ICD-10-CM > S00-T88 > T36-T50 > T49 > T49.1 > T49.1X > T49.1X4 T49.1X4 Poisoning by antipruritics, undetermined Non-Billable/Non-Specific Codes T49.1X4A..., initial encounterT49.1X4D..., subsequent encounterT49.1X4S..., sequela