S62.343K Nondisplaced fracture of base of third metacarpal bone, left hand, subsequent encounter for fracture with nonunion

Name of the Condition

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

Summary

A nondisplaced fracture of the base of the third metacarpal bone in the left hand involves a small break or crack in the bone that connects to the middle finger, where the bone fragments remain in proper alignment. This code applies to a subsequent encounter for a fracture that has failed to heal (nonunion) after an initial injury. The fracture typically results from trauma or direct impact to the hand, and the nonunion indicates delayed or incomplete healing.

Causes

Direct trauma, such as a fall onto the hand or a blow to the area, is the primary cause. Sports-related injuries, accidents, or repetitive stress may also lead to this fracture. Nonunion can occur due to inadequate immobilization, poor blood supply to the bone, or other factors that impede healing.

Risk Factors

• Participation in activities with a risk of hand trauma, such as contact sports or manual labor.
• Reduced bone density, which can increase susceptibility to fractures and delay healing.
• Inadequate hand protection during high-risk activities.
• Conditions that affect bone healing, such as diabetes or smoking.

Symptoms

• Persistent pain and tenderness at the base of the third metacarpal bone.
• Swelling and bruising around the affected area.
• Difficulty or pain when moving the middle finger.
• Possible clicking or grinding sensation with movement.

Diagnosis

Physical examination by a healthcare provider to assess tenderness, swelling, or deformity. Imaging tests, such as X-rays, are used to confirm the fracture and verify nonunion (lack of bone healing over time). Additional tests, like CT scans, may be used to evaluate bone alignment and healing progress.

Treatment Options

• Immobilization with a splint or cast: To stabilize the bone and promote healing.
• Surgical intervention: May be required to realign the bone or use fixation devices (e.g., plates, screws) if nonunion persists.
• Pain management using over-the-counter or prescription medications.
• Physical therapy to restore range of motion and strength after healing.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and response to treatment. Most patients recover with appropriate care, but healing may take longer than typical fractures. Regular follow-up appointments and imaging are necessary to monitor progress. Return to normal activities is gradual, with restrictions during the healing period.

Complications

• Chronic pain or discomfort.
• Limited range of motion in the middle finger.
• Risk of further injury to the weakened bone.
• Potential need for additional surgery if nonunion does not resolve.

Lifestyle & Prevention

• Use protective gear during high-risk activities (e.g., sports, manual labor).
• Maintain bone health through a balanced diet rich in calcium and vitamin D.
• Avoid smoking and limit alcohol, as these can impair bone healing.
• Follow post-injury care instructions to reduce the risk of nonunion.

When to Seek Professional Help

Seek medical attention if pain worsens, swelling increases, or movement becomes more difficult. Contact a healthcare provider if symptoms persist beyond the expected healing time or if there are signs of infection (e.g., redness, fever).

Tips for Medical Coders

This code (S62.343K) is used for a subsequent encounter for a nondisplaced fracture of the base of the third metacarpal bone in the left hand with nonunion. Documentation must specify the fracture site, laterality (left hand), and the presence of nonunion. Ensure the encounter is classified as "subsequent" and that the fracture is confirmed as nondisplaced with evidence of failed healing.