S82.121N Displaced fracture of lateral condyle of right tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Name of the Condition

Displaced fracture of lateral condyle of right tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Summary

This condition involves a displaced fracture of the lateral condyle of the right tibia, a bony prominence on the outer side of the upper tibia that contributes to knee joint stability. The fracture is classified as open type IIIA, IIIB, or IIIC, meaning the skin over the fracture site was breached during the injury, and this is a subsequent encounter for treatment. The fracture has not healed (nonunion) after an expected period.

Causes

Traumatic injury to the knee, such as falls, sports-related impacts, or motor vehicle accidents, is the primary cause. Direct force to the lateral knee or twisting injuries can lead to this fracture. Nonunion may result from inadequate initial treatment, poor blood supply to the fracture site, infection, or excessive movement before healing.

Risk Factors

• Participation in high-impact or contact sports.
• Osteoporosis or other bone-weakening conditions.
• Previous knee injuries or surgeries.
• Advanced age, which may reduce bone density.
• Poor nutrition or smoking, which can impair bone healing.

Symptoms

• Persistent pain, swelling, and tenderness localized to the lateral knee.
• Difficulty bearing weight on the affected leg.
• Visible deformity or misalignment at the injury site.
• Bruising or discoloration around the fracture area.
• Possible open wound if the fracture is type IIIA, IIIB, or IIIC.
• Lack of healing progress over time.

Diagnosis

Physical examination to assess pain, swelling, and joint stability. Imaging tests, such as X-rays or CT scans, to evaluate fracture type, displacement, and joint involvement. Additional tests may be used to assess blood flow or infection if the fracture is open.

Treatment Options

• Surgical intervention to realign and stabilize the fracture with plates, screws, or pins, possibly including bone grafting to promote healing.
• Antibiotics or wound care for open fractures to prevent or treat infection.
• Immobilization with a cast or brace to allow healing.
• Pain management with medications like NSAIDs.
• Physical therapy to regain strength and mobility once healing progresses.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, the success of treatment, and the patient's overall health. Nonunion may require additional interventions. Regular follow-up with imaging is necessary to monitor healing. Long-term mobility and function may be affected, but many patients regain significant use of the knee with appropriate care.

Complications

• Infection, especially with open fractures.
• Persistent pain or arthritis in the knee joint.
• Nerve or blood vessel damage.
• Limited range of motion or stiffness.
• Chronic nonunion requiring further surgery.

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 a risk of knee injury.
• Follow post-treatment instructions carefully to promote healing.

When to Seek Professional Help

Seek immediate medical attention if there is severe pain, swelling, or deformity after an injury. Contact a healthcare provider if symptoms worsen, or if there are signs of infection (e.g., fever, increased redness, or drainage from the wound).

Tips for Medical Coders

This code is used for a subsequent encounter of a displaced fracture of the lateral condyle of the right tibia that is open (type IIIA, IIIB, or IIIC) with nonunion. Documentation should specify the fracture type, laterality (right), and the presence of nonunion. Ensure the encounter is classified as "subsequent" and that the open fracture type is clearly documented.