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