ICD-10-CM > S00-T88 > S60-S69 > S63 > S63.6 > S63.62 > S63.629 S63.629 Sprain of interphalangeal joint of unspecified thumb Non-Billable/Non-Specific Codes S63.629A..., initial encounterS63.629D..., subsequent encounterS63.629S..., sequela