ICD-10-CM > S00-T88 > T51-T65 > T57 > T57.8 > T57.8X > T57.8X4 T57.8X4 Toxic effect of other specified inorganic substances, undetermined Non-Billable/Non-Specific Codes T57.8X4A..., initial encounterT57.8X4D..., subsequent encounterT57.8X4S..., sequela