ICD-10-CM > S00-T88 > S60-S69 > S63 > S63.4 > S63.42 > S63.421 S63.421 Traumatic rupture of palmar ligament of left index finger at metacarpophalangeal and interphalangeal joint Non-Billable/Non-Specific Codes S63.421A..., initial encounterS63.421D..., subsequent encounterS63.421S..., sequela