S82.421K Displaced transverse fracture of shaft of right fibula, subsequent encounter for closed fracture with nonunion

Name of the Condition

• Displaced transverse fracture of shaft of right fibula, subsequent encounter for closed fracture with nonunion
• ICD-10 Code: S82.421K

Summary

This condition describes a break in the shaft of the right fibula where the fracture line runs horizontally across the bone, and the bone fragments are separated and misaligned. The fracture is closed (skin remains intact) and has not healed properly, resulting in nonunion. This is a subsequent encounter, indicating ongoing care for the established nonunion.

Causes

Most commonly caused by initial trauma to the leg, such as falls, sports injuries, or motor vehicle accidents. Nonunion may develop if the fracture fails to heal due to inadequate immobilization, poor blood supply, infection, or excessive movement at the fracture site.

Risk Factors

• Participation in high-impact activities or contact sports.
• Osteoporosis or reduced bone density, which impairs healing.
• Smoking or poor nutrition, which can delay bone repair.
• Advanced age, which may weaken bone strength.
• Previous leg injuries or surgeries that affect healing.

Symptoms

• Persistent pain and swelling in the lower leg.
• Difficulty bearing weight on the affected leg.
• Bruising or tenderness around the injured area.
• Possible deformity or instability of the leg structure.
• No visible healing progress over time.

Diagnosis

Diagnosis involves a physical examination to assess tenderness, swelling, and deformity. Imaging tests, such as X-rays or CT scans, are used to confirm nonunion by showing a persistent fracture line with no bridging bone. Additional tests may evaluate blood supply or infection.

Treatment Options

Treatment may include surgical intervention, such as bone grafting or internal fixation, to promote healing. Non-surgical options like electrical stimulation or bracing may be considered. Pain management and physical therapy are often part of the care plan.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and response to treatment. Follow-up imaging and clinical assessments are necessary to monitor healing. Long-term recovery may require ongoing therapy to restore function and strength.

Complications

• Chronic pain or instability.
• Infection, especially if surgery is performed.
• Nerve or blood vessel damage.
• Delayed return to normal activities.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Maintain a balanced diet rich in calcium and vitamin D to support bone health.
• Follow post-treatment instructions carefully to aid healing.
• Use protective gear during sports or activities to reduce injury risk.

When to Seek Professional Help

Seek immediate care if pain worsens, swelling increases, or new symptoms like numbness or discoloration develop. Follow up with a healthcare provider if healing does not progress as expected.

Tips for Medical Coders

Document the encounter as a subsequent visit for a closed fracture with nonunion. Ensure clinical notes specify the fracture type (transverse, displaced) and the absence of healing. Include details about treatment provided and any imaging results confirming nonunion.