S82.466N Nondisplaced segmental fracture of shaft of unspecified fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Name of the Condition

• Nondisplaced segmental fracture of shaft of unspecified fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion
• ICD-10 Code: S82.466N

Summary

A nondisplaced segmental fracture of the shaft of the unspecified 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 bone fragments remaining in their normal alignment. This type of fracture is classified as an open fracture type IIIA, IIIB, or IIIC, meaning the overlying skin is breached with significant soft tissue damage, and the fracture has failed to heal (nonunion) during a subsequent encounter for treatment.

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 compromised and healing is impaired.

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.
• Infection at the fracture site, contributing to nonunion.

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.
• Persistent pain or lack of healing progress indicating nonunion.

Diagnosis

Diagnosis involves a thorough clinical evaluation, including a detailed patient history of the injury and previous treatments. Physical examination assesses pain, swelling, and functional limitations. Imaging studies, such as X-rays, CT scans, or MRIs, are used to confirm the fracture type, assess alignment, and identify nonunion or soft tissue damage. Additional tests may be performed to evaluate for infection or poor blood supply.

Treatment Options

Treatment focuses on promoting healing and addressing the open fracture and nonunion. Options may include surgical intervention to stabilize the fracture, such as internal or external fixation, and procedures to address soft tissue damage or infection. Non-surgical approaches, such as immobilization with a cast or brace, may be used in select cases. Physical therapy is often recommended to restore function and strength.

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 recovery can be prolonged. Regular follow-up appointments are necessary to monitor healing, assess for complications, and adjust treatment plans as needed. Long-term outcomes may include residual pain or functional limitations.

Complications

• Infection at the fracture site or surgical site.
• Delayed or failed healing (nonunion).
• Nerve or blood vessel damage.
• Chronic pain or instability.
• Limited mobility or functional impairment.
• Need for additional surgeries.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Follow prescribed rehabilitation plans to restore strength and mobility.
• Maintain a healthy 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 pain, swelling, or deformity after an injury. Contact your healthcare provider if you notice signs of infection (e.g., redness, warmth, pus), persistent pain, or if the fracture does not appear to be healing as expected.

Tips for Medical Coders

Document the fracture type (IIIA, IIIB, or IIIC) and the presence of nonunion clearly. Specify the encounter as "subsequent" and note any relevant details about the open fracture or healing status. Ensure documentation supports the use of this code and aligns with clinical findings.