ICD-10-CM > S00-T88 > S40-S49 > S43 > S43.2 > S43.22 > S43.226 S43.226 Posterior dislocation of unspecified sternoclavicular joint Non-Billable/Non-Specific Codes S43.226A..., initial encounterS43.226D..., subsequent encounterS43.226S..., sequela