S62.112K Displaced fracture of triquetrum [cuneiform] bone, left wrist, subsequent encounter for fracture with nonunion

Name of the Condition

• Displaced fracture of triquetrum [cuneiform] bone, left wrist, subsequent encounter for fracture with nonunion

Summary

This condition involves a displaced fracture of the triquetrum bone in the left wrist during a subsequent encounter, where the fracture has failed to heal (nonunion). The triquetrum is a small carpal bone on the ulnar (pinky) side of the wrist, and displacement means the broken fragments are not aligned. Nonunion indicates the fracture has not progressed to union after an expected healing period, requiring further management to address the lack of bone healing.

Causes

Typically results from initial trauma to the left wrist, such as a fall onto an outstretched hand, a direct blow, or a twisting injury. Nonunion may develop due to inadequate immobilization, poor blood supply to the bone, infection, or excessive movement during the healing phase.

Risk Factors

• Participation in activities with a high risk of wrist trauma, like contact sports or falls.
• Osteoporosis or weakened bone structure, which may impair healing.
• Smoking or other factors that reduce blood flow to the fracture site.
• Previous wrist injuries or fractures that could predispose to nonunion.

Symptoms

• Persistent pain or discomfort in the left wrist, often unchanged or worsening over time.
• Swelling or tenderness at the injury site that does not resolve.
• Limited range of motion or difficulty moving the hand or fingers.
• Possible clicking or grinding sensations with wrist movement.

Diagnosis

Clinical evaluation to assess healing progress, including checking for pain, swelling, or mobility issues. Imaging tests, such as X-rays, CT scans, or MRIs, to confirm nonunion by showing a persistent fracture line with no bridging bone.

Treatment Options

• Surgical intervention: May include bone grafting, internal fixation, or other procedures to promote healing.
• Immobilization: Continued use of a cast or brace to stabilize the wrist, if appropriate.
• Physical therapy: To restore function and strength once healing is addressed.
• Pain management: Medications or other therapies to control discomfort.

Prognosis and Follow-Up

Prognosis depends on the success of treatment to achieve union. Follow-up imaging and clinical assessments are necessary to monitor healing progress. Long-term outcomes may include persistent pain or reduced wrist function if nonunion is not resolved.

Complications

• Chronic pain or instability in the wrist.
• Arthritis or degenerative changes in the surrounding joints.
• Reduced grip strength or functional limitations.
• Need for additional surgeries if initial treatment fails.

Lifestyle & Prevention

• Avoid high-impact activities or falls that could worsen the injury.
• Follow post-treatment guidelines for immobilization and activity restrictions.
• Maintain bone health through proper nutrition and exercise (if appropriate).
• Use protective gear during sports or activities with wrist injury risk.

When to Seek Professional Help

Seek care if pain persists, swelling increases, or wrist function does not improve. Immediate attention is needed for signs of infection (e.g., redness, fever) or new deformity.

Tips for Medical Coders

Document the subsequent encounter for fracture with nonunion, including clinical findings (e.g., persistent fracture line on imaging) and treatment plans. Ensure documentation supports the nonunion diagnosis and subsequent encounter status.