S62.251K Displaced fracture of neck of first metacarpal bone, right hand, subsequent encounter for fracture with nonunion

Name of the Condition

• Displaced fracture of neck of first metacarpal bone, right hand, subsequent encounter for fracture with nonunion

Summary

This condition involves a displaced fracture of the neck of the first metacarpal bone (connecting the thumb to the wrist) in the right hand, where the fracture has failed to heal properly (nonunion) during a subsequent encounter for treatment. Displacement means the bone fragments are misaligned, and nonunion indicates the fracture site has not fused after an expected healing period, requiring further management.

Causes

Typically caused by direct trauma, such as a fall onto an outstretched hand, a forceful blow to the thumb, or a crushing injury. Nonunion may result from inadequate initial treatment, poor blood supply to the bone, infection, or excessive movement at the fracture site.

Risk Factors

• Participation in contact sports or activities with a high risk of falls.
• Osteoporosis or weakened bone structure, especially in older adults.
• Smoking, which impairs bone healing.
• Previous hand or thumb injuries that may have compromised bone integrity.
• Poor initial fracture management or noncompliance with immobilization.

Symptoms

• Persistent pain, swelling, and tenderness at the base of the thumb or hand.
• Bruising or discoloration around the injury site.
• Limited range of motion or difficulty moving the thumb.
• Visible deformity in severe cases.
• No improvement in symptoms despite prior treatment.

Diagnosis

Physical examination to assess pain, swelling, and mobility. Imaging tests, such as X-rays, CT scans, or MRIs, to confirm the fracture, evaluate displacement, and assess for nonunion (e.g., visible gap at the fracture site or lack of bone healing).

Treatment Options

• Surgical intervention: May include bone grafting, internal fixation (plates/screws), or external fixation to stabilize the fracture and promote healing.
• Immobilization: Continued use of a cast or splint to restrict movement and support healing.
• Physical therapy: To restore range of motion and strength once healing progresses.
• Pain management: Medications to alleviate discomfort during recovery.

Prognosis and Follow-Up

Prognosis depends on the severity of displacement, bone quality, and response to treatment. Nonunion fractures may require extended healing time or additional procedures. Regular follow-up with imaging is necessary to monitor progress and adjust treatment as needed.

Complications

• Chronic pain or stiffness in the thumb or hand.
• Persistent nonunion requiring further surgery.
• Arthritis in the thumb joint due to misalignment or delayed healing.
• Nerve or tendon damage from the original injury or treatment.

Lifestyle & Prevention

• Avoid high-impact activities until fully healed.
• Use protective gear during sports or manual labor.
• Maintain bone health through adequate nutrition (e.g., calcium, vitamin D) and exercise.
• Follow post-treatment instructions carefully to support healing.

When to Seek Professional Help

Seek care if pain worsens, swelling increases, or movement becomes more limited. Contact a healthcare provider if signs of infection (e.g., redness, pus) or new deformity appear.

Tips for Medical Coders

Document the subsequent encounter for fracture with nonunion, including details of prior treatment, imaging findings confirming nonunion, and any surgical or therapeutic interventions. Ensure the right-hand specification and displacement are clearly noted.