ICD-10-CM > S00-T88 > S60-S69 > S63 > S63.6 > S63.65 > S63.657 S63.657 Sprain of metacarpophalangeal joint of left little finger Non-Billable/Non-Specific Codes S63.657A..., initial encounterS63.657D..., subsequent encounterS63.657S..., sequela