S92.155A Nondisplaced avulsion fracture (chip fracture) of left talus, initial encounter for closed fracture

Name of the Condition

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

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 "closed fracture" means the skin is intact. This is the initial encounter for the injury.

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 range of motion. Imaging studies, such as X-rays or CT scans, are typically used to confirm the fracture and determine if it is nondisplaced. The provider will also evaluate for associated injuries to the surrounding structures.

Treatment Options

Treatment may include immobilization with a cast or brace to allow healing, pain management with medications, and activity modification. Physical therapy may be recommended to restore strength and mobility once the fracture has healed. In some cases, surgical intervention may be considered if the fragment is large or unstable.

Prognosis and Follow-Up

Most nondisplaced avulsion fractures of the talus heal well with conservative treatment. Recovery time varies but typically ranges from 6 to 8 weeks. Follow-up appointments are important to monitor healing and adjust treatment as needed. Long-term outcomes depend on the size and location of the fracture and adherence to rehabilitation.

Complications

Potential complications include delayed healing, nonunion (failure to heal), or malunion (healing in an abnormal position). There is also a risk of post-traumatic arthritis in the ankle joint, especially if the fracture affects joint surfaces. Nerve or blood vessel damage is rare but possible.

Lifestyle & Prevention

Avoid high-impact activities until cleared by a healthcare provider. Wear appropriate footwear and protective gear during sports. Strengthening exercises for the ankle and lower leg may help prevent future injuries. Maintain a healthy diet to support bone health.

When to Seek Professional Help

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

Tips for Medical Coders

This code represents a nondisplaced avulsion fracture of the left talus, initial encounter for a closed fracture. Documentation should specify the location (left talus), fracture type (nondisplaced avulsion), and encounter type (initial for closed fracture). Ensure the record includes details about the injury mechanism, imaging findings, and treatment plan to support accurate coding.