S82.033M Displaced transverse fracture of unspecified patella, subsequent encounter for open fracture type I or II with nonunion

Name of the Condition

• Displaced transverse fracture of unspecified patella, subsequent encounter for open fracture type I or II with nonunion

Summary

This condition involves a horizontal break in the kneecap (patella) where the bone fragments are not aligned. The fracture is classified as open (type I or II), meaning the skin is broken, and this is a subsequent encounter for treatment. The term "nonunion" indicates the fracture has not healed properly after an expected time frame. The side (left or right) of the patella is not documented.

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. Nonunion may result from inadequate initial treatment, poor blood supply to the bone, or infection.

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.
• Smoking or poor nutrition, which can impair bone healing.

Symptoms

• Persistent pain in the knee, often worsening with movement.
• Swelling and bruising around the kneecap that does not improve over time.
• Inability to straighten the knee or bear weight.
• Visible deformity or a gap in the kneecap area.
• An open wound near the kneecap (indicating an open fracture).
• A "popping" sensation at the time of injury, followed by chronic discomfort.

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 or nonunion. Blood tests may be performed to check for infection or nutritional deficiencies affecting healing.

Treatment Options

• Surgical intervention to realign and stabilize the bone, often using plates, screws, or wires.
• Bone grafting to promote healing in cases of nonunion.
• Antibiotics to treat or prevent infection in open fractures.
• Physical therapy to restore strength and mobility after healing.
• Pain management with medications or other modalities.

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, and recovery can take several months. Regular follow-up appointments with imaging studies are necessary to monitor healing progress. Long-term outcomes may include reduced knee function or arthritis.

Complications

• Infection, especially with open fractures.
• Chronic pain or stiffness in the knee.
• Arthritis due to joint damage.
• Nerve or blood vessel injury near the fracture site.
• Need for additional surgeries if nonunion persists.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use protective gear during sports or activities with a risk of knee injury.
• Maintain a healthy diet rich in calcium and vitamin D to support bone health.
• Quit smoking, as it impairs bone healing.
• Follow post-treatment instructions carefully to optimize recovery.

When to Seek Professional Help

Seek immediate medical attention if you experience severe knee pain, swelling, or an open wound after an injury. Contact your healthcare provider if pain persists, worsens, or if you notice signs of infection (e.g., redness, pus, fever). Regular follow-up is essential to monitor healing and address complications.

Tips for Medical Coders

Document the encounter as a subsequent visit for an open fracture (type I or II) with nonunion. Ensure the fracture is classified as displaced and transverse, and note that the patella side is unspecified. Include details about the open wound and nonunion to support the code. Verify that the encounter is not an initial treatment phase to avoid miscoding.