ICD-10-CM > S00-T88 > T36-T50 > T42 > T42.0 > T42.0X > T42.0X2 T42.0X2 Poisoning by hydantoin derivatives, intentional self-harm Non-Billable/Non-Specific Codes T42.0X2A..., initial encounterT42.0X2D..., subsequent encounterT42.0X2S..., sequela