ICD-10-CM > S00-T88 > S40-S49 > S43 > S43.2 > S43.22 > S43.223 S43.223 Posterior subluxation of unspecified sternoclavicular joint Non-Billable/Non-Specific Codes S43.223A..., initial encounterS43.223D..., subsequent encounterS43.223S..., sequela