S82.031R Displaced transverse fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion

Name of the Condition

• Displaced transverse fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion

Summary

This condition involves a horizontal break in the right kneecap (patella) where the bone fragments are displaced and have healed improperly (malunion). The fracture is classified as an open injury (type IIIA, IIIB, or IIIC), meaning the skin was broken, and this is a subsequent encounter for treatment. The severity depends on the extent of soft tissue damage and the degree of malunion.

Causes

Direct trauma to the right knee, such as a high-impact fall or forceful blow, which resulted in an open fracture. Malunion may occur if the initial fracture was not properly aligned during healing, leading to abnormal bone union.

Risk Factors

• Participation in activities with a high risk of severe knee injury, such as contact sports or motor vehicle accidents.
• Osteoporosis or other bone-weakening conditions that impair healing.
• Delayed or inadequate initial treatment of the fracture.
• Poor blood supply to the knee area, which can affect bone repair.

Symptoms

• Persistent pain in the right knee, especially with movement.
• Swelling, bruising, or visible scarring from the previous open fracture.
• Difficulty straightening or bearing weight on the knee.
• Visible deformity or abnormal alignment of the kneecap.
• Stiffness or reduced range of motion in the knee joint.

Diagnosis

A physical examination to assess knee function, swelling, and deformity, with attention to previous wound sites. Imaging studies, typically X-rays, to evaluate the fracture alignment and malunion. CT scans may be used to assess complex bone healing or soft tissue damage.

Treatment Options

• Surgical intervention to realign and stabilize the patella, often with plates or screws.
• Physical therapy to restore knee strength and mobility.
• Pain management with medications or other modalities.
• Monitoring for infection or complications related to the open fracture.

Prognosis and Follow-Up

Recovery depends on the severity of the malunion and soft tissue damage. Surgical correction may improve function, but some residual stiffness or pain may persist. Regular follow-up appointments are necessary to monitor healing and adjust treatment as needed.

Complications

• Chronic pain or arthritis in the knee joint.
• Infection from the previous open fracture.
• Limited range of motion or persistent deformity.
• Need for additional surgery if malunion causes functional impairment.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use protective gear during sports or activities with knee injury risk.
• Maintain bone health through proper nutrition and exercise.
• Follow post-treatment guidelines to support proper healing.

When to Seek Professional Help

Seek immediate medical attention if you experience severe knee pain, swelling, or inability to bear weight, or if you notice signs of infection (e.g., redness, warmth, or drainage) at the previous fracture site.

Tips for Medical Coders

Document the laterality (right patella), fracture type (transverse), displacement, open fracture classification (IIIA, IIIB, or IIIC), malunion, and that this is a subsequent encounter. Ensure clinical notes specify the fracture details and treatment context to support accurate coding.