S43.129A Dislocation of unspecified acromioclavicular joint, 100%-200% displacement, initial encounter

Name of the Condition

• Dislocation of Unspecified Acromioclavicular Joint, 100%-200% Displacement, Initial Encounter

Summary

This condition involves a complete dislocation of the 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. The "initial encounter" designation indicates this is the first time the patient is seeking care for this 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

• 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. The unspecified side designation means the exact side of the body affected is not documented.

Treatment Options

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

Prognosis and Follow-Up

Prognosis depends on the severity of the injury and treatment approach. Most patients recover with appropriate care, but some may experience long-term shoulder instability. Follow-up appointments monitor healing and functional recovery.

Complications

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

Lifestyle & Prevention

• Use protective gear during contact sports.
• Strengthen shoulder muscles through exercise.
• Avoid activities that place excessive stress on the shoulder.

When to Seek Professional Help

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

Tips for Medical Coders

This code is used for the initial encounter of a complete dislocation of the acromioclavicular joint with 100%-200% displacement, where the side is not specified. Documentation should clearly indicate the injury is new and the displacement percentage. Ensure the "initial encounter" status is supported by clinical notes.