S43.152S Posterior dislocation of left acromioclavicular joint, sequela

Name of the Condition

• Posterior Dislocation of Left Acromioclavicular Joint, Sequela

Summary

This condition represents the residual effects of a prior posterior dislocation of the left acromioclavicular (AC) joint. It involves the clavicle remaining displaced backward relative to the acromion of the scapula, resulting from a previous traumatic event. Sequela may include persistent pain, instability, or limited shoulder function.

Causes

The sequela arises from an initial posterior dislocation of the left AC joint, typically caused by trauma such as falls, direct shoulder blows, or forceful movements. The original injury may have been due to sports, accidents, or other high-impact events.

Risk Factors

• History of shoulder trauma or prior AC joint injury.
• Participation in contact sports or activities with fall risk.
• Age-related degeneration or connective tissue disorders.
• Occupations involving repetitive shoulder stress.

Symptoms

• Chronic pain or tenderness at the left AC joint.
• Persistent swelling or visible deformity.
• Reduced range of motion in the shoulder.
• Feeling of joint instability or "giving way."

Diagnosis

Diagnosis relies on clinical evaluation of residual symptoms and physical findings. Imaging, such as X-rays, may confirm the chronic displacement and rule out new injuries. Documentation should reflect the history of the original trauma and current functional limitations.

Treatment Options

• Conservative management: Physical therapy to improve strength and stability.
• Pain relief: NSAIDs or other analgesics for chronic discomfort.
• Surgical intervention: Considered for severe instability or persistent pain.
• Activity modification: Avoiding aggravating movements.

Prognosis and Follow-Up

Prognosis depends on the severity of the original injury and response to treatment. Regular follow-up monitors for worsening symptoms or complications. Most patients achieve functional improvement with appropriate care.

Complications

• Chronic shoulder instability.
• Persistent pain or reduced mobility.
• Arthritis in the AC joint over time.
• Nerve or vascular irritation from the displaced joint.

Lifestyle & Prevention

• Strengthen shoulder muscles through targeted exercises.
• Use protective gear during sports or high-risk activities.
• Avoid repetitive overhead movements that stress the joint.
• Maintain a healthy weight to reduce shoulder strain.

When to Seek Professional Help

Seek care if symptoms worsen, new pain occurs, or there is sudden loss of function. Immediate attention is needed for signs of nerve compression or vascular issues.

Tips for Medical Coders

Document the sequela clearly, noting the history of the original posterior dislocation and current clinical findings. Ensure the code S43.152S is used only when the condition is a late effect of the initial injury. Include details on functional impairment or treatment response to support medical necessity.