S43.122 Dislocation of left acromioclavicular joint, 100%-200% displacement

Name of the Condition

• Dislocation of Left Acromioclavicular Joint, 100%-200% Displacement

Summary

This condition involves a complete dislocation of the left acromioclavicular (AC) joint, where the clavicle is displaced from the acromion of the scapula by 100% to 200% of its normal width. It typically results from trauma and may cause pain, instability, or restricted movement in the shoulder.

Causes

Traumatic events like falls, direct blows to the shoulder, or forceful movements can cause this dislocation. Sports injuries, motor vehicle accidents, or falls are common triggers.

Risk Factors

• Participation in contact sports or activities with high fall risk.
• Previous shoulder injuries or ligamentous instability.
• Age-related degeneration or connective tissue disorders.
• Occupations requiring repetitive arm or shoulder movements.

Symptoms

• Pain and tenderness around the top of the left shoulder.
• Visible deformity or swelling over the acromioclavicular joint.
• Limited range of motion in the shoulder.
• Sensation of the joint "popping out" or feeling unstable.

Diagnosis

Diagnosis typically involves a physical examination to assess tenderness, deformity, and range of motion. Imaging tests like X-rays may be used to confirm displacement and rule out fractures.

Treatment Options

• Non-surgical treatments such as rest, ice, and physical therapy to reduce pain and restore function.
• Surgical intervention may be considered for severe cases or persistent instability.

Prognosis and Follow-Up

Most patients recover with appropriate treatment, though recovery time varies. Follow-up care may include physical therapy to strengthen the joint and prevent recurrence.

Complications

• Chronic shoulder instability or pain.
• Nerve or blood vessel damage in severe cases.
• Arthritis in the acromioclavicular joint over time.

Lifestyle & Prevention

• Use protective gear during contact sports.
• Avoid activities that strain the shoulder until fully healed.
• Strengthen shoulder muscles through targeted exercises.

When to Seek Professional Help

Seek immediate care if you experience severe pain, visible deformity, or inability to move the shoulder after an injury.

Tips for Medical Coders

Document the side (left) and displacement percentage (100%-200%) clearly. Ensure clinical notes support the diagnosis and specify if this is an initial or subsequent encounter.