S93.412S Sprain of calcaneofibular ligament of left ankle, sequela

Name of the Condition

• Common Name: Left ankle sprain (sequela)
• Medical Term: Sprain of calcaneofibular ligament of left ankle, sequela

Summary

A sequela of a sprain of the calcaneofibular ligament of the left ankle refers to the residual effects or chronic condition resulting from a previous injury to this ligament. This occurs when the ligament, which connects the calcaneus (heel bone) to the fibula (lower leg bone), was previously stretched, torn, or damaged, leading to ongoing symptoms or structural changes in the left ankle.

Causes

This condition arises from a prior acute injury to the calcaneofibular ligament of the left ankle, such as a sprain caused by a sudden twist, roll, or trauma. Incomplete healing, repeated stress, or inadequate rehabilitation of the initial injury can contribute to the development of long-term effects.

Risk Factors

• Previous history of left ankle sprains or ligament injuries
• Insufficient rehabilitation following an acute ankle injury
• Activities that place repetitive stress on the left ankle (e.g., sports, uneven terrain)
• Underlying joint instability or anatomical variations in the left ankle

Symptoms

• Persistent pain or discomfort along the outer left ankle
• Chronic swelling or stiffness in the left ankle joint
• Reduced range of motion or instability in the left ankle
• Difficulty bearing weight on the left foot during activity
• Occasional episodes of the ankle "giving way"

Diagnosis

Diagnosis involves a detailed patient history to confirm a prior injury, followed by a physical examination to assess stability, pain, and functional limitations of the left ankle. Imaging studies, such as X-rays or MRI, may be used to evaluate residual ligament damage or associated joint changes.

Treatment Options

Treatment focuses on managing symptoms and improving function, which may include physical therapy to strengthen the ankle and improve stability, bracing or orthotics for support, pain management, and activity modification. In some cases, surgical intervention may be considered for severe instability.

Prognosis and Follow-Up

Prognosis varies depending on the severity of the initial injury and adherence to rehabilitation. Most patients experience improved function with appropriate treatment, though some may have persistent mild symptoms. Regular follow-up with a healthcare provider is recommended to monitor progress and adjust management as needed.

Complications

Potential complications include chronic ankle instability, recurrent sprains, arthritis in the left ankle joint, or persistent pain that impacts daily activities. Nerve irritation or soft tissue scarring may also occur.

Lifestyle & Prevention

• Engage in targeted exercises to strengthen the ankle and improve balance
• Wear supportive footwear appropriate for activities
• Avoid high-risk movements or surfaces that could re-injure the left ankle
• Use ankle braces during sports or activities with a fall risk

When to Seek Professional Help

Seek medical attention if symptoms worsen, new pain or swelling develops, or if there is difficulty bearing weight on the left foot. Prompt evaluation is also recommended for recurrent instability or if conservative measures fail to improve function.

Tips for Medical Coders

Use this code for sequela (residual effects) of a sprain of the calcaneofibular ligament of the left ankle. Document the relationship to the prior injury and any chronic symptoms or functional limitations. Ensure the laterality (left ankle) and sequela status are clearly supported in the medical record.