88 > T36-T50 > T43 > T43.2 > T43.20 > T43.204 T43.204 Poisoning by unspecified antidepressants, undetermined Non-Billable/Non-Specific Codes T43.204A..., initial encounterT43.204D..., subsequent encounterT43.204S..., sequela