ICD-10-CM > S00-T88 > S60-S69 > S63 > S63.2 > S63.23 > S63.237 S63.237 Subluxation of proximal interphalangeal joint of left little finger Non-Billable/Non-Specific Codes S63.237A..., initial encounterS63.237D..., subsequent encounterS63.237S..., sequela