S82.452Q Displaced comminuted fracture of shaft of left fibula, subsequent encounter for open fracture type I or II with malunion

Name of the Condition

• Displaced comminuted fracture of shaft of left fibula, subsequent encounter for open fracture type I or II with malunion
• ICD-10 Code: S82.452Q

Summary

A displaced comminuted fracture of the shaft of the left fibula is a break in the long, slender bone of the lower leg where the bone is shattered into multiple pieces and the fragments are out of alignment. This is a subsequent encounter for an open fracture (type I or II) with malunion, meaning the fracture has healed in a non-anatomic position. The fracture involves the middle portion of the fibula and may result from significant trauma, with the skin initially broken and the bone fragments misaligned during healing.

Causes

This fracture is typically caused by direct trauma to the leg, such as a high-impact fall, motor vehicle accident, or sports injury, which forces the bone to break into several fragments and shift out of position. Open fractures occur when the force is sufficient to break the skin and expose the bone fragments. Malunion may develop if the fracture was not properly aligned during initial treatment or if healing occurred without adequate stabilization.

Risk Factors

• Participation in high-impact or contact sports
• Osteoporosis or other conditions that weaken bone density
• Advanced age, which may reduce bone strength
• Previous leg injuries or fractures
• Inadequate initial fracture management or immobilization

Symptoms

• Persistent pain and tenderness along the fibula
• Swelling, bruising, or deformity of the lower leg
• Inability to bear weight on the affected leg
• Possible instability or abnormal movement of the leg
• Visible or palpable malalignment of the bone

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and deformity, followed by imaging tests such as X-rays to confirm the fracture type, displacement, and malunion. Additional imaging like CT scans may be used for complex cases to evaluate the extent of comminution and malalignment. Clinical correlation with the patient's history of prior fracture and treatment is essential.

Treatment Options

Treatment depends on the severity of malunion and functional impairment. Options may include physical therapy to improve strength and mobility, orthopedic referral for possible corrective surgery (e.g., osteotomy), or continued monitoring if the malunion is asymptomatic. Pain management and activity modification are often part of the plan.

Prognosis and Follow-Up

Prognosis varies based on the degree of malunion and associated symptoms. Some patients may experience long-term pain or functional limitations, while others adapt well with conservative management. Regular follow-up with an orthopedic specialist is recommended to monitor healing and address any complications. Rehabilitation may be necessary to restore mobility and strength.

Complications

• Chronic pain or discomfort
• Limited range of motion or instability
• Increased risk of future fractures
• Nerve or vascular damage (rare)
• Need for surgical intervention to correct malunion

Lifestyle & Prevention

• Avoid high-impact activities that risk re-injury
• Use appropriate protective gear during sports
• Maintain bone health through diet and exercise
• Follow post-fracture care instructions to support proper healing
• Consult a healthcare provider before resuming strenuous activities

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or deformity after a leg injury. Contact your healthcare provider if you notice worsening symptoms, new numbness or tingling, or difficulty bearing weight, as these may indicate complications requiring intervention.

Tips for Medical Coders

Document the subsequent encounter for open fracture type I or II with malunion clearly, including details of the fracture's healing status and any corrective measures taken. Ensure the code S82.452Q is used only when the fracture is confirmed to have malunion and the encounter is for follow-up of the open fracture. Verify that the left fibula and shaft location are accurately documented to support code assignment.