S82.402M Unspecified fracture of shaft of left fibula, subsequent encounter for open fracture type I or II with nonunion

Name of the Condition

• Unspecified fracture of shaft of left fibula, subsequent encounter for open fracture type I or II with nonunion
• ICD-10 Code: S82.402M

Summary

This condition describes a fracture of the middle portion of the left fibula, the smaller bone in the lower leg. It is an open fracture (type I or II), meaning the bone is broken and the skin is pierced with minimal to moderate soft tissue damage. The term "nonunion" indicates the fracture has not healed properly after an expected time. This is a subsequent encounter, meaning the patient is receiving care for this injury after the initial treatment phase.

Causes

Most commonly caused by direct trauma or impact to the outside of the leg, such as from falls, sports injuries, or accidents. Nonunion may result from inadequate immobilization, poor blood supply to the bone, infection, or severe initial injury.

Risk Factors

• Participation in contact sports or high-impact activities.
• High-risk occupations or activities increasing fall or impact likelihood.
• Osteoporosis or reduced bone density, which impairs healing.
• Advanced age, which may weaken bone strength and healing capacity.
• Smoking or poor nutrition, which can hinder bone repair.

Symptoms

• Persistent pain, swelling, or tenderness in the lower leg.
• Difficulty bearing weight on the leg.
• Bruising or visible wound at the injury site (from the open fracture).
• Possible deformity or instability of the leg structure.
• Lack of healing progress over time (nonunion).

Diagnosis

Physical examination by a healthcare professional, followed by imaging tests such as X-rays, to assess fracture alignment and healing. Additional assessments may evaluate soft tissue damage, infection, or blood supply. CT or MRI scans may be used to confirm nonunion.

Treatment Options

• Surgical intervention to realign and stabilize the fracture (e.g., internal fixation with plates or screws).
• Bone grafting to promote healing in cases of nonunion.
• Antibiotics if infection is present.
• Immobilization with a cast or brace to support healing.
• Physical therapy to restore strength and mobility after healing.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, treatment success, and patient factors. Nonunion may require extended recovery. Regular follow-up with imaging is necessary to monitor healing. Physical therapy is often needed to regain function.

Complications

• Infection at the fracture site.
• Nerve or blood vessel damage.
• Chronic pain or arthritis.
• Persistent nonunion requiring additional surgery.
• Leg length discrepancy or deformity.

Lifestyle & Prevention

• Avoid high-impact activities until fully healed.
• Maintain a balanced diet rich in calcium and vitamin D to support bone health.
• Use protective gear during sports or high-risk activities.
• Follow post-treatment instructions carefully to promote healing.

When to Seek Professional Help

Seek immediate care if you experience severe pain, swelling, visible bone, or inability to bear weight. Contact a healthcare provider if symptoms worsen or do not improve with treatment, or if you notice signs of infection (e.g., redness, pus, fever).

Tips for Medical Coders

Document the fracture type (open I or II), nonunion status, and subsequent encounter details. Ensure clinical notes specify the fracture location (shaft of left fibula) and lack of healing. Code S82.402M is appropriate for this scenario.