ICD-10-CM > S00-T88 > T36-T50 > T42 > T42.0 > T42.0X > T42.0X1 T42.0X1 Poisoning by hydantoin derivatives, accidental (unintentional) Non-Billable/Non-Specific Applicable To Poisoning by hydantoin derivatives NOS Codes T42.0X1A..., initial encounterT42.0X1D..., subsequent encounterT42.0X1S..., sequela