S82.465M Nondisplaced segmental fracture of shaft of left fibula, subsequent encounter for open fracture type I or II with nonunion

Name of the Condition

• Nondisplaced segmental fracture of shaft of left fibula, subsequent encounter for open fracture type I or II with nonunion
• ICD-10 Code: S82.465M

Summary

A nondisplaced segmental fracture of the shaft of the left fibula is a break in the long, thin bone of the lower leg, involving two separate fracture sites along the same segment without misalignment of the fragments. This injury is classified as an open fracture type I or II, meaning the overlying skin is compromised but the wound is typically small and clean. The fracture affects the middle portion of the fibula and is documented during a subsequent encounter, indicating ongoing care for a nonunion, where 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. Twisting injuries or severe rotational forces can also lead to this type of fracture, particularly when the skin is breached during the incident. Nonunion may result from inadequate immobilization, poor blood supply to the bone, 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 poor nutrition, which can impair bone 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.
• Numbness or tingling if nerve involvement occurs.
• Signs of nonunion, such as lack of healing progress on imaging.

Diagnosis

Diagnosis involves a physical examination by a healthcare provider, along with imaging studies such as X-rays or CT scans to assess the fracture site and confirm nonunion. The open fracture type (I or II) is determined by the size and cleanliness of the wound. Additional tests, like blood work or bone scans, may be used to evaluate healing potential or rule out infection.

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 and encourage union. Antibiotics may be prescribed if infection is present. Physical therapy is often recommended to restore strength and mobility once healing progresses.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and the effectiveness of treatment. With proper intervention, many patients achieve successful healing, though recovery may take several months. Regular follow-up appointments and imaging are necessary to monitor progress and adjust treatment as needed.

Complications

• Chronic pain or instability in the leg.
• Infection at the fracture site.
• Nerve or vascular damage.
• Delayed or failed healing (nonunion).
• Long-term mobility issues or arthritis.

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.
• Quit smoking, as it impairs healing.
• Use protective gear during sports or activities with fall risks.
• Follow post-treatment instructions carefully to optimize healing.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or deformity in the leg, or if you notice signs of infection (e.g., redness, warmth, or pus). Contact your provider if symptoms worsen or do not improve with treatment, or if you have concerns about healing progress.

Tips for Medical Coders

Document the fracture type (open I or II) and the presence of nonunion clearly in the medical record. Ensure the encounter is coded as "subsequent" to reflect ongoing care for the nonunion. Include details about the fracture's location (left fibula) and the absence of displacement to support accurate coding.