ICD-10-CM > S00-T88 > T51-T65 > T57 > T57.9 > T57.91 T57.91 Toxic effect of unspecified inorganic substance, accidental (unintentional) Non-Billable/Non-Specific Codes T57.91XA..., initial encounterT57.91XD..., subsequent encounterT57.91XS..., sequela