S72.452K Displaced supracondylar fracture without intracondylar extension of lower end of left femur, subsequent encounter for closed fracture with nonunion

Name of the Condition

• Displaced supracondylar fracture without intracondylar extension of lower end of left femur, subsequent encounter for closed fracture with nonunion

Summary

This condition involves a displaced fracture at the distal (lower) end of the left femur, specifically in the supracondylar region (above the condyles), without extension into the intracondylar area. The fracture is closed (skin remains intact) and is classified as a subsequent encounter for a closed fracture with nonunion, indicating the bone has failed to heal properly after an initial injury. Displacement means the bone fragments are misaligned, which may affect knee stability and function.

Causes

High-impact trauma, such as falls, motor vehicle accidents, or direct blows to the thigh. Sports injuries or physical altercations involving force to the knee or thigh. Nonunion may result from inadequate initial treatment, poor blood supply to the fracture site, infection, or excessive movement during healing.

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 that impair healing, such as smoking, diabetes, or nutritional deficiencies.

Symptoms

• Persistent pain in the knee or thigh area, often worsening with activity.
• Swelling, bruising, or visible deformity around the knee.
• Inability to bear weight or move the knee joint properly.
• Possible numbness or tingling if nerves are involved.
• A sense of instability or "giving way" in the knee.

Diagnosis

Physical examination to assess pain, swelling, and deformity. Imaging studies, such as X-rays, CT scans, or MRI, to confirm the fracture, assess alignment, and evaluate for nonunion. Evaluation of healing progress through serial imaging and clinical assessment.

Treatment Options

• Immobilization with a cast or brace to stabilize the fracture.
• Surgical intervention, such as internal fixation with plates, screws, or rods, to realign and stabilize the bone.
• Bone grafting or other procedures to promote healing in cases of nonunion.
• Physical therapy to restore strength, range of motion, and function.
• Pain management and monitoring for complications.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, alignment after treatment, and the success of healing. Nonunion may require additional interventions. Regular follow-up with imaging and clinical assessments to monitor healing and adjust treatment as needed. Long-term rehabilitation is often necessary to restore function.

Complications

• Nonunion or delayed union of the fracture.
• Infection, particularly if surgical intervention is required.
• Nerve or blood vessel damage, leading to numbness, weakness, or circulation issues.
• Arthritis or chronic pain in the knee joint.
• Reduced mobility or functional impairment.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Follow a balanced diet rich in calcium and vitamin D to support bone health.
• Engage in low-impact exercises, such as swimming or cycling, to maintain strength and flexibility.
• Use protective gear during sports or activities with a risk of falls.
• Quit smoking and limit alcohol, as these can impair bone healing.

When to Seek Professional Help

Seek immediate medical attention for severe pain, swelling, deformity, or inability to bear weight. Contact a healthcare provider if symptoms worsen, or if there is numbness, tingling, or signs of infection (e.g., fever, redness, drainage).

Tips for Medical Coders

Document the laterality (left femur), the nature of the fracture (displaced, supracondylar, without intracondylar extension), the encounter type (subsequent), and the presence of nonunion. Ensure documentation supports the closed fracture status and the nonunion diagnosis to justify the code.