S82.851K Displaced trimalleolar fracture of right lower leg, subsequent encounter for closed fracture with nonunion

Name of the Condition

• Displaced trimalleolar fracture of right lower leg, subsequent encounter for closed fracture with nonunion

Summary

This condition involves a displaced fracture of the right lower leg affecting all three malleoli (medial, lateral, and posterior) of the ankle joint. The fracture is closed (skin intact) and has progressed to nonunion, meaning the bone fragments have failed to heal properly during a subsequent encounter for treatment. This typically requires specialized management to promote healing and restore joint stability.

Causes

Trimalleolar fractures usually result from high-impact trauma, such as falls from a height, motor vehicle accidents, or severe twisting injuries to the ankle. Nonunion may develop due to inadequate immobilization, poor blood supply to the fracture site, infection, or excessive movement before healing is complete.

Risk Factors

• Participation in activities with high fall risk, such as contact sports or skiing.
• Advanced age, which may reduce bone density and increase fracture susceptibility.
• Osteoporosis or other bone-weakening conditions.
• Previous ankle injuries or ligamentous instability.
• Smoking or other factors that impair bone healing.

Symptoms

• Persistent pain, swelling, and bruising around the ankle.
• Inability to bear weight on the affected leg.
• Visible deformity or misalignment of the ankle joint.
• Tenderness and instability during movement.
• Lack of improvement in symptoms over time despite prior treatment.

Diagnosis

Diagnosis begins with a physical examination to assess pain, swelling, and joint stability. Imaging studies, such as X-rays or CT scans, are used to confirm the fracture pattern and evaluate for nonunion. Additional tests, like bone scans or MRI, may be performed to assess blood flow and healing potential.

Treatment Options

Treatment focuses on promoting bone union and restoring function. Options may include surgical intervention, such as internal fixation with plates or screws, bone grafting, or electrical stimulation to enhance healing. Non-surgical approaches, like prolonged immobilization or bracing, may be considered in select cases. Physical therapy is often recommended to improve strength and mobility.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and the effectiveness of treatment. Healing may take several months, and follow-up imaging is typically required to monitor progress. Long-term outcomes can include reduced mobility or chronic pain if healing is incomplete. Regular follow-up with an orthopedic specialist is essential to adjust treatment as needed.

Complications

• Chronic pain or instability of the ankle joint.
• Increased risk of arthritis due to joint damage.
• Need for additional surgeries if initial treatment fails.
• Potential for infection or delayed healing.
• Long-term disability affecting daily activities.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Maintain a healthy diet rich in calcium and vitamin D to support bone health.
• Use proper footwear and avoid uneven surfaces to reduce fall risk.
• Follow post-treatment guidelines for weight-bearing and activity restrictions.
• Quit smoking, as it impairs bone healing.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or deformity after an injury. Contact your healthcare provider if symptoms worsen or do not improve with treatment, or if you notice signs of infection, such as redness, warmth, or drainage.

Tips for Medical Coders

Document the encounter as a subsequent visit for a closed fracture with nonunion. Ensure the record specifies the fracture is displaced and involves all three malleoli of the right lower leg. Include details about prior treatments and the current status of healing to support the nonunion diagnosis.