S43.142S Inferior dislocation of left acromioclavicular joint, sequela

Name of the Condition

• Inferior Dislocation of Left Acromioclavicular Joint, Sequela

Summary

This condition represents the residual effects of a prior inferior dislocation of the left acromioclavicular (AC) joint, where the clavicle remains displaced below the acromion of the scapula. It may result in chronic pain, instability, or restricted shoulder movement due to unresolved structural changes from the initial injury.

Causes

The sequela arises from a previous traumatic event, such as a fall, direct shoulder blow, or forceful movement, that caused the initial inferior dislocation. Incomplete healing or persistent joint instability can lead to long-term consequences.

Risk Factors

• History of shoulder trauma or prior AC joint injury.
• Ligamentous laxity or connective tissue disorders.
• Activities or occupations involving repetitive shoulder stress.
• Delayed or inadequate treatment of the initial dislocation.

Symptoms

• Persistent pain or discomfort at the left AC joint.
• Visible or palpable deformity of the joint.
• Reduced range of motion or shoulder function.
• Sensation of joint instability or "giving way."

Diagnosis

Diagnosis involves a physical examination to assess residual deformity, tenderness, and functional limitations. Imaging, such as X-rays, may confirm chronic displacement and rule out new injuries. Clinical correlation with the patient’s history of prior trauma is essential.

Treatment Options

• Conservative management, including physical therapy to improve strength and stability.
• Pain relief measures, such as NSAIDs or activity modification.
• Surgical intervention for severe instability or functional impairment, if clinically indicated.

Prognosis and Follow-Up

Prognosis depends on the extent of residual damage and response to treatment. Regular follow-up may be needed to monitor joint function and address ongoing symptoms. Long-term outcomes vary based on individual healing and rehabilitation.

Complications

• Chronic shoulder pain or arthritis in the AC joint.
• Persistent instability or recurrent subluxation.
• Reduced shoulder mobility affecting daily activities.
• Nerve or vascular irritation in severe cases.

Lifestyle & Prevention

• Avoid activities that stress the shoulder, especially contact sports.
• Use proper protective gear during high-risk activities.
• Engage in targeted exercises to strengthen shoulder muscles.
• Maintain good posture and avoid repetitive overhead movements.

When to Seek Professional Help

Seek care if symptoms worsen, new pain or deformity develops, or shoulder function declines significantly. Prompt evaluation is important if numbness, tingling, or circulation changes occur.

Tips for Medical Coders

This code (S43.142S) is used for the sequela of an inferior dislocation of the left AC joint. Document the relationship to the prior injury, including the time elapsed since the initial event, to support coding. Ensure clinical notes specify "sequela" or residual effects to justify the use of this code.