S62.162K Displaced fracture of pisiform, left wrist, subsequent encounter for fracture with nonunion

Name of the Condition

• Displaced fracture of pisiform, left wrist, subsequent encounter for fracture with nonunion

Summary

This condition involves a displaced fracture of the pisiform bone in the left wrist, with the fracture in a subsequent encounter phase and showing nonunion. The pisiform is a small, pea-shaped carpal bone located on the palmar (palm) side of the wrist, near the base of the pinky finger. Displacement means the bone fragments have shifted from their normal position, and nonunion indicates the fracture has failed to heal properly within the expected timeframe. This encounter typically occurs after initial treatment and focuses on managing the nonunion.

Causes

Typically caused by direct trauma to the left wrist, such as a fall onto an outstretched hand, a blow to the palmar side of the wrist, or a crushing injury. High-impact activities or accidents may also lead to this type of fracture. Nonunion can result from inadequate immobilization, poor blood supply to the bone, or infection.

Risk Factors

• Participation in contact sports or activities with a high risk of falls.
• Osteoporosis or weakened bone structure, especially in older adults.
• Previous wrist injuries or fractures.
• Smoking or poor nutrition, which can impair bone healing.

Symptoms

• Persistent pain, swelling, and tenderness in the palmar side of the left wrist.
• Bruising or discoloration around the injury site (may be chronic).
• Limited range of motion or difficulty moving the hand or fingers.
• Visible deformity in severe cases.

Diagnosis

Physical examination to assess pain, swelling, and wrist mobility. Imaging tests, such as X-rays, CT scans, or MRI, are used to confirm nonunion by showing a persistent gap between bone fragments or lack of callus formation. Additional tests may evaluate blood flow or infection.

Treatment Options

Treatment depends on the severity of nonunion and may include surgical intervention, such as bone grafting or internal fixation, to promote healing. Non-surgical options like immobilization or electrical stimulation may be considered for mild cases. Physical therapy is often recommended to restore function.

Prognosis and Follow-Up

Prognosis varies; surgical intervention often improves healing rates, but recovery may take several months. Regular follow-up with imaging is necessary to monitor progress. Long-term outcomes depend on the success of treatment and adherence to rehabilitation.

Complications

• Chronic pain or instability in the wrist.
• Arthritis or joint damage due to persistent nonunion.
• Nerve or tendon damage from the original injury or surgery.
• Infection at the surgical site (if applicable).

Lifestyle & Prevention

• Avoid high-risk activities that may cause wrist trauma.
• Maintain bone health through a balanced diet and regular exercise.
• Use protective gear during sports or manual labor.
• Follow post-injury care instructions to reduce nonunion risk.

When to Seek Professional Help

Seek medical attention 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 appear.

Tips for Medical Coders

Document the subsequent encounter for fracture with nonunion, including clinical notes confirming nonunion (e.g., imaging results, lack of healing progress). Ensure the left wrist and displacement are clearly specified. Code S62.162K is used for this condition; verify documentation aligns with the definition of nonunion and subsequent encounter.