S82.152Q Displaced fracture of left tibial tuberosity, subsequent encounter for open fracture type I or II with malunion

Name of the Condition

• Displaced fracture of left tibial tuberosity, subsequent encounter for open fracture type I or II with malunion

Summary

A displaced fracture of the left tibial tuberosity involves a break in the bony prominence on the anterior upper tibia where the patellar tendon attaches. Displacement means the bone fragments are misaligned. This specific code refers to a subsequent encounter for an open fracture (type I or II) with malunion, indicating the fracture has healed in a non-anatomic position. The injury typically results from trauma or excessive stress on the knee, particularly in active individuals.

Causes

Traumatic injury is the primary cause, such as direct impact to the knee, falls, or sudden forceful contraction of the quadriceps muscle. Sports-related incidents, motor vehicle accidents, or other high-impact events can lead to this fracture. Open fractures occur when the broken bone penetrates the skin, increasing infection risk. Malunion may develop if the fracture does not heal properly, often due to inadequate initial treatment or poor bone alignment.

Risk Factors

• Participation in activities with rapid knee extension or jumping (e.g., basketball, soccer)
• Adolescent growth spurts, especially in athletes
• Previous knee injuries or surgeries
• Osteoporosis or bone-weakening conditions
• High-impact trauma, such as falls or direct blows to the knee

Symptoms

• Severe pain and swelling over the tibial tuberosity
• Inability to fully extend the knee or bear weight
• Visible deformity or abnormal positioning of the knee
• Bruising or discoloration in the affected area
• Persistent instability or functional impairment due to malunion

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and deformity. Imaging studies, such as X-rays, are used to confirm the fracture, evaluate displacement, and assess malunion. Additional tests like CT scans may be ordered to better visualize bone alignment. Clinical history, including prior treatment and healing progress, is critical for determining the fracture type and encounter status.

Treatment Options

Treatment focuses on managing symptoms, correcting malunion, and restoring function. Options may include physical therapy to improve mobility and strength, orthopedic consultation for possible surgical intervention to realign the bone, and pain management. Open fractures require careful wound care to prevent infection, and malunion may necessitate surgical correction if it significantly impacts knee function.

Prognosis and Follow-Up

Prognosis depends on the severity of malunion and the effectiveness of treatment. With appropriate care, many patients regain functional use of the knee, though some may experience long-term stiffness or weakness. Regular follow-up appointments are necessary to monitor healing, assess functional recovery, and address any complications. Physical therapy is often recommended to optimize outcomes.

Complications

• Chronic pain or discomfort
• Reduced knee range of motion
• Increased risk of arthritis due to malunion
• Potential for re-fracture if bone healing is compromised
• Infection risk (if open fracture present)

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider
• Use proper protective gear during sports or physical activities
• Maintain bone health through adequate nutrition (e.g., calcium, vitamin D)
• Follow rehabilitation guidelines to support proper healing
• Seek prompt medical attention for knee injuries to prevent malunion

When to Seek Professional Help

Seek immediate medical care if you experience severe knee pain, inability to bear weight, visible deformity, or signs of infection (e.g., fever, increased swelling, redness). Follow up with a healthcare provider if symptoms worsen or do not improve with initial treatment, or if you notice persistent instability or functional limitations.

Tips for Medical Coders

This code is specific to a subsequent encounter for an open fracture type I or II with malunion of the left tibial tuberosity. Documentation must clearly indicate the encounter type (subsequent), fracture type (open I or II), and the presence of malunion. Ensure clinical notes support the fracture status and healing progress to justify the code assignment.