S82.464R Nondisplaced segmental fracture of shaft of right fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion

Name of the Condition

• Nondisplaced segmental fracture of shaft of right fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion
• ICD-10 Code: S82.464R

Summary

A nondisplaced segmental fracture of the shaft of the right fibula is a break in the long, thin bone of the lower leg involving two separate fracture sites along the same bone segment, with the fragments remaining in alignment. This injury is classified as an open fracture type IIIA, IIIB, or IIIC, indicating significant soft tissue damage and contamination. The "subsequent encounter" designation applies to follow-up care after the initial treatment, and "malunion" refers to improper healing where the bone fragments have not aligned correctly.

Causes

Most commonly caused by high-energy trauma, such as motor vehicle accidents, falls from significant height, or direct impact to the leg. Twisting injuries or severe rotational forces can also lead to this type of fracture. Open fractures may result from the trauma piercing the skin or from a pre-existing wound becoming contaminated. Malunion can occur if the initial fracture was not properly aligned or if healing was compromised.

Risk Factors

• Participation in high-impact sports or activities with risk of falls.
• Osteoporosis or reduced bone density, which increases fragility.
• Advanced age, which may weaken bone strength.
• Previous leg injuries or surgeries that compromise bone integrity.
• Exposure to environments with increased risk of trauma (e.g., construction sites).
• Inadequate initial fracture management or non-compliance with treatment.

Symptoms

• Intense 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.
• Numbness or tingling if nerve involvement occurs.
• Visible wound or open area if the fracture is open.
• Signs of malunion, such as persistent pain or abnormal alignment.

Diagnosis

Diagnosis involves a physical examination by a healthcare professional to assess tenderness, swelling, and deformity. Imaging studies, such as X-rays or CT scans, are used to confirm the fracture type, assess alignment, and identify malunion. The open fracture classification (IIIA, IIIB, or IIIC) is determined by the extent of soft tissue damage and contamination. Follow-up imaging may be required to evaluate healing progress.

Treatment Options

Treatment focuses on managing the open fracture and addressing malunion. This may include wound care, antibiotics to prevent infection, and possible surgical intervention to realign the bone or stabilize the fracture. Physical therapy is often recommended to restore function and strength. Pain management and monitoring for complications are also key components of care.

Prognosis and Follow-Up

Prognosis depends on the severity of the initial injury, the success of treatment, and the extent of malunion. Follow-up care is essential to monitor healing, address complications, and adjust treatment as needed. Long-term outcomes may include persistent pain, reduced mobility, or the need for additional procedures to correct malunion.

Complications

• Infection, particularly with open fractures.
• Nerve or vascular damage due to the injury or malunion.
• Chronic pain or instability.
• Delayed or nonunion of the fracture.
• Long-term mobility issues or gait abnormalities.

Lifestyle & Prevention

• Avoid high-risk activities or use protective gear when participating in sports.
• Maintain bone health through a balanced diet and regular exercise.
• Ensure proper fracture management to reduce the risk of malunion.
• Follow post-injury care instructions to support healing.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or an open wound after a leg injury. Follow up with a healthcare provider if you notice persistent pain, deformity, or signs of infection during recovery.

Tips for Medical Coders

Document the fracture type (IIIA, IIIB, or IIIC) and the presence of malunion clearly. The "subsequent encounter" code applies to follow-up care after the initial treatment phase. Ensure alignment with clinical notes to support the open fracture classification and malunion diagnosis.