S72.461K Displaced supracondylar fracture with intracondylar extension of lower end of right femur, subsequent encounter for closed fracture with nonunion

Name of the Condition

• Displaced supracondylar fracture with intracondylar extension of lower end of right femur, subsequent encounter for closed fracture with nonunion

Summary

This condition involves a displaced fracture at the distal (lower) end of the right femur, specifically affecting the supracondylar region (above the condyles) with extension into the intracondylar area (within the condyles). The fracture is closed, meaning the skin remains intact, and it is classified as a subsequent encounter, indicating ongoing care for a fracture that has failed to heal (nonunion). The displacement and intracondylar involvement disrupt the knee joint’s structural integrity, potentially impacting stability and function due to the lack of bony union.

Causes

High-impact trauma, such as falls, motor vehicle accidents, or direct force to the thigh. Sports injuries or physical altercations involving the knee. Stress fractures from repetitive overuse or strenuous activity, though less common in this specific pattern.

Risk Factors

• Advanced age, which may lead to decreased bone density.
• Osteoporosis or other bone-weakening conditions.
• Participation in high-risk activities or contact sports.
• Prior history of femur fractures or bone disorders.
• Factors contributing to nonunion, such as poor blood supply, infection, or inadequate immobilization.

Symptoms

• Persistent severe pain in the knee or thigh region.
• Swelling, bruising, or visible deformity of the affected leg.
• Inability to bear weight or move the leg normally.
• Possible numbness or tingling if nerves are involved.
• Lack of healing progress over time, as indicated by nonunion.

Diagnosis

Physical examination to assess pain, swelling, and limb alignment. Imaging studies, such as X-rays or CT scans, to confirm the fracture pattern, displacement, and nonunion status. Evaluation of healing progress through serial imaging to document the absence of bony union.

Treatment Options

Surgical intervention, such as open reduction and internal fixation (ORIF), to realign and stabilize the fracture. Bone grafting or other techniques to promote healing in cases of nonunion. Immobilization with casts or braces to support the limb during recovery. Physical therapy to restore function and strength once healing is underway.

Prognosis and Follow-Up

Prognosis depends on the success of treatment and the patient’s overall health. Nonunion may require additional interventions, such as revision surgery or bone stimulation. Regular follow-up with imaging to monitor healing progress is essential. Long-term outcomes may include residual pain, stiffness, or functional limitations, particularly if the knee joint is affected.

Complications

Delayed or failed healing (nonunion) due to inadequate treatment or poor bone quality. Infection, especially if surgical intervention is required. Nerve or vascular damage from the initial injury or subsequent procedures. Post-traumatic arthritis in the knee joint due to articular surface involvement.

Lifestyle & Prevention

Avoid high-impact activities that risk further injury until cleared by a healthcare provider. Maintain a healthy diet rich in calcium and vitamin D to support bone health. Use protective equipment during sports or high-risk activities. Follow prescribed rehabilitation protocols to optimize healing and function.

When to Seek Professional Help

Persistent or worsening pain, swelling, or deformity. Inability to bear weight or move the leg. Signs of infection, such as fever, redness, or drainage. Numbness, tingling, or changes in sensation in the leg or foot.

Tips for Medical Coders

Document the fracture’s location (supracondylar with intracondylar extension), laterality (right femur), encounter type (subsequent), and healing status (nonunion) to support accurate coding. Include details on the fracture’s displacement and whether it is closed. Ensure documentation reflects the ongoing nature of care for nonunion to justify the subsequent encounter code.