S92.155D Nondisplaced avulsion fracture (chip fracture) of left talus, subsequent encounter for fracture with routine healing

Name of the Condition

• Nondisplaced avulsion fracture (chip fracture) of left talus, subsequent encounter for fracture with routine healing

Summary

A nondisplaced avulsion fracture (chip fracture) of the left 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, and "subsequent encounter for fracture with routine healing" refers to follow-up care during the normal healing phase. This code is used when the fracture is healing as expected without complications.

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 evaluate healing progress. The provider will also review the patient’s medical history and mechanism of injury to determine the appropriate diagnosis and treatment plan.

Treatment Options

Treatment may include rest, ice, compression, and elevation (RICE) to reduce swelling and pain. Immobilization with a cast or brace may be recommended to support healing. Physical therapy is often prescribed to restore strength and range of motion once the fracture begins to heal. Pain management may involve over-the-counter or prescription medications, and follow-up imaging may be used to monitor healing.

Prognosis and Follow-Up

With proper treatment, most nondisplaced avulsion fractures of the talus heal without long-term complications. Follow-up care is important to ensure the fracture is healing as expected. The healthcare provider will determine the frequency of follow-up visits based on the patient’s progress and may adjust treatment plans as needed. Full recovery time varies but generally ranges from several weeks to a few months, depending on the severity of the injury.

Complications

While rare, complications can include nonunion (failure to heal), malunion (healing in an abnormal position), or persistent pain. Infection or nerve damage may also occur, particularly if the fracture was open or required surgical intervention. Early detection and appropriate management can help minimize these risks.

Lifestyle & Prevention

Avoid high-impact activities until cleared by a healthcare provider. Wear supportive footwear and use protective gear during sports or activities with ankle injury risk. Maintain bone health through a balanced diet rich in calcium and vitamin D, and engage in regular weight-bearing exercise to strengthen bones. If you have a history of ankle injuries, consider ankle-strengthening exercises to reduce future risk.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, inability to bear weight, visible deformity, or signs of infection (e.g., redness, warmth, or pus). Contact your healthcare provider if symptoms worsen or do not improve with home care, or if you develop new or unusual symptoms during recovery.

Tips for Medical Coders

This code is specific to a nondisplaced avulsion fracture of the left talus during a subsequent encounter with routine healing. Document the laterality (left), fracture type (nondisplaced avulsion), and healing status (routine) to support accurate coding. Ensure the encounter is classified as "subsequent" and not initial or acute, and confirm that healing is progressing without complications. Documentation should reflect the fracture’s location, mechanism of injury, and any treatment provided during the follow-up visit.