ICD-10-CM > S00-T88 > S00-S09 > S01 > S01.1 > S01.15 > S01.159 S01.159 Open bite of unspecified eyelid and periocular area Non-Billable/Non-Specific Codes S01.159A..., initial encounterS01.159D..., subsequent encounterS01.159S..., sequela