S82.033S Displaced transverse fracture of unspecified patella, sequela

Name of the Condition

• Displaced transverse fracture of unspecified patella, sequela

Summary

This condition represents a horizontal break in the kneecap (patella) where the bone fragments are not aligned, occurring during the late effects phase of healing. The term "sequela" indicates residual effects following the acute injury, such as chronic pain, limited mobility, or malalignment. The fracture is classified as "unspecified" when the side (left or right) 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. The sequela phase arises from incomplete healing or complications of the initial fracture.

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.
• Inadequate initial treatment or non-compliance with rehabilitation.

Symptoms

• Chronic pain in the knee, especially with movement.
• Persistent swelling or bruising around the kneecap.
• Limited range of motion or difficulty straightening the knee.
• Visible deformity or a gap in the kneecap area.
• Instability or weakness in the knee joint.

Diagnosis

A physical examination to assess knee movement, swelling, and tenderness. Imaging studies, typically X-rays, to evaluate bone alignment and healing. In some cases, a CT scan may be used to assess complex malunion or nonunion. Clinical correlation with the patient’s history of prior fracture is essential.

Treatment Options

• Physical therapy to improve strength, flexibility, and function.
• Pain management with medications or injections.
• Orthopedic evaluation for possible surgical intervention (e.g., realignment or hardware removal).
• Assistive devices (e.g., braces) to support mobility.

Prognosis and Follow-Up

Prognosis depends on the severity of residual damage and adherence to treatment. Regular follow-up with an orthopedic specialist is recommended to monitor healing and address functional limitations. Long-term outcomes may include reduced mobility or chronic discomfort.

Complications

• Chronic pain or arthritis in the knee joint.
• Malunion (improper healing) or nonunion (failure to heal).
• Reduced range of motion or stiffness.
• Increased risk of future knee injuries.

Lifestyle & Prevention

• Engage in low-impact exercises to maintain knee strength without strain.
• Use protective gear during high-risk activities.
• Maintain a healthy weight to reduce joint stress.
• Follow post-injury rehabilitation protocols to optimize recovery.

When to Seek Professional Help

Seek immediate medical attention if symptoms worsen, new swelling or deformity occurs, or if there is sudden loss of function. Consult a healthcare provider for persistent pain or difficulty bearing weight.

Tips for Medical Coders

Document the sequela phase clearly, including evidence of residual effects from the prior fracture. Ensure the "unspecified" designation is appropriate when side (left/right) is not documented. Code S82.033S is used for the late effects of a displaced transverse patellar fracture; verify that the encounter aligns with the sequela timeframe and clinical findings.