S82.463M Displaced segmental fracture of shaft of unspecified fibula, subsequent encounter for open fracture type I or II with nonunion

Name of the Condition

• Displaced segmental fracture of shaft of unspecified fibula, subsequent encounter for open fracture type I or II with nonunion
• ICD-10 Code: S82.463M

Summary

A displaced segmental fracture of the shaft of the unspecified fibula is a break in the long, thin bone of the lower leg, where the bone is fractured into two or more separate pieces with the fragments out of alignment. This injury involves the middle portion of the fibula and is classified as an open fracture (type I or II), meaning the skin is breached but the wound is typically small and clean. The term "subsequent encounter" indicates this is a follow-up visit for the fracture, and "nonunion" refers to the failure of the bone to heal properly after an expected time frame.

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 same mechanisms, with the bone piercing the skin or the trauma causing an external wound. Nonunion can occur due to inadequate immobilization, poor blood supply, infection, or other factors that impede healing.

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.
• Smoking or other factors that impair bone 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.
• Visible or palpable gap at the fracture site (if nonunion is present).

Diagnosis

Diagnosis involves a physical examination by a healthcare professional to assess tenderness, swelling, and deformity. Imaging tests, such as X-rays, are typically used to confirm the fracture, determine its extent, and evaluate for nonunion. Additional tests, like CT scans or bone scans, may be ordered to assess bone healing and blood supply.

Treatment Options

Treatment focuses on promoting bone healing and addressing the nonunion. Options may include surgical intervention, such as bone grafting or internal fixation, to stabilize the fracture. Non-surgical approaches, like external fixation or electrical stimulation, may also be considered. Open fractures require wound care to prevent infection, and antibiotics may be prescribed if infection is present.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, the success of treatment, and the patient's overall health. Nonunion may require additional interventions, and healing can take several months. Regular follow-up appointments are necessary to monitor progress, assess healing, and adjust treatment as needed. Physical therapy may be recommended to restore function and strength.

Complications

• Infection at the fracture site or wound.
• Nerve or blood vessel damage.
• Chronic pain or instability.
• Delayed or failed healing (nonunion).
• Arthritis or other long-term joint issues.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Follow prescribed weight-bearing restrictions.
• Maintain a healthy diet rich in calcium and vitamin D to support bone health.
• Quit smoking, as it impairs bone healing.
• Use protective equipment during sports or activities with fall risks.

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 you notice increased pain, redness, or drainage from the wound, or if the fracture does not appear to be healing as expected.

Tips for Medical Coders

When coding S82.463M, ensure documentation supports the following: a displaced segmental fracture of the fibula shaft, an open fracture type I or II, a subsequent encounter (not initial), and nonunion. Verify that the fracture is unspecified (side not documented) and that the encounter is for follow-up care of the nonunion. Documentation should clearly indicate the fracture type, encounter stage, and healing status to support accurate coding.