S62.184K Nondisplaced fracture of trapezoid [smaller multangular], right wrist, subsequent encounter for fracture with nonunion

Name of the Condition

• Nondisplaced fracture of trapezoid [smaller multangular], right wrist, subsequent encounter for fracture with nonunion

Summary

This condition refers to a break in the trapezoid bone of the right wrist where the bone fragments remain in their normal anatomical position, but the fracture has failed to heal (nonunion) during a subsequent encounter for treatment. The trapezoid is a small carpal bone on the radial (thumb) side of the wrist, contributing to stability and movement. Nonunion indicates that the fracture site has not progressed to union after an expected healing period, requiring further management.

Causes

Usually caused by direct trauma to the wrist, such as a fall onto an outstretched hand, a blow to the wrist, or a twisting injury. Factors contributing to nonunion may include inadequate immobilization, poor blood supply to the bone, or underlying medical conditions 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.
• Smoking or other factors that impair bone healing.
• Previous wrist injuries or fractures.

Symptoms

• Persistent pain, swelling, and tenderness in the radial side of the right 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.

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 assess bone healing potential or underlying conditions.

Treatment Options

Treatment may include immobilization with a cast or brace, surgical intervention (e.g., bone grafting or fixation), or physical therapy to restore function. Management focuses on promoting union and addressing any contributing factors to nonunion.

Prognosis and Follow-Up

Prognosis depends on the severity of nonunion and response to treatment. Regular follow-up with imaging is typically required to monitor healing progress. Long-term outcomes may include persistent pain or reduced wrist mobility if union is not achieved.

Complications

• Chronic pain or instability in the wrist.
• Increased risk of arthritis in the affected joint.
• Potential need for additional surgery if nonunion persists.
• Reduced grip strength or functional limitations.

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.

When to Seek Professional Help

Seek care if pain worsens, swelling increases, or movement becomes more limited. Prompt evaluation is important if signs of infection (e.g., redness, fever) or new deformity develop.

Tips for Medical Coders

Document the subsequent encounter for fracture with nonunion, including details of the fracture's status and any treatments provided. Ensure clinical documentation supports the nonunion diagnosis and subsequent encounter context.