S92.154A Nondisplaced avulsion fracture (chip fracture) of right talus, initial encounter for closed fracture

Name of the Condition

• Nondisplaced avulsion fracture (chip fracture) of right talus, initial encounter for closed fracture

Summary

A nondisplaced avulsion fracture (chip fracture) of the right talus is a type of fracture where a small piece of bone is pulled away from the talus, typically due to ligament or tendon attachment. This injury involves trauma to the ankle joint and may affect mobility and weight-bearing ability, depending on the size and location of the avulsed fragment. The term "nondisplaced" indicates the bone fragment remains in its original position, which can influence treatment and recovery. The "initial encounter for closed fracture" specifies this is the first visit for a fracture without an open wound.

Causes

Direct trauma to the ankle, such as falls, sports injuries, or motor vehicle accidents, is the most common cause. High-impact forces or twisting motions can also lead to avulsion fractures, particularly in activities involving sudden stops or changes in direction. The fracture occurs when a ligament or tendon pulls a small bone fragment from the talus.

Risk Factors

• Participation in high-impact sports (e.g., basketball, soccer) or activities with a risk of ankle injury.
• Osteoporosis or other conditions that weaken bone density.
• Previous ankle or talus injuries.
• Improper footwear or inadequate protective gear during physical activities.

Symptoms

• Sudden, severe pain in the ankle or foot.
• Swelling and bruising around the injury site.
• Difficulty bearing weight or walking.
• Limited range of motion in the ankle joint.
• Possible deformity or abnormal positioning of the foot.

Diagnosis

A healthcare provider will perform a physical examination to assess pain, swelling, and mobility. Imaging studies, such as X-rays or CT scans, are typically used to confirm the fracture and determine if it is displaced. The provider will also evaluate the surrounding soft tissues and joint alignment to rule out additional injuries.

Treatment Options

Treatment depends on the size and location of the fracture. Nondisplaced fractures often heal with immobilization, such as a cast or brace, and rest. Pain management may include over-the-counter or prescription medications. Physical therapy is commonly recommended to restore strength and mobility once healing progresses. In rare cases, surgery may be needed if the fragment is large or affects joint stability.

Prognosis and Follow-Up

Most nondisplaced avulsion fractures of the talus heal well with proper treatment and adherence to activity restrictions. Recovery time varies but typically ranges from several weeks to a few months. Follow-up appointments are important to monitor healing and adjust treatment as needed. Full return to activities, including sports, should only occur after clearance by a healthcare provider.

Complications

Potential complications include delayed healing, nonunion (failure to heal), or chronic pain. There is also a risk of arthritis in the ankle joint if the fracture affects joint surfaces. Infection is rare but possible if surgery is required. Nerve or blood vessel damage near the injury site may occur but is uncommon.

Lifestyle & Prevention

• Wear appropriate footwear and protective gear during high-risk activities.
• Strengthen ankle muscles through exercises to improve stability.
• Avoid sudden, high-impact movements that strain the ankle.
• Maintain bone health with a balanced diet and regular exercise to reduce fracture risk.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, inability to bear weight, or visible deformity after an ankle injury. Contact a healthcare provider if symptoms worsen or do not improve with initial care, or if you develop new symptoms like increased swelling, redness, or fever.

Tips for Medical Coders

Document the fracture as nondisplaced, specify the right talus, and confirm it is an initial encounter for a closed fracture. Ensure clinical notes include details about the fracture type, location, and absence of displacement to support accurate coding. Verify that the encounter is for the initial treatment of the closed fracture, as subsequent visits would use different codes.