S43.132D Dislocation of left acromioclavicular joint, greater than 200% displacement, subsequent encounter

Name of the Condition

• Dislocation of Left Acromioclavicular Joint, Greater Than 200% Displacement, Subsequent Encounter

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 more than 200%. It typically results from significant trauma and may cause severe pain, instability, or restricted movement in the shoulder. The "subsequent encounter" designation indicates this is a follow-up visit for the same injury, not the initial treatment.

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 restore function.
• Surgical intervention may be considered for severe cases or persistent instability.

Prognosis and Follow-Up

Recovery depends on the severity of the injury and treatment approach. Follow-up care is essential to monitor healing and prevent long-term complications like chronic instability or arthritis.

Complications

• Chronic shoulder instability or recurrent dislocation.
• Nerve or blood vessel damage in severe cases.
• Post-traumatic arthritis in the joint.

Lifestyle & Prevention

• Avoid high-risk activities or use protective gear during sports.
• Strengthen shoulder muscles through targeted exercises.
• Maintain proper posture and avoid repetitive overhead movements.

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.

Tips for Medical Coders

Use this code for a subsequent encounter (D) for a left acromioclavicular joint dislocation with greater than 200% displacement. Ensure documentation confirms the laterality (left), displacement percentage, and that this is a follow-up visit, not the initial encounter.