ICD-10-CM > S00-T88 > T26-T28 > T26 > T26.5 T26.5 Corrosion of eyelid and periocular area Non-Billable/Non-Specific Code First (T51-T65) to identify chemical and intent Use Additional external cause code to identify place (Y92) Codes T26.50Corrosion of unspecified eyelid and periocular areaT26.50XA..., initial encounterT26.50XD..., subsequent encounterT26.50XS..., sequelaT26.51Corrosion of right eyelid and periocular areaT26.51XA..., initial encounterT26.51XD..., subsequent encounterT26.51XS..., sequelaT26.52Corrosion of left eyelid and periocular areaT26.52XA..., initial encounterT26.52XD..., subsequent encounterT26.52XS..., sequela