Posterior dislocation of unsp acromioclavicular joint, subs

This code signifies a posterior dislocation of the acromioclavicular (AC) joint, where the clavicle is displaced behind the acromion, and the specific side (left or right) is not documented. This injury typically results from a direct blow to the shoulder or a fall onto the outstretched arm.

This code is appropriate for encounters following the initial treatment of a posterior AC joint dislocation, such as follow-up appointments, cast changes, or physical therapy sessions. It should be used when the documentation does not specify whether the dislocation occurred on the left or right side.

• Ensure the documentation clearly indicates a "subsequent encounter" for the injury.
• Verify that the dislocation is specifically described as "posterior" and that the laterality is "unspecified."
• If laterality is documented (left or right), select the more specific code.