S82.024K Nondisplaced longitudinal fracture of right patella, subsequent encounter for closed fracture with nonunion

Name of the Condition

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

Summary

A nondisplaced longitudinal fracture of the right patella is a vertical break in the kneecap that remains in its normal alignment. This type of fracture involves a crack along the bone’s length without shifting of the fragments, preserving knee stability. The severity can range from partial to complete, depending on the extent of the break. This code represents a subsequent encounter for a closed fracture that has failed to heal (nonunion) after an initial injury.

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 sports injuries or motor vehicle accidents are common triggers. Nonunion may occur due to inadequate immobilization, poor blood supply to the bone, 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 delay or prevent healing, such as smoking or certain medical conditions.

Symptoms

• Persistent pain in the knee, especially with movement.
• Swelling and bruising around the kneecap that may not resolve.
• Inability to fully straighten the knee or bear weight.
• Visible deformity or a gap in the kneecap area (if severe).
• A "popping" sensation at the time of injury (initial trauma).

Diagnosis

A physical examination to assess knee movement, swelling, and tenderness. Imaging studies, typically X-rays, to confirm the fracture and evaluate bone alignment. In some cases, a CT scan may be used to assess complex fractures or nonunion. Additional tests, such as bone scans, may be ordered to evaluate healing progress.

Treatment Options

• Immobilization with a cast or brace to stabilize the knee.
• Pain management with medications or physical therapy.
• Surgical intervention, such as internal fixation, if nonunion persists or causes functional impairment.
• Rehabilitation to restore strength and mobility.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture and the success of treatment. Nonunion may require extended follow-up and additional interventions. Regular monitoring with imaging studies is often necessary to assess healing. Most patients can return to normal activities with appropriate care, though recovery may take several months.

Complications

• Chronic pain or instability in the knee.
• Arthritis or joint damage over time.
• Infection (if surgical intervention is required).
• Reduced range of motion or mobility.

Lifestyle & Prevention

• Avoid high-impact activities that risk knee injury.
• Maintain bone health through diet and exercise.
• Use protective gear during sports or activities with fall risks.
• Follow post-injury care instructions to promote healing.

When to Seek Professional Help

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

Tips for Medical Coders

Document the encounter as a subsequent visit for a closed fracture with nonunion. Ensure the record specifies the fracture type (nondisplaced longitudinal) and laterality (right patella). Include details about the nonunion status and any treatments provided. Follow ICD-10-CM guidelines for sequencing and specificity.