S62.313K Displaced fracture of base of third metacarpal bone, left hand, subsequent encounter for fracture with nonunion

Name of the Condition

• Displaced fracture of base of third metacarpal bone, left hand, subsequent encounter for fracture with nonunion

Summary

A displaced fracture of the base of the third metacarpal bone in the left hand, with nonunion, is a break in the proximal (base) portion of the third metacarpal where bone fragments remain misaligned and have failed to heal properly. This condition occurs during a subsequent encounter for treatment, indicating the fracture has not united after an expected healing period. The injury typically results from trauma or direct impact to the hand, leading to persistent pain, swelling, and functional impairment due to the lack of bone consolidation.

Causes

Direct trauma, such as a fall or blow to the hand. Sports-related injuries or accidents involving the hand. Repetitive stress or overuse in certain activities.

Risk Factors

• Participation in contact sports or high-impact activities.
• Reduced bone density or osteoporosis.
• Occupational hazards involving manual labor or repetitive hand movements.
• Poor blood supply to the fracture site.
• Inadequate immobilization during initial healing.

Symptoms

• Persistent pain and swelling in the left hand.
• Tenderness or bruising around the affected area.
• Difficulty moving the fingers or gripping objects.
• Possible visible deformity or misalignment.
• Limited range of motion in the hand or wrist.

Diagnosis

Physical examination by a healthcare provider to assess tenderness, swelling, or deformity. Imaging tests, such as X-rays, to confirm the fracture and evaluate nonunion. Additional imaging, like CT scans, may be used to assess bone healing and alignment. Review of prior treatment history to determine the fracture's progression.

Treatment Options

• Surgical intervention, such as bone grafting or internal fixation, to promote healing.
• Immobilization with a cast or splint to stabilize the fracture.
• Pain management using over-the-counter or prescription medications.
• Physical therapy to restore mobility and strength.
• Monitoring for signs of infection or further complications.

Prognosis and Follow-Up

Prognosis depends on the success of treatment and the patient's adherence to rehabilitation. Follow-up care is essential to monitor healing progress and adjust treatment as needed. Regular imaging may be required to assess bone union. Long-term outcomes may include residual pain or functional limitations if nonunion persists.

Complications

• Chronic pain or discomfort.
• Persistent functional impairment.
• Increased risk of arthritis in the affected joint.
• Need for additional surgical procedures.
• Infection, particularly if open fracture was present initially.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use protective gear during sports or manual labor.
• Maintain bone health through proper nutrition and exercise.
• Follow post-treatment instructions to support healing.
• Attend all scheduled follow-up appointments.

When to Seek Professional Help

Seek immediate medical attention if pain worsens, swelling increases, or new symptoms (e.g., fever, redness) develop. Contact a healthcare provider if mobility does not improve with treatment or if there are signs of infection.

Tips for Medical Coders

Document the fracture's status (nonunion) and the encounter type (subsequent) clearly in the medical record. Ensure the left-hand specification and displacement are noted. Include details on prior treatments and imaging results to support the nonunion diagnosis. Verify that the code aligns with the clinical documentation and encounter context.