S82.015A Nondisplaced osteochondral fracture of left patella, initial encounter for closed fracture

Name of the Condition

• Nondisplaced osteochondral fracture of left patella, initial encounter for closed fracture

Summary

This condition involves a fracture of the left patella (kneecap) where a portion of the bone and its attached cartilage is damaged but remains in its normal position. The injury affects both bony and cartilaginous structures, and the term "nondisplaced" indicates that the fracture fragments are not separated or misaligned. The "closed fracture" designation means the overlying skin is intact, and "initial encounter" refers to the first episode of care for this injury.

Causes

Direct trauma to the left knee, such as a fall onto the kneecap, a forceful blow, or a high-impact injury (e.g., motor vehicle accident or sports injury). The fracture occurs when the force is sufficient to damage both the bone and cartilage but not enough to displace the fragments.

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.

Symptoms

• Sudden, severe pain in the left knee.
• Swelling and bruising around the kneecap.
• Inability to straighten or bear weight on the left knee.
• A "popping" sensation at the time of injury.

Diagnosis

A physical examination to assess knee movement, swelling, and tenderness. Imaging studies, typically X-rays, to confirm the fracture and evaluate bone alignment. CT or MRI may be used to assess cartilage damage or complex fractures.

Treatment Options

• Immobilization with a brace or cast to allow healing.
• Pain management with medications or ice.
• Physical therapy to restore strength and mobility.
• Surgical intervention if the fracture does not heal or causes persistent symptoms.

Prognosis and Follow-Up

Most nondisplaced fractures heal with conservative treatment, but recovery may take several weeks to months. Follow-up appointments monitor healing and functional recovery. Long-term outcomes depend on the extent of cartilage damage and adherence to rehabilitation.

Complications

• Delayed healing or nonunion.
• Post-traumatic arthritis due to cartilage damage.
• Chronic pain or stiffness.
• Risk of future knee instability.

Lifestyle & Prevention

• Use protective gear during high-risk activities.
• Maintain bone health with proper nutrition and exercise.
• Avoid sudden, forceful movements that stress the knee.
• Warm up and stretch before physical activity.

When to Seek Professional Help

Seek immediate care if you experience severe knee pain, inability to bear weight, visible deformity, or signs of infection (e.g., fever, redness, drainage).

Tips for Medical Coders

Document the laterality (left patella), fracture type (nondisplaced osteochondral), encounter type (initial), and fracture status (closed) to ensure accurate coding. Include details about the mechanism of injury, imaging findings, and treatment plan to support code assignment.