S72.462N Displaced supracondylar fracture with intracondylar extension of lower end of left femur, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Name of the Condition

• Displaced supracondylar fracture with intracondylar extension of lower end of left femur, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Summary

This condition involves a displaced fracture at the distal (lower) end of the left femur, specifically affecting the supracondylar region (above the condyles) with extension into the intracondylar area (within the condyles). The fracture is classified as a subsequent encounter, indicating ongoing care for an established injury. The open fracture type IIIA, IIIB, or IIIC classification denotes a break in the skin with significant contamination or tissue loss, requiring specialized management. The presence of nonunion indicates that the fracture has failed to heal properly, potentially impacting joint stability and function.

Causes

High-impact trauma, such as falls, motor vehicle accidents, or direct force to the thigh. Sports injuries or physical altercations involving the knee. Previous surgical interventions or inadequate initial treatment may contribute to nonunion.

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.
• Poor blood supply to the fracture site.
• Infection or other complications from the initial injury.

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.
• Signs of infection, such as redness, warmth, or drainage from the open wound.
• Delayed or absent healing of the fracture site.

Diagnosis

Physical examination to assess pain, swelling, and deformity. Imaging studies, including X-rays, CT scans, or MRI, to evaluate fracture alignment, nonunion, and soft tissue involvement. Assessment of the open wound for contamination or tissue loss. Evaluation of blood flow and nerve function in the affected limb.

Treatment Options

Surgical intervention to realign and stabilize the fracture, often using internal fixation devices such as plates or screws. Bone grafting may be necessary to promote healing in cases of nonunion. Antibiotics or wound care to address infection in open fractures. Physical therapy to restore mobility and strength after healing.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, the success of surgical intervention, and the patient’s overall health. Follow-up care is essential to monitor healing, address complications, and guide rehabilitation. Regular imaging may be required to assess progress and detect nonunion or other issues.

Complications

Infection at the fracture site or open wound. Nerve or blood vessel damage. Chronic pain or arthritis in the knee joint. Delayed or failed healing (nonunion). Limb length discrepancy or deformity. Reduced mobility or functional impairment.

Lifestyle & Prevention

Avoid high-impact activities that risk further injury. Maintain a healthy diet rich in calcium and vitamin D to support bone health. Use protective equipment during sports or high-risk activities. Follow post-treatment guidelines for weight-bearing and activity restrictions. Attend all scheduled follow-up appointments.

When to Seek Professional Help

Seek immediate medical attention for severe pain, swelling, or deformity. Contact a healthcare provider if there are signs of infection, such as fever, redness, or drainage. Follow up with a specialist if pain persists or mobility does not improve.

Tips for Medical Coders

Document the laterality (left femur), fracture type (supracondylar with intracondylar extension), encounter type (subsequent), open fracture classification (IIIA, IIIB, or IIIC), and nonunion status. Ensure detailed clinical notes support the open fracture severity and nonunion diagnosis to justify code assignment.