ICD-10-CM > S00-T88 > S40-S49 > S43 > S43.2 > S43.20 > S43.203 S43.203 Unspecified subluxation of unspecified sternoclavicular joint Non-Billable/Non-Specific Codes S43.203A..., initial encounterS43.203D..., subsequent encounterS43.203S..., sequela