Disloc of unsp acromioclav jt, 100%-200% displacmnt, sequela

This code signifies a chronic or late effect of a severe acromioclavicular (AC) joint dislocation where the clavicle is displaced 100% to 200% relative to the acromion. This indicates a significant disruption of the AC joint ligaments, resulting in persistent instability or deformity. The "unspecified" laterality means the documentation does not specify whether it's the left or right shoulder.

Apply this code when documenting a patient presenting for treatment of a long-standing AC joint injury with 100-200% displacement, where the initial acute injury has already been treated or is no longer the primary focus. This is appropriate for follow-up visits, evaluations for reconstructive surgery, or management of chronic pain and dysfunction related to the past dislocation.

• Always ensure the documentation explicitly states "sequela" or indicates a chronic condition resulting from a previous injury.
• Verify the percentage of displacement is clearly documented as 100-200%; otherwise, a different displacement code may be more appropriate.
• If laterality (left or right) is specified in the medical record, choose the more specific code (S43.121S or S43.122S).