ICD-10-CM > S00-T88 > S00-S09 > S00 > S00.2 > S00.24 S00.24 External constriction of eyelid and periocular area Non-Billable/Non-Specific Codes S00.241External constriction of right eyelid and periocular areaS00.241A..., initial encounterS00.241D..., subsequent encounterS00.241S..., sequelaS00.242External constriction of left eyelid and periocular areaS00.242A..., initial encounterS00.242D..., subsequent encounterS00.242S..., sequelaS00.249External constriction of unspecified eyelid and periocular areaS00.249A..., initial encounterS00.249D..., subsequent encounterS00.249S..., sequela