S82.022K Displaced longitudinal fracture of left patella, subsequent encounter for closed fracture with nonunion

Name of the Condition

• Displaced longitudinal fracture of left patella
• Subsequent encounter for closed fracture with nonunion

Summary

A displaced longitudinal fracture of the left patella is a break in the kneecap that runs vertically and is not properly aligned. This type of fracture involves the bone fragments shifting out of their normal position, which can affect knee function and stability. The "subsequent encounter" designation indicates this is a follow-up visit for an established fracture, and "nonunion" refers to a fracture that has failed to heal properly after an expected period.

Causes

Direct trauma to the knee, such as a fall onto the kneecap, a forceful blow, or a sudden contraction of the quadriceps muscle. High-impact events like motor vehicle accidents or sports injuries are common triggers. Nonunion may result from inadequate immobilization, poor blood supply to the bone, infection, or excessive movement at the fracture site during healing.

Risk Factors

• Participation in high-risk activities or contact sports.
• Osteoporosis or other conditions that weaken bone strength.
• Advanced age, which may reduce bone density.
• Previous knee injuries or surgeries.
• Smoking or other factors that impair bone healing.

Symptoms

• Persistent pain and swelling in the knee, often lasting beyond the typical healing period.
• Visible deformity or misalignment of the kneecap.
• Inability to straighten or bend the knee fully.
• Bruising or tenderness around the fracture site.
• Possible instability or weakness in the knee during movement.

Diagnosis

Physical examination to assess knee alignment and function. Imaging tests, such as X-rays or CT scans, to confirm the fracture and evaluate displacement. MRI may be used to assess soft tissue damage if needed. Follow-up imaging over time helps determine if the fracture is healing or progressing to nonunion.

Treatment Options

• Surgery: To realign and stabilize the fracture with hardware like screws or wires, or bone grafting to promote healing.
• Immobilization: Use of a brace or cast to restrict movement and allow the bone to heal.
• Physical therapy: To restore strength and range of motion once healing is underway.
• Medications: Pain relievers or anti-inflammatory drugs to manage symptoms.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, patient health, and treatment adherence. Nonunion may require additional interventions, such as surgery, to achieve healing. Regular follow-up appointments and imaging are necessary to monitor progress and adjust treatment as needed.

Complications

• Chronic pain or instability in the knee.
• Arthritis or joint damage over time.
• Infection, particularly if surgery is required.
• Reduced mobility or difficulty performing daily activities.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use protective gear during sports or activities with a risk of knee injury.
• Maintain a healthy diet rich in calcium and vitamin D to support bone health.
• Follow post-injury care instructions carefully to promote proper healing.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or deformity in the knee after an injury. Contact your healthcare provider if symptoms persist or worsen, or if you notice signs of infection, such as fever or increased redness.

Tips for Medical Coders

Document the encounter as a subsequent visit for a closed fracture with nonunion. Include details about the fracture's status, treatment provided, and any imaging or clinical findings that confirm nonunion. Ensure the code S82.022K is used only when the fracture is closed and nonunion is present, and the encounter is for follow-up care.