S92.336K Nondisplaced fracture of third metatarsal bone, unspecified foot, subsequent encounter for fracture with nonunion

Name of the Condition

• Nondisplaced fracture of third metatarsal bone, unspecified foot, subsequent encounter for fracture with nonunion.

Summary

This condition involves a break in the third metatarsal bone of the foot where the bone fragments remain in their normal alignment, but the fracture has failed to heal properly (nonunion). It is classified as a subsequent encounter, indicating ongoing care for the fracture after the initial treatment phase. The term "unspecified foot" means the documentation does not specify whether the injury is in the left or right foot.

Causes

The fracture typically results from direct trauma to the foot, such as a heavy object falling or a twisting injury. Nonunion may occur due to inadequate immobilization, poor blood supply to the bone, infection, or excessive movement during healing.

Risk Factors

• Participation in high-impact sports (e.g., basketball, soccer)
• Wearing improper or non-supportive footwear
• Conditions that weaken bones, such as osteoporosis
• Advanced age, which may reduce bone density
• Previous foot injuries or fractures
• Smoking, which impairs bone healing

Symptoms

• Persistent pain, swelling, or tenderness in the midfoot region
• Difficulty bearing weight or walking on the affected foot
• Bruising or discoloration around the area
• Possible clicking or grinding sensation with movement

Diagnosis

A healthcare provider will perform a physical examination to assess pain, swelling, and range of motion. Imaging tests, such as X-rays or CT scans, are typically used to confirm the fracture and evaluate for nonunion. Additional tests, like bone scans, may be ordered to assess bone healing.

Treatment Options

• Surgical intervention, such as bone grafting or internal fixation, to promote healing
• Extended immobilization with a cast or brace
• Pain management with medications
• Physical therapy to restore strength and mobility
• Lifestyle modifications to reduce stress on the foot

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and the effectiveness of treatment. Regular follow-up appointments are necessary to monitor healing progress. Full recovery may take several months, and some patients may experience long-term limitations in foot function.

Complications

• Chronic pain or discomfort
• Persistent difficulty walking or bearing weight
• Increased risk of future fractures
• Infection, particularly if surgery is required
• Arthritis in the affected joint

Lifestyle & Prevention

• Wear supportive, properly fitting footwear
• Avoid high-impact activities until cleared by a healthcare provider
• Maintain a healthy diet rich in calcium and vitamin D to support bone health
• Quit smoking to improve bone healing
• Use protective gear during sports or activities with foot trauma risk

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or inability to bear weight, or if you notice an open wound near the fracture site. Contact your healthcare provider if symptoms worsen or do not improve with treatment.

Tips for Medical Coders

Document the encounter as a subsequent visit for fracture with nonunion. Ensure the record specifies the fracture is nondisplaced and involves the third metatarsal bone of an unspecified foot. Include details about the nonunion, such as imaging findings or clinical assessment, to support the code.