S82.123N Displaced fracture of lateral condyle of unspecified tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Name of the Condition

Displaced fracture of lateral condyle of unspecified tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Summary

This condition involves a displaced fracture of the lateral condyle of the tibia, a bony prominence on the outer side of the upper tibia that contributes to knee joint stability. The fracture is displaced, meaning the bone fragments are out of their normal alignment. This is a subsequent encounter for an open fracture classified as type IIIA, IIIB, or IIIC, indicating significant soft tissue damage and contamination, and the fracture has failed to heal (nonunion) after previous treatment.

Causes

Traumatic injury to the knee, such as falls, sports-related impacts, or motor vehicle accidents, is the primary cause. Direct force to the lateral knee or twisting injuries can lead to this fracture. The open nature of the fracture suggests the injury penetrated the skin, exposing the bone, and the nonunion indicates inadequate healing despite prior intervention.

Risk Factors

• Participation in high-impact or contact sports.
• Osteoporosis or other bone-weakening conditions.
• Previous knee injuries or surgeries.
• Advanced age, which may reduce bone density.
• Inadequate initial fracture management or infection.

Symptoms

• Persistent pain, swelling, and tenderness localized to the lateral knee.
• Difficulty bearing weight on the affected leg.
• Visible deformity or misalignment of the knee.
• Bruising or discoloration around the injury site.
• Possible drainage or signs of infection at the wound site.

Diagnosis

Physical examination to assess pain, swelling, joint stability, and wound status. Imaging tests, such as X-rays or CT scans, to evaluate fracture type, displacement, and signs of nonunion. Assessment of soft tissue damage and potential infection.

Treatment Options

• Surgical intervention to realign and stabilize the fracture, possibly with bone grafting to promote healing.
• Debridement of infected or nonviable tissue to address open fracture contamination.
• Antibiotic therapy for infection management.
• Immobilization with a cast or brace to support healing.
• Physical therapy to restore function after stabilization.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, soft tissue damage, and response to treatment. Nonunion and open fractures increase recovery time and risk of complications. Regular follow-up with imaging and clinical assessments is necessary to monitor healing and adjust treatment.

Complications

• Infection at the fracture site.
• Persistent nonunion or malunion.
• Joint stiffness or instability.
• Nerve or vascular damage.
• Chronic pain or functional impairment.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Follow prescribed weight-bearing restrictions.
• Maintain good bone health through nutrition and exercise.
• Use protective gear during sports or activities with fall risk.

When to Seek Professional Help

Seek immediate medical attention for worsening pain, swelling, fever, or signs of infection (e.g., redness, drainage). Contact a provider if symptoms persist or worsen despite treatment.

Tips for Medical Coders

Document the fracture type (IIIA, IIIB, or IIIC), nonunion status, and subsequent encounter details. Ensure clinical notes specify the open fracture classification and evidence of failed healing to support coding.