S43.121S Dislocation of right acromioclavicular joint, 100%-200% displacement, sequela

Name of the Condition

• Dislocation of Right Acromioclavicular Joint, 100%-200% Displacement, Sequela

Summary

This condition represents a sequela of a previously dislocated right acromioclavicular (AC) joint, where the clavicle was displaced from the acromion of the scapula by 100% to 200% of its normal width. It reflects residual effects or complications following the initial injury, which may include persistent pain, instability, or functional limitations in the shoulder.

Causes

The sequela arises from a prior traumatic event that caused the dislocation, such as falls, direct shoulder blows, or forceful movements. Common triggers include sports injuries, motor vehicle accidents, or falls. The residual effects stem from incomplete healing, ligamentous damage, or associated soft tissue injury.

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

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

Diagnosis

Diagnosis involves a physical examination to assess tenderness, deformity, and range of motion. Imaging tests like X-rays may be used to confirm residual displacement and rule out fractures. Clinical history of a prior dislocation is critical for identifying the sequela.

Treatment Options

• Non-surgical treatments such as rest, ice, and physical therapy to restore function.
• Pain management with medications or injections.
• Surgical intervention for persistent instability or severe deformity.

Prognosis and Follow-Up

Prognosis depends on the extent of residual damage and treatment. Most patients improve with conservative care, but some may experience long-term limitations. Follow-up monitoring ensures recovery and addresses any recurrent symptoms.

Complications

• Chronic shoulder instability or recurrent dislocation.
• Persistent pain or reduced mobility.
• Arthritis or degenerative changes in the joint.
• Nerve or vascular injury in severe cases.

Lifestyle & Prevention

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

When to Seek Professional Help

Seek care if you experience worsening pain, new deformity, or loss of shoulder function. Immediate attention is needed for signs of infection, severe swelling, or inability to move the arm.

Tips for Medical Coders

Document the sequela status clearly, noting the prior dislocation and residual effects. Ensure clinical details support the 100%-200% displacement and right-sided involvement. Include any relevant imaging or physical exam findings to validate the code.