S82.033F Displaced transverse fracture of unspecified patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing

Name of the Condition

• Displaced transverse fracture of unspecified patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing

Summary

This condition describes a horizontal break in the kneecap (patella) where the bone fragments are not aligned, occurring during a subsequent encounter for an open fracture (types IIIA, IIIB, or IIIC) with routine healing. The fracture is classified as "unspecified" when the side (left or right) is not documented. Open fractures involve skin or soft tissue damage, and routine healing indicates the fracture is progressing without complications.

Causes

Direct trauma to the knee, such as a fall onto the kneecap, a blow from an object, or a forceful contraction of the quadriceps muscle. High-impact injuries, like those from sports or motor vehicle accidents, are common triggers. Open fractures may result from severe trauma that penetrates the skin.

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.
• Lack of protective gear during high-risk activities.

Symptoms

• Sudden, severe pain in the knee.
• Swelling and bruising around the kneecap.
• Inability to straighten the knee or bear weight.
• Visible deformity or a gap in the kneecap area.
• A "popping" sensation at the time of injury.
• Open wound near the kneecap (indicating an open fracture).
• Minimal drainage or signs of healing if routine healing is occurring.

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. Documentation of the fracture type (IIIA, IIIB, or IIIC) and healing status is critical for accurate coding.

Treatment Options

• Immobilization with a cast or brace to stabilize the knee.
• Surgical intervention, such as internal fixation, if the fracture is unstable or requires realignment.
• Antibiotics to prevent infection in open fractures.
• Pain management with medications.
• Physical therapy to restore mobility and strength once healing progresses.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture and adherence to treatment. Routine healing suggests a favorable outcome with proper care. Follow-up appointments are necessary to monitor healing, adjust treatment, and assess for complications. Full recovery may take several months, with gradual return to activity as tolerated.

Complications

• Infection, particularly in open fractures.
• Nonunion or malunion of the fracture.
• Chronic pain or stiffness in the knee.
• Arthritis in the knee joint over time.
• Nerve or blood vessel damage from the initial trauma.

Lifestyle & Prevention

• Use protective gear during high-risk activities (e.g., knee pads in sports).
• Maintain bone health through a balanced diet rich in calcium and vitamin D.
• Avoid activities that increase fall risk, especially in older adults.
• Strengthen knee muscles through regular exercise to improve stability.

When to Seek Professional Help

Seek immediate medical attention if you experience severe knee pain, swelling, or an open wound after trauma. Contact a healthcare provider if symptoms worsen, or if you notice signs of infection (e.g., redness, fever, increased drainage) during recovery.

Tips for Medical Coders

Document the fracture type (IIIA, IIIB, or IIIC) and confirm routine healing to assign this code accurately. Ensure the encounter is classified as "subsequent" and that the fracture is open (not closed) to meet the code criteria. Verify that the patella is unspecified (side not documented) and that the fracture is transverse and displaced.