S92.332K Displaced fracture of third metatarsal bone, left foot, subsequent encounter for fracture with nonunion

Name of the Condition

• Displaced fracture of third metatarsal bone, left foot, subsequent encounter for fracture with nonunion.

Summary

This condition describes a displaced fracture of the third metatarsal bone in the left foot where the bone fragments have shifted out of alignment, and the fracture has failed to heal properly (nonunion) during a subsequent encounter for treatment. Nonunion indicates the fracture site has not fused after an expected healing period, requiring further medical management.

Causes

The fracture typically results from initial trauma, such as a fall, sports injury, or direct impact to the left foot. Nonunion may develop due to inadequate immobilization, poor blood supply to the bone, infection, or excessive movement at the fracture site before healing is complete.

Risk Factors

• High-impact activities or repetitive stress on the foot (e.g., running, jumping)
• Smoking, which impairs bone healing
• Conditions affecting bone health (e.g., diabetes, osteoporosis)
• Advanced age, which may reduce bone density and healing capacity
• Previous fractures or surgeries in the same area

Symptoms

• Persistent pain, swelling, or tenderness in the midfoot region of the left foot
• Difficulty bearing weight or walking on the affected foot
• Visible deformity or instability at the fracture site
• Possible clicking or grinding sensation with movement

Diagnosis

A healthcare provider will assess symptoms and perform a physical examination to evaluate tenderness, swelling, and range of motion. Imaging tests, such as X-rays or CT scans, are used to confirm nonunion by showing a persistent gap or lack of bone healing at the fracture site.

Treatment Options

Treatment may include immobilization with a cast or boot to stabilize the fracture, pain management, and physical therapy to restore function. Surgical options, such as bone grafting or internal fixation, may be considered for severe nonunion to promote healing.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and response to treatment. Regular follow-up with imaging is necessary to monitor healing progress. Most patients can return to normal activities with proper care, though recovery may take several months.

Complications

• Chronic pain or instability in the foot
• Arthritis or joint damage due to improper healing
• Infection, particularly if surgery is required
• Long-term mobility limitations

Lifestyle & Prevention

• Wear supportive footwear to reduce stress on the foot
• Avoid high-impact activities until cleared by a healthcare provider
• Maintain a healthy diet rich in calcium and vitamin D to support bone health
• Follow post-treatment instructions carefully to optimize healing

When to Seek Professional Help

Seek medical attention if pain worsens, swelling increases, or there are signs of infection (e.g., redness, fever). Persistent difficulty walking or new deformity also warrants prompt evaluation.

Tips for Medical Coders

Document the subsequent encounter for fracture with nonunion, including clinical notes confirming the lack of bone healing and any treatments provided. Ensure the left foot and third metatarsal bone are clearly specified, and note the nonunion status to support accurate coding.