ICD-10-CM > S00-T88 > S60-S69 > S63 > S63.1 > S63.12 > S63.122 S63.122 Subluxation of interphalangeal joint of left thumb Non-Billable/Non-Specific Codes S63.122A..., initial encounterS63.122D..., subsequent encounterS63.122S..., sequela