S82.865E Nondisplaced Maisonneuve's fracture of left leg, subsequent encounter for open fracture type I or II with routine healing

Name of the Condition

• Nondisplaced Maisonneuve's fracture of left leg, subsequent encounter for open fracture type I or II with routine healing

Summary

A Maisonneuve's fracture is a specific type of ankle injury involving a proximal fibula fracture combined with a tear of the tibiofibular syndesmosis and often an associated medial malleolus or deltoid ligament injury. The term "nondisplaced" indicates that the fractured bone fragments remain in their normal alignment. This injury typically results from rotational forces applied to the ankle, leading to instability in the ankle joint. The "subsequent encounter" designation specifies this is a follow-up visit for an established injury, while "open fracture type I or II" refers to a break in the skin with minimal contamination or a small wound, respectively. "Routine healing" indicates the fracture is progressing normally without complications.

Causes

The fracture is usually caused by external rotation of the foot, which can occur during activities like twisting the ankle, falls, or sports-related injuries. The rotational force disrupts the syndesmotic ligaments and may cause additional damage to the medial structures of the ankle. Open fractures occur when the broken bone pierces the skin, often due to high-energy trauma or direct impact. Subsequent encounters for healing reflect ongoing care after the initial injury.

Risk Factors

• Participation in activities with high rotational stress on the ankle, such as soccer or basketball.
• Previous ankle injuries or ligamentous instability.
• Improper footwear or uneven terrain increasing fall risk.
• Age-related factors that may affect bone density or ligament integrity.

Symptoms

• Pain and swelling localized to the proximal fibula and ankle.
• Difficulty bearing weight on the affected leg.
• Instability or a feeling of the ankle "giving way."
• Visible wound or skin break if the fracture is open.
• Bruising or discoloration around the injury site.

Diagnosis

Diagnosis typically involves a physical examination to assess pain, swelling, and stability. Imaging studies, such as X-rays, are used to confirm the fracture and assess alignment. CT or MRI may be ordered to evaluate associated ligament or soft tissue damage. The "subsequent encounter" status is determined by the timing of the visit relative to the initial injury, and "routine healing" is confirmed through clinical assessment and imaging showing progressive bone union without complications.

Treatment Options

Treatment focuses on stabilizing the fracture and promoting healing. Non-surgical options include immobilization with a cast or brace, pain management, and weight-bearing restrictions. Surgical intervention may be required for unstable fractures or associated ligament repairs. Follow-up care involves monitoring healing progress, physical therapy to restore function, and wound care for open fractures. Routine healing indicates standard management without additional interventions.

Prognosis and Follow-Up

Prognosis is generally favorable with appropriate treatment, especially for nondisplaced fractures. Routine healing suggests the fracture is progressing as expected, with most patients regaining full function over time. Follow-up visits are scheduled to assess healing, adjust treatment plans, and guide rehabilitation. Long-term outcomes depend on the severity of the initial injury and adherence to treatment recommendations.

Complications

• Delayed healing or nonunion of the fracture.
• Chronic ankle instability or pain.
• Infection, particularly with open fractures.
• Post-traumatic arthritis due to joint damage.
• Nerve or vascular injury in severe cases.

Lifestyle & Prevention

• Wear supportive footwear appropriate for activities.
• Use ankle braces or tape during high-risk sports.
• Improve balance and strength through targeted exercises.
• Avoid uneven surfaces or hazardous environments.
• Seek prompt treatment for ankle injuries to prevent complications.

When to Seek Professional Help

• Increased pain, swelling, or bruising.
• New or worsening instability in the ankle.
• Signs of infection, such as redness, warmth, or drainage.
• Difficulty bearing weight or walking.
• Numbness, tingling, or changes in skin color indicating nerve or vascular issues.

Tips for Medical Coders

Document the fracture type (open I or II), laterality (left leg), and encounter status (subsequent) clearly. Confirm routine healing through clinical notes and imaging. Ensure the code aligns with the specific details of the fracture and associated injuries.