ICD-10-CM > S00-T88 > T51-T65 > T54 > T54.9 T54.9 Toxic effects of unspecified corrosive substance Non-Billable/Non-Specific Codes T54.91Toxic effect of unspecified corrosive substance, accidental (unintentional)T54.91XA..., initial encounterT54.91XD..., subsequent encounterT54.91XS..., sequelaT54.92Toxic effect of unspecified corrosive substance, intentional self-harmT54.92XA..., initial encounterT54.92XD..., subsequent encounterT54.92XS..., sequelaT54.93Toxic effect of unspecified corrosive substance, assaultT54.93XA..., initial encounterT54.93XD..., subsequent encounterT54.93XS..., sequelaT54.94Toxic effect of unspecified corrosive substance, undeterminedT54.94XA..., initial encounterT54.94XD..., subsequent encounterT54.94XS..., sequela