ICD-10-CM > S00-T88 > S60-S69 > S63 > S63.6 > S63.65 > S63.655 S63.655 Sprain of metacarpophalangeal joint of left ring finger Non-Billable/Non-Specific Codes S63.655A..., initial encounterS63.655D..., subsequent encounterS63.655S..., sequela