S62.231K Other displaced fracture of base of first metacarpal bone, right hand, subsequent encounter for fracture with nonunion

Name of the Condition

• Other displaced fracture of base of first metacarpal bone, right hand, subsequent encounter for fracture with nonunion

Summary

This condition involves a displaced fracture at the base of the first metacarpal bone (connecting the thumb to the wrist) in the right hand. It is a subsequent encounter, meaning the patient is receiving care after the initial treatment phase, and the fracture has failed to heal (nonunion). Nonunion indicates the bone fragments have not fused properly, potentially affecting joint stability and function. Management focuses on addressing the nonunion and restoring alignment.

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 during 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 hand or thumb injuries that may have compromised bone integrity.
• Smoking or other factors that impair bone healing.

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.
• Sensation of instability or clicking in the joint.

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. Additional tests may be used to rule out infection or assess bone healing.

Treatment Options

• Surgical intervention: Procedures to realign the bone fragments and promote healing, such as internal fixation with pins, screws, or plates.
• Bone grafting: Using bone tissue to stimulate healing in cases of nonunion.
• Immobilization: Casts or splints to stabilize the area during recovery.
• Physical therapy: Exercises to restore strength and range of motion after healing.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion, overall health, and response to treatment. Regular follow-up with imaging is necessary to monitor healing. Full recovery may take several months, and some patients may experience long-term joint stiffness or reduced function.

Complications

• Chronic pain or discomfort.
• Persistent nonunion requiring additional surgery.
• Infection, especially if surgical intervention is needed.
• Arthritis or joint degeneration due to misalignment.
• Reduced grip strength or thumb mobility.

Lifestyle & Prevention

• Avoid high-impact activities until fully healed.
• Use protective gear during sports or manual labor.
• Maintain bone health through a balanced diet and regular exercise.
• Follow post-treatment instructions carefully to support healing.

When to Seek Professional Help

Seek immediate care if you experience severe pain, swelling, or deformity after an injury. Contact a healthcare provider if symptoms worsen or do not improve with initial treatment, or if you notice signs of infection (e.g., redness, warmth, fever).

Tips for Medical Coders

Document the encounter as a subsequent visit for fracture with nonunion. Include details on the fracture's location (base of the right first metacarpal), displacement, and confirmation of nonunion. Ensure documentation supports the need for ongoing care and any surgical or therapeutic interventions.