ICD-10-CM > S00-T88 > T26-T28 > T26 > T26.9 T26.9 Corrosion of eye and adnexa, part unspecified Non-Billable/Non-Specific Code First (T51-T65) to identify chemical and intent Use Additional external cause code to identify place (Y92) Codes T26.90Corrosion of unspecified eye and adnexa, part unspecifiedT26.90XA..., initial encounterT26.90XD..., subsequent encounterT26.90XS..., sequelaT26.91Corrosion of right eye and adnexa, part unspecifiedT26.91XA..., initial encounterT26.91XD..., subsequent encounterT26.91XS..., sequelaT26.92Corrosion of left eye and adnexa, part unspecifiedT26.92XA..., initial encounterT26.92XD..., subsequent encounterT26.92XS..., sequela