S62.026K Nondisplaced fracture of middle third of navicular [scaphoid] bone of unspecified wrist, subsequent encounter for fracture with nonunion

Name of the Condition

• Nondisplaced fracture of middle third of navicular [scaphoid] bone of unspecified wrist, subsequent encounter for fracture with nonunion

Summary

This condition involves a break in the middle third of the navicular (scaphoid) bone, a small bone in the wrist near the base of the thumb. The fracture is nondisplaced, meaning the bone fragments remain in their normal anatomical position. It is classified as a subsequent encounter for a fracture with nonunion, indicating the fracture has not healed properly after an initial injury. The scaphoid is critical for wrist stability and movement, and nonunion may require specialized management to promote healing.

Causes

Typically results from a fall onto an outstretched hand (FOOSH). Can occur due to direct trauma to the wrist, such as a blow or impact. May also result from twisting injuries or high-impact activities that stress the wrist. Nonunion may develop if the fracture does not heal within the expected timeframe, often due to inadequate immobilization, poor blood supply to the scaphoid, or other complicating factors.

Risk Factors

• Participation in contact sports or activities with a high risk of falls.
• Osteoporosis or weakened bone structure, particularly in older adults.
• Previous wrist injuries or fractures that may have compromised bone integrity.
• Delayed or inadequate initial treatment of the fracture.

Symptoms

• Persistent pain and tenderness at the base of the thumb.
• Swelling and bruising around the wrist area that may not resolve.
• Limited wrist movement or difficulty gripping objects.
• Possible numbness or tingling if nerves are affected.
• A palpable gap or abnormal motion at the fracture site in some cases.

Diagnosis

Physical examination to assess pain, swelling, and wrist mobility. Imaging tests, such as X-rays, CT scans, or MRI, to visualize the fracture and confirm nonunion. Additional tests may be used to evaluate blood flow to the scaphoid or assess healing progress. Clinical history, including prior treatment and time since injury, is critical for diagnosis.

Treatment Options

• Immobilization with a cast or splint to stabilize the wrist and promote healing.
• Surgical intervention, such as bone grafting or internal fixation, if nonunion persists.
• Physical therapy to restore wrist function and strength after healing.
• Pain management with medications or other modalities as needed.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and response to treatment. Some fractures may heal with conservative management, while others require surgery. Regular follow-up with imaging is necessary to monitor healing. Long-term outcomes may include persistent pain or reduced wrist mobility if healing is incomplete.

Complications

• Chronic pain or arthritis in the wrist.
• Reduced range of motion or functional impairment.
• Increased risk of future fractures due to weakened bone.
• Nerve damage or vascular compromise in severe cases.

Lifestyle & Prevention

• Avoid high-impact activities or falls that risk wrist injury.
• Use protective gear during sports or activities with wrist stress.
• Maintain bone health through proper nutrition and exercise.
• Follow post-injury care instructions to support healing and reduce nonunion risk.

When to Seek Professional Help

Seek medical attention if pain, swelling, or limited movement persists after initial treatment. Immediate care is needed for worsening symptoms, such as increased pain, numbness, or signs of infection. Follow up with a healthcare provider if the fracture does not show signs of healing over time.

Tips for Medical Coders

Document the encounter as a subsequent visit for fracture with nonunion. Include details about prior treatment, imaging results confirming nonunion, and any surgical or conservative management provided. Ensure the code aligns with the patient's clinical status and treatment timeline.