ICD-10-CM > S00-T88 > T26-T28 > T26 > T26.5 > T26.50 T26.50 Corrosion of unspecified eyelid and periocular area Non-Billable/Non-Specific Codes T26.50XA..., initial encounterT26.50XD..., subsequent encounterT26.50XS..., sequela