S82.014K Nondisplaced osteochondral fracture of right patella, subsequent encounter for closed fracture with nonunion

Name of the Condition

• Nondisplaced osteochondral fracture of right patella, subsequent encounter for closed fracture with nonunion

Summary

This condition involves a fracture of the right patella (kneecap) where a portion of the bone and its attached cartilage is damaged but remains in its normal anatomical position. The injury is classified as closed, meaning the skin is intact, and it is a subsequent encounter for a fracture that has failed to heal (nonunion). The nondisplaced nature indicates that the fracture fragments are not separated or misaligned, but the lack of healing requires ongoing management.

Causes

Direct trauma to the right knee, such as a fall onto the kneecap, a forceful blow, or a high-impact injury (e.g., motor vehicle accident or sports injury). The fracture occurs when the force is sufficient to damage both the bone and overlying cartilage but not enough to displace the fragments. Nonunion may develop due to inadequate immobilization, poor blood supply, or other factors that impede healing.

Risk Factors

• Participation in activities with a high risk of knee injury, such as contact sports or skiing.
• Osteoporosis or other bone-weakening conditions.
• Previous knee injuries or surgeries.
• Advanced age, which may reduce bone density.
• Factors that impair healing, such as smoking or diabetes.

Symptoms

• Persistent pain in the right knee, often worsening with activity.
• Swelling and bruising around the kneecap that may not resolve.
• Difficulty straightening or bearing weight on the right knee.
• A "popping" or grinding sensation in the knee.
• Possible instability or weakness in the knee joint.

Diagnosis

A physical examination to assess knee movement, swelling, and tenderness. Imaging studies, typically X-rays, to evaluate the fracture site and confirm nonunion. Additional tests, such as MRI or CT scans, may be used to assess cartilage damage or blood supply to the bone.

Treatment Options

• Immobilization with a brace or cast to stabilize the knee.
• Physical therapy to restore strength and mobility.
• Pain management with medications or injections.
• Surgical intervention, such as bone grafting or fixation, if nonunion persists.
• Monitoring to ensure healing or adjust treatment as needed.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and response to treatment. Most patients improve with appropriate management, but recovery may be prolonged. Regular follow-up appointments are necessary to monitor healing and adjust treatment plans. Long-term outcomes may include reduced knee function or arthritis in some cases.

Complications

• Chronic pain or instability in the knee.
• Development of arthritis due to persistent joint damage.
• Infection (rare, if surgery is performed).
• Need for additional surgeries if nonunion does not resolve.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use protective gear during sports or activities with knee injury risk.
• Maintain a healthy diet rich in calcium and vitamin D to support bone health.
• Follow rehabilitation plans to strengthen the knee and prevent future injuries.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or inability to bear weight on the right knee. Contact your healthcare provider if symptoms worsen or do not improve with treatment, or if you notice new or worsening instability in the knee.

Tips for Medical Coders

Document the encounter as a subsequent visit for a closed fracture with nonunion. Ensure the record specifies the right patella, nondisplaced nature, and closed status. Include details about the nonunion, such as imaging findings or clinical assessment, to support the code. Verify that the encounter is not an initial visit or for an open fracture.