ICD-10-CM > S00-T88 > S60-S69 > S63 > S63.1 > S63.10 > S63.103 S63.103 Unspecified subluxation of unspecified thumb Non-Billable/Non-Specific Codes S63.103A..., initial encounterS63.103D..., subsequent encounterS63.103S..., sequela