ICD-10-CM > S00-T88 > S60-S69 > S63 > S63.1 > S63.12 > S63.126 S63.126 Dislocation of interphalangeal joint of unspecified thumb Non-Billable/Non-Specific Codes S63.126A..., initial encounterS63.126D..., subsequent encounterS63.126S..., sequela