ICD-10-CM > S00-T88 > T36-T50 > T42 > T42.1 > T42.1X > T42.1X4 T42.1X4 Poisoning by iminostilbenes, undetermined Non-Billable/Non-Specific Codes T42.1X4A..., initial encounterT42.1X4D..., subsequent encounterT42.1X4S..., sequela