S62.115K Nondisplaced fracture of triquetrum [cuneiform] bone, left wrist, subsequent encounter for fracture with nonunion

Name of the Condition

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

Summary

This condition involves a break in the triquetrum bone of the left wrist without displacement of bone fragments, classified as a subsequent encounter for fracture with nonunion. The triquetrum is a small carpal bone on the ulnar (pinky) side of the wrist, contributing to wrist stability. A nonunion indicates the fracture has not healed properly after an expected timeframe, requiring further evaluation and management. This type of injury typically results from trauma and may affect wrist function if healing is delayed or incomplete.

Causes

Usually caused by direct trauma to the left wrist, such as a fall onto an outstretched hand, a blow, or a twisting injury. High-impact events or accidents may lead to this specific fracture type. Nonunion can occur due to inadequate immobilization, poor blood supply to the bone, infection, or other factors that impede healing.

Risk Factors

• Participation in contact sports or activities with a high risk of falls.
• Osteoporosis or weakened bone structure, especially in older adults.
• Previous wrist injuries or fractures.
• Smoking or other factors that impair bone healing.
• Inadequate initial treatment or immobilization.

Symptoms

• Persistent pain, swelling, and tenderness in the ulnar side of the left wrist.
• Bruising or discoloration around the injury site.
• Limited range of motion or difficulty moving the hand or fingers.
• Possible clicking or grinding sensation during wrist movement.
• No visible deformity, as the fracture remains nondisplaced.

Diagnosis

Physical examination to assess pain, swelling, and wrist mobility. Imaging tests, such as X-rays, CT scans, or MRIs, to confirm the fracture and evaluate for nonunion. Additional tests may be ordered to assess bone healing or rule out infection. Clinical history of prior fracture and lack of progress in healing are key considerations.

Treatment Options

• Immobilization with a cast or splint to support the wrist and promote healing.
• Surgical intervention, such as bone grafting or internal fixation, if nonunion persists.
• Physical therapy to restore range of motion and strength once healing is underway.
• Pain management with medications or other modalities.
• Monitoring for signs of infection or further complications.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and response to treatment. Most patients can expect improved function with appropriate management, though recovery may be prolonged. Regular follow-up appointments are necessary to monitor healing and adjust treatment plans. Long-term outcomes are generally favorable with proper care.

Complications

• Chronic pain or discomfort in the wrist.
• Persistent limited range of motion.
• Increased risk of arthritis in the affected joint.
• Infection, especially if surgical intervention is required.
• Need for additional procedures if nonunion does not resolve.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use protective gear during sports or activities with fall risks.
• Maintain bone health through proper nutrition and exercise.
• Follow post-injury care instructions to support healing.
• Quit smoking or reduce exposure to factors that impair bone healing.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or inability to move the wrist. Contact your healthcare provider if symptoms worsen or do not improve with treatment, or if you notice signs of infection (e.g., redness, warmth, fever). Regular follow-up is important to monitor healing progress.

Tips for Medical Coders

Document the subsequent encounter for fracture with nonunion, specifying the left wrist and triquetrum bone. Include details about the fracture's status (nondisplaced) and any contributing factors to nonunion. Ensure clinical documentation supports the diagnosis and encounter type for accurate coding.