S72.421K Displaced fracture of lateral condyle of right femur, subsequent encounter for closed fracture with nonunion

Name of the Condition

• Displaced fracture of lateral condyle of right femur, subsequent encounter for closed fracture with nonunion

Summary

A displaced fracture of the lateral condyle of the right femur is a bone break affecting the outer bony prominence of the thigh bone near the knee. In this subsequent encounter, the fracture remains closed (no skin penetration) but has not healed properly, resulting in nonunion. This condition requires ongoing management to address the lack of bone healing and restore function.

Causes

This fracture typically results from high-impact trauma, such as falls, motor vehicle accidents, or direct blows to the knee. Sports injuries or forceful twisting of the knee can also cause this type of fracture. Nonunion may develop due to inadequate initial treatment, poor blood supply to the fracture site, or excessive movement during healing.

Risk Factors

• Participation in high-impact or contact sports.
• Osteoporosis or reduced bone density.
• Advanced age, which may weaken bone structure.
• Previous fractures or bone disorders.
• Activities involving high injury risk.
• Smoking or poor nutrition, which can impair healing.

Symptoms

• Persistent pain localized to the knee or thigh area, often worsening with activity.
• Swelling, bruising, or tenderness around the fracture site.
• Inability to bear weight or move the knee normally.
• Visible deformity or instability in severe cases.
• Possible numbness or tingling if nerves are affected.

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and limb alignment. Imaging tests, such as X-rays or CT scans, are used to confirm the fracture and evaluate displacement. MRI may be ordered if soft tissue damage is suspected. Follow-up imaging is typically performed to assess healing progress and identify nonunion.

Treatment Options

• Immobilization with a cast or brace to stabilize the fracture.
• Pain management through medications or physical therapy.
• Surgical intervention, such as bone grafting or internal fixation, to promote healing.
• Physical therapy to restore movement and strength after treatment.

Prognosis and Follow-Up

The prognosis depends on the severity of the nonunion and the effectiveness of treatment. With proper intervention, many patients achieve successful healing and restored function. Regular follow-up appointments and imaging are necessary to monitor progress and adjust treatment as needed.

Complications

• Chronic pain or stiffness in the knee.
• Arthritis or joint degeneration due to improper healing.
• Nerve or blood vessel damage near the fracture site.
• Infection (rare, but possible with surgical intervention).
• Reduced mobility or disability if healing is incomplete.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Maintain a healthy diet rich in calcium and vitamin D to support bone health.
• Use protective gear during sports or activities with injury risk.
• Follow post-treatment guidelines to promote healing and prevent re-injury.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or deformity after an injury. Contact your healthcare provider if symptoms worsen or do not improve with treatment, or if you notice signs of infection (e.g., fever, redness, or drainage).

Tips for Medical Coders

When coding for this condition, ensure the documentation specifies "subsequent encounter" and "nonunion" to accurately reflect the stage of healing and the presence of unhealed bone. Verify that the fracture is closed (no skin penetration) and that the lateral condyle of the right femur is clearly identified. Use additional codes as needed to capture related conditions or treatments.