S62.116K Nondisplaced fracture of triquetrum [cuneiform] bone, unspecified wrist, subsequent encounter for fracture with nonunion

Name of the Condition

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

Summary

This condition involves a break in the triquetrum bone of the wrist without displacement of bone fragments, occurring during a subsequent encounter for treatment when the fracture has failed to heal (nonunion). The triquetrum is a small carpal bone on the ulnar (pinky) side of the wrist, contributing to wrist stability. Nonunion indicates the fracture has not united after an expected healing period, potentially affecting wrist function and requiring further management.

Causes

Typically results from direct trauma to the wrist, such as a fall onto an outstretched hand, a blow, or a twisting injury. Nonunion may develop 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.
• High-impact occupations or recreational activities.
• Conditions that impair bone healing (e.g., diabetes, smoking).

Symptoms

• Persistent pain, swelling, and tenderness in the ulnar side of the wrist.
• Bruising or discoloration around the injury site.
• Limited range of motion or difficulty moving the hand or fingers.
• Possible clicking or grinding sensations during wrist movement.

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 (e.g., visible gap between bone fragments or lack of healing progress over time).

Treatment Options

• Immobilization with a cast or splint to stabilize the wrist.
• Surgical intervention (e.g., bone grafting, internal fixation) to promote healing.
• Pain management with medications or physical therapy to restore function.
• Monitoring for signs of infection or further complications.

Prognosis and Follow-Up

Prognosis depends on the severity of nonunion and response to treatment. Follow-up imaging and clinical assessments are necessary to monitor healing progress. Recovery may be prolonged, and some patients may experience long-term wrist stiffness or reduced function.

Complications

• Chronic pain or persistent wrist instability.
• Increased risk of arthritis in the affected joint.
• Infection (if surgical intervention is required).
• Need for additional procedures if nonunion persists.

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 (e.g., calcium, vitamin D) and exercise.
• Follow post-treatment guidelines to support healing.

When to Seek Professional Help

Seek care if pain worsens, swelling increases, or new symptoms (e.g., fever, redness) develop. Prompt evaluation is important if wrist function does not improve or if nonunion is suspected.

Tips for Medical Coders

Document the encounter as a subsequent visit for fracture with nonunion. Include details on prior treatment, imaging findings confirming nonunion, and any surgical or conservative management provided. Ensure documentation supports the "subsequent encounter" and "nonunion" components of the code.