S82.155H Nondisplaced fracture of left tibial tuberosity, subsequent encounter for open fracture type I or II with delayed healing

Name of the Condition

• Nondisplaced fracture of left tibial tuberosity, subsequent encounter for open fracture type I or II with delayed healing

Summary

A nondisplaced fracture of the left tibial tuberosity involves a break in the bony prominence on the anterior upper tibia where the patellar tendon attaches, with the bone fragments remaining aligned. This is a subsequent encounter for an open fracture type I or II, meaning the overlying skin was breached but the wound is limited, and healing is delayed. The tibial tuberosity is critical for knee extension, and even nondisplaced fractures can impact function. Open fractures require careful management to prevent infection, and delayed healing indicates a prolonged recovery process.

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. The open nature of the fracture indicates the skin was penetrated, often by the fractured bone or external force, and delayed healing may result from factors like poor blood supply, infection, or inadequate initial treatment.

Risk Factors

• Participation in high-impact sports (e.g., basketball, soccer)
• Adolescent growth spurts, especially in athletes
• Previous knee injuries or surgeries
• Activities involving sudden stops or jumps
• Open wounds near the tibial tuberosity (increasing infection risk)
• Conditions affecting bone healing (e.g., diabetes, smoking)

Symptoms

• Localized pain and swelling over the tibial tuberosity
• Difficulty extending the knee or bearing weight
• Bruising or tenderness on palpation
• Minimal deformity due to nondisplacement
• Persistent wound or drainage (if open fracture)
• Prolonged healing time beyond expected duration

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and functional limitations, with attention to any open wounds or signs of infection. Imaging studies, such as X-rays, are used to confirm the fracture and evaluate alignment. CT or MRI may be ordered for complex cases to assess bone healing or soft tissue involvement. Laboratory tests may be performed to check for infection if the fracture is open.

Treatment Options

• Immobilization with a cast or brace to support healing
• Wound care for open fractures to prevent infection
• Pain management with medications or physical therapy
• Surgical intervention if delayed healing persists or complications arise
• Gradual weight-bearing and range-of-motion exercises as healing allows

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, adherence to treatment, and any underlying health conditions. Delayed healing may prolong recovery, but most patients regain function with proper care. Follow-up appointments are necessary to monitor healing progress, adjust treatment, and address complications. Physical therapy is often recommended to restore strength and mobility.

Complications

• Infection (especially with open fractures)
• Nonunion or malunion of the fracture
• Chronic pain or stiffness
• Reduced knee function or mobility
• Nerve or vascular damage (rare)

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider
• Use proper protective gear during sports
• Maintain a healthy diet rich in calcium and vitamin D for bone health
• Quit smoking, as it impairs healing
• Follow rehabilitation guidelines to prevent re-injury

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or inability to bear weight, or if an open wound shows signs of infection (e.g., redness, pus, fever). Contact your provider if symptoms worsen or do not improve with treatment, or if you notice new numbness or discoloration in the leg.

Tips for Medical Coders

Document the fracture type (open I or II), laterality (left), and encounter type (subsequent) clearly. Note any evidence of delayed healing, such as prolonged healing time or lack of radiographic progress, to support the code. Ensure documentation aligns with the specific criteria for open fracture classification and subsequent encounter coding.