S82.122M Displaced fracture of lateral condyle of left tibia, subsequent encounter for open fracture type I or II with nonunion

Name of the Condition

Displaced fracture of lateral condyle of left tibia, subsequent encounter for open fracture type I or II with nonunion

Summary

This condition involves a displaced fracture of the lateral condyle of the left tibia, a bony prominence on the outer side of the upper tibia that contributes to knee joint stability. The fracture is open (type I or II), meaning the skin is breached, and this is a subsequent encounter for treatment. Nonunion indicates the fracture has failed to heal properly, requiring ongoing management. Displacement means the bone fragments remain out of their normal alignment.

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, resulting in both bone displacement and skin penetration. Nonunion may develop due to inadequate initial treatment, poor blood supply, infection, or excessive movement at the fracture site.

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.
• Poor initial fracture management or noncompliance with treatment.

Symptoms

• Persistent pain, swelling, and tenderness localized to the lateral knee.
• Difficulty bearing weight on the affected leg.
• Visible deformity or misalignment.
• Bruising or discoloration around the injury site.
• Open wound at the fracture site (type I or II open fracture).
• Possible instability or limited range of motion in the knee.

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, nonunion, and joint involvement. Assessment of the open wound to determine type (I or II) and rule out infection.

Treatment Options

• Surgical intervention to realign and stabilize the fracture, often with bone grafting to promote healing.
• Immobilization with a cast or brace to protect the fracture site.
• Antibiotics or wound care to manage the open fracture and prevent infection.
• Physical therapy to restore function and strength once healing progresses.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, success of treatment, and patient compliance. Nonunion may require additional interventions, such as revision surgery. Regular follow-up with imaging is necessary to monitor healing. Long-term outcomes may include persistent pain, stiffness, or arthritis.

Complications

• Infection at the fracture site.
• Chronic pain or instability.
• Delayed union or nonunion (if not already present).
• Post-traumatic arthritis.
• Nerve or vascular damage.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use protective gear during sports or high-risk activities.
• Maintain bone health with adequate nutrition (e.g., calcium, vitamin D) and exercise.
• Follow post-treatment instructions to optimize healing.

When to Seek Professional Help

Seek immediate care for increased pain, swelling, redness, or drainage from the wound, as these may indicate infection. Contact a provider if there is new deformity, inability to bear weight, or worsening symptoms.

Tips for Medical Coders

Document the laterality (left tibia), fracture type (displaced), encounter type (subsequent), open fracture classification (type I or II), and nonunion status. Ensure clinical notes specify the fracture’s alignment, wound characteristics, and healing progress to support accurate coding.