ICD-10-CM > S00-T88 > S60-S69 > S63 > S63.6 > S63.63 > S63.633 S63.633 Sprain of interphalangeal joint of left middle finger Non-Billable/Non-Specific Codes S63.633A..., initial encounterS63.633D..., subsequent encounterS63.633S..., sequela