S82.142K Displaced bicondylar fracture of left tibia, subsequent encounter for closed fracture with nonunion

Name of the Condition

• Displaced bicondylar fracture of left tibia, subsequent encounter for closed fracture with nonunion

Summary

A displaced bicondylar fracture of the left tibia refers to a break involving both the lateral and medial condyles of the tibia (shinbone) near the knee joint, where the bone fragments are misaligned. This fracture is classified as a closed fracture with nonunion, meaning the bone has failed to heal properly after an initial injury, and the skin remains intact. The condition affects the weight-bearing surface of the tibia and may impact joint stability and function.

Causes

Common causes include high-energy trauma such as motor vehicle accidents, falls from significant heights, or severe sports injuries that exert force on the knee joint. Penetrating injuries or direct blows to the knee may also result in this fracture. Nonunion can occur due to inadequate immobilization, poor blood supply to the bone, infection, or excessive movement at the fracture site during healing.

Risk Factors

• Participation in high-impact sports or activities with a risk of falls
• Osteoporosis or conditions that weaken bone density
• Advanced age, which may reduce bone strength
• Previous knee injuries or surgeries that compromise joint stability
• Smoking or other factors that impair bone healing

Symptoms

• Intense pain localized to the knee, particularly with weight-bearing
• Swelling, bruising, or tenderness around the knee joint
• Inability to bear weight on the affected leg
• Visible deformity or instability of the knee in severe cases
• Limited range of motion or stiffness
• Persistent pain or discomfort months after the initial injury

Diagnosis

Diagnosis is confirmed through a combination of physical examination and imaging studies. A physical exam assesses pain, swelling, and joint stability. Imaging typically includes X-rays to evaluate fracture alignment and healing, with CT scans or MRI used to assess bone union and soft tissue involvement. Bone scans may also be employed to detect nonunion.

Treatment Options

Treatment focuses on promoting bone healing and restoring function. Options may include surgical intervention, such as internal fixation with plates or screws, bone grafting to stimulate healing, or external fixation devices. Non-surgical approaches, such as prolonged immobilization or electrical stimulation, may be considered in select cases. Physical therapy is often recommended to improve strength and mobility.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, patient health, and treatment adherence. Nonunion may require additional interventions, and recovery can be prolonged. Regular follow-up with imaging is necessary to monitor healing. Long-term outcomes may include persistent pain, arthritis, or reduced mobility, but many patients achieve functional recovery with appropriate care.

Complications

• Persistent nonunion or delayed healing
• Post-traumatic arthritis of the knee joint
• Infection, particularly if surgery is performed
• Nerve or blood vessel damage
• Chronic pain or stiffness
• Reduced range of motion or instability

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider
• Maintain a healthy diet rich in calcium and vitamin D to support bone health
• Quit smoking, as it impairs bone healing
• Use protective equipment during sports or high-risk activities
• Follow post-treatment guidelines for weight-bearing and activity restrictions

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or deformity after an injury. Contact your healthcare provider if you have persistent pain, difficulty bearing weight, or signs of infection (e.g., fever, redness, drainage) following treatment.

Tips for Medical Coders

This code (S82.142K) is used for a displaced bicondylar fracture of the left tibia in a subsequent encounter for a closed fracture with nonunion. Documentation should specify the fracture type, laterality, and the presence of nonunion. Ensure the encounter is classified as "subsequent" and that the fracture is closed (skin intact) with evidence of failed healing.