S82.462N Displaced segmental fracture of shaft of left fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Name of the Condition

• Displaced segmental fracture of shaft of left fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion
• ICD-10 Code: S82.462N

Summary

A displaced segmental fracture of the shaft of the left fibula is a break in the long, thin bone on the lateral side of the lower leg, where the bone is broken into two or more separate pieces and the fragments are out of alignment. This injury involves the middle portion of the fibula and is classified as an open fracture (type IIIA, IIIB, or IIIC), meaning the skin is broken and the wound is severe. The term "subsequent encounter" indicates this is a follow-up visit for treatment of the fracture, and "nonunion" means the bone has failed to heal properly after an extended period.

Causes

Most commonly caused by high-energy trauma, such as motor vehicle accidents, falls from significant height, or direct impact to the leg. Severe twisting injuries or rotational forces can also lead to this type of fracture. Open fractures may result from trauma that penetrates the skin, increasing the risk of infection and complicating 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.
• Poor blood supply to the fracture site, which can hinder healing.

Symptoms

• Persistent pain and swelling in the lower leg, even after initial treatment.
• Difficulty bearing weight on the affected leg.
• Bruising or tenderness around the injured area.
• Possible deformity or instability of the leg structure.
• Signs of nonunion, such as lack of healing progress on imaging tests.

Diagnosis

Diagnosis involves a physical examination by a healthcare professional to assess tenderness, swelling, and deformity. Imaging tests, such as X-rays or CT scans, are typically used to confirm the fracture, evaluate alignment, and assess for nonunion. Additional tests, like blood work, may be performed to check for infection or other complications.

Treatment Options

Treatment focuses on promoting bone healing and addressing complications. Options may include surgical intervention, such as bone grafting or internal fixation, to stabilize the fracture and encourage union. Antibiotics may be prescribed if infection is present. Physical therapy is often recommended to restore function and strength once healing progresses.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, the success of treatment, and the patient’s overall health. Nonunion fractures may require extended treatment and monitoring. Regular follow-up appointments are necessary to assess healing and adjust treatment plans. Full recovery can take several months, and some patients may experience long-term functional limitations.

Complications

• Nonunion or delayed healing of the fracture.
• Infection, particularly with open fractures.
• Nerve or blood vessel damage.
• Chronic pain or instability in the leg.
• Post-traumatic arthritis or deformity.

Lifestyle & Prevention

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

When to Seek Professional Help

Seek immediate medical attention if you experience:

• Severe or worsening pain.
• Increased swelling, redness, or drainage from the wound.
• Signs of infection, such as fever or chills.
• Numbness or tingling in the leg or foot.
• Difficulty moving the leg or bearing weight.

Tips for Medical Coders

When coding S82.462N, ensure documentation specifies:

• The fracture is segmental and displaced.
• The encounter is subsequent (not initial or acute).
• The open fracture type (IIIA, IIIB, or IIIC).
• The presence of nonunion, with evidence of failed healing over time. Accurate documentation of the fracture type, encounter stage, and nonunion status is critical for correct code assignment.