S62.175K Nondisplaced fracture of trapezium [larger multangular], left wrist, subsequent encounter for fracture with nonunion

Name of the Condition

• Nondisplaced fracture of trapezium [larger multangular], left wrist, subsequent encounter for fracture with nonunion

Summary

This condition refers to a break in the trapezium bone of the left wrist where the bone fragments remain in their normal alignment, but the fracture has failed to heal (nonunion) during a subsequent encounter. The trapezium, a small carpal bone at the base of the thumb, is essential for thumb movement and grip. Nondisplaced fractures mean the bone fragments are not displaced, but nonunion indicates the fracture site has not progressed to union despite prior treatment.

Causes

Typically caused by direct trauma to the wrist, such as a fall onto an outstretched hand, a blow to the wrist, or a twisting injury. High-impact activities or accidents may also lead to fractures in this specific bone. Nonunion can result from inadequate immobilization, poor blood supply to the bone, or other factors affecting 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.

Symptoms

• Persistent pain, swelling, and tenderness at the base of the thumb.
• Bruising or discoloration around the injury site.
• Limited range of motion or difficulty moving the thumb.
• Visible deformity in severe cases.

Diagnosis

Physical examination to assess pain, swelling, and thumb mobility. Imaging tests, such as X-rays, CT scans, or MRIs, to confirm the fracture and evaluate its extent and alignment. Additional imaging may be used to assess for nonunion, such as delayed union or lack of bone healing.

Treatment Options

• Immobilization: Continued use of a cast, splint, or brace to support the wrist and promote healing.
• Surgical intervention: Procedures like bone grafting, internal fixation, or other techniques to stimulate bone union.
• Physical therapy: Rehabilitation to restore strength and range of motion after healing or surgery.
• Pain management: Medications or other therapies to control discomfort.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and response to treatment. Nondisplaced fractures with nonunion may require extended follow-up and potential surgery to achieve union. Regular monitoring with imaging and clinical assessments is necessary to track healing progress.

Complications

• Chronic pain or discomfort at the fracture site.
• Persistent limited range of motion or weakness in the thumb.
• Risk of further injury to the wrist or surrounding structures.
• Potential need for additional interventions if nonunion persists.

Lifestyle & Prevention

• Avoid high-impact activities or falls that could worsen the injury.
• Use protective gear during sports or activities with a risk of wrist injury.
• Maintain bone health through proper nutrition and exercise, especially for those with osteoporosis.
• Follow post-treatment guidelines to support healing and reduce complications.

When to Seek Professional Help

Seek medical attention if you experience worsening pain, swelling, or difficulty moving the thumb, or if symptoms do not improve with current treatment. Prompt evaluation is important if nonunion is suspected or if new symptoms develop.

Tips for Medical Coders

Document the encounter as a subsequent visit for a fracture with nonunion. Ensure clinical documentation specifies the nondisplaced nature of the trapezium fracture, the left wrist, and the nonunion status. Include details about prior treatments, imaging findings, and any surgical or therapeutic interventions related to the nonunion.