S43.131A Dislocation of right acromioclavicular joint, greater than 200% displacement, initial encounter

Name of the Condition

• Dislocation of Right Acromioclavicular Joint, Greater Than 200% Displacement, Initial Encounter

Summary

This condition involves a complete dislocation of the right acromioclavicular (AC) joint, where the clavicle is displaced from the acromion of the scapula by more than 200%. It typically results from significant trauma and may cause severe pain, instability, or restricted movement in the shoulder. The "initial encounter" designation indicates this is the first time the patient is receiving care for this specific injury.

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

• Severe pain and tenderness around the top of the 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 options in severe cases to realign the joint and stabilize it.

Prognosis and Follow-Up

Recovery depends on the severity of the injury and treatment approach. Most patients experience improved stability and reduced pain with appropriate care, but full recovery may take several months. Follow-up appointments are important to monitor healing and adjust treatment as needed.

Complications

• Chronic shoulder instability or recurrent dislocations.
• Nerve or blood vessel damage near the joint.
• Arthritis or long-term joint degeneration.
• Persistent pain or limited mobility.

Lifestyle & Prevention

• Use protective gear during contact sports or high-risk activities.
• Strengthen shoulder muscles through targeted exercises.
• Avoid falls by maintaining balance and using assistive devices if needed.
• Warm up properly before physical activity to reduce injury risk.

When to Seek Professional Help

Seek immediate medical attention if you experience severe shoulder pain, visible deformity, or inability to move the arm after an injury. Prompt evaluation can help prevent complications and ensure proper treatment.

Tips for Medical Coders

This code (S43.131A) is specific to the right acromioclavicular joint with greater than 200% displacement and an initial encounter. Documentation should clearly specify the side (right), the degree of displacement (>200%), and that this is the first encounter for the injury. Ensure the medical record supports these details to justify the code selection.