ICD-10-CM > S00-T88 > S40-S49 > S43 > S43.1 > S43.12 > S43.121 S43.121 Dislocation of right acromioclavicular joint, 100%-200% displacement Non-Billable/Non-Specific Codes S43.121A..., initial encounterS43.121D..., subsequent encounterS43.121S..., sequela