S82.424M Nondisplaced transverse fracture of shaft of right fibula, subsequent encounter for open fracture type I or II with nonunion

Name of the Condition

• Nondisplaced transverse fracture of shaft of right fibula, subsequent encounter for open fracture type I or II with nonunion
• ICD-10 Code: S82.424M

Summary

A nondisplaced transverse fracture of the shaft of the right fibula is a break in the long, thin bone on the lateral side of the lower leg, where the fracture line runs horizontally across the middle portion of the bone. The bone fragments remain in their normal anatomical alignment. This code applies to a subsequent encounter, meaning the patient is being seen for follow-up care after the initial injury. The fracture is classified as open type I or II, indicating a break in the skin with minimal to moderate contamination, and the condition includes nonunion, where the bone has failed to heal properly.

Causes

Most commonly caused by direct trauma or high-impact forces to the leg, such as falls, sports injuries, or motor vehicle accidents. Open fractures occur when the broken bone pierces the skin or when external force causes a wound that communicates with the fracture site. Nonunion may result from inadequate immobilization, poor blood supply, infection, or excessive movement at the fracture site during healing.

Risk Factors

• Participation in contact sports or high-impact activities.
• Osteoporosis or reduced bone density, which increases fragility.
• Advanced age, which may weaken bone strength.
• Previous leg injuries or surgeries.
• Situations with a high risk of skin penetration, such as falls onto sharp objects.
• Factors that impair healing, such as smoking, diabetes, or nutritional deficiencies.

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 wound or scar from the open fracture (if present).
• Delayed healing or lack of progress in recovery.

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, evaluate alignment, and assess for nonunion. Additional tests, like CT scans or MRIs, may be ordered to evaluate bone healing or detect complications. The classification of the open fracture (type I or II) is based on the size and contamination of the wound.

Treatment Options

Treatment focuses on promoting bone healing and managing the open fracture. This may include immobilization with a cast or brace, surgical intervention to stabilize the fracture (e.g., internal fixation), wound care to prevent infection, and addressing nonunion with bone grafting or other procedures. Antibiotics may be prescribed for open fractures to reduce infection risk. Physical therapy is often recommended to restore function and strength.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, the presence of nonunion, and the effectiveness of treatment. Nonunion may require additional interventions, and recovery time is typically longer than for fractures that heal normally. Regular follow-up appointments are necessary to monitor healing progress, adjust treatment plans, and address any complications. Full recovery may take several months, and some patients may experience long-term functional limitations.

Complications

• Nonunion or delayed healing of the fracture.
• Infection at the fracture site or wound.
• Nerve or blood vessel damage.
• Chronic pain or instability in the leg.
• Limited mobility or functional impairment.
• Need for additional surgeries to address complications.

Lifestyle & Prevention

• Avoid high-impact activities or contact sports until cleared by a healthcare provider.
• Use protective equipment, such as shin guards, during sports.
• Maintain a healthy diet rich in calcium and vitamin D to support bone health.
• Quit smoking, as it impairs bone healing.
• Follow post-injury care instructions, including immobilization and physical therapy, to promote proper healing.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or deformity in the leg, or if the wound from the open fracture shows signs of infection (e.g., redness, pus, fever). Contact your healthcare provider if you notice delayed healing, persistent pain, or new symptoms during follow-up care.

Tips for Medical Coders

This code is specific to a subsequent encounter for an open fracture type I or II of the right fibula with nonunion. Document the encounter type (subsequent), fracture type (open I or II), and the presence of nonunion clearly. Ensure the laterality (right fibula) and fracture characteristics (nondisplaced transverse) are accurately recorded. Verify that the fracture is not displaced and that the nonunion is confirmed through imaging or clinical assessment.