ICD-10-CM > S00-T88 > S60-S69 > S63 > S63.0 > S63.04 > S63.042 S63.042 Subluxation of carpometacarpal joint of left thumb Non-Billable/Non-Specific Codes S63.042A..., initial encounterS63.042D..., subsequent encounterS63.042S..., sequela