Posterior dislocation of unsp acromioclav jt, sequela

This code signifies a long-term complication or late effect stemming from a posterior dislocation of the acromioclavicular (AC) joint, where the specific side (left or right) is not documented. It indicates that the initial injury has resolved, but the patient continues to experience residual problems directly attributable to that past dislocation.

Apply this code when a patient presents with chronic pain, instability, limited range of motion, or other persistent issues in the shoulder region, and the medical record clearly links these symptoms to a previously sustained posterior AC joint dislocation. This is appropriate for follow-up visits addressing these lasting effects, rather than the initial acute injury.

• Only use the "S" (sequela) seventh character when the acute phase of the injury has passed and the patient is being treated for the residual effects.
• Ensure documentation explicitly states the posterior nature of the AC joint dislocation.
• If the laterality (left or right) of the affected AC joint is specified in the medical record, a more specific code should be chosen.