S62.155 Nondisplaced fracture of hook process of hamate [unciform] bone, left wrist

Name of the Condition

• Nondisplaced fracture of hook process of hamate [unciform] bone, left wrist

Summary

This condition refers to a break or crack in the hook process of the hamate bone, a small carpal bone in the wrist, without displacement of bone fragments. The hamate bone is located on the ulnar (pinky) side of the wrist and contributes to wrist stability and grip function. Nondisplaced fractures mean the bone fragments remain aligned, which may influence treatment and healing. Fractures in this area typically result from trauma and require evaluation to confirm the diagnosis and determine appropriate care.

Causes

Usually caused by direct trauma to the wrist, such as a fall onto an outstretched hand, a blow to the wrist, or a twisting injury. High-impact activities or accidents may also lead to fractures in this specific bone. The hook process of the hamate is particularly vulnerable to injury from forceful impacts or repetitive stress.

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.
• Activities involving repetitive wrist motion or forceful gripping.

Symptoms

• Pain, swelling, and tenderness on the ulnar side of the left wrist.
• Bruising or discoloration around the injury site.
• 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 MRIs, to confirm the fracture and evaluate its extent and alignment. Nondisplaced fractures may require careful imaging to detect subtle breaks.

Treatment Options

• Immobilization: Using a cast, splint, or brace to stabilize the wrist and promote healing.
• Pain management: Over-the-counter or prescription medications to reduce discomfort and inflammation.
• Physical therapy: Exercises to restore strength and range of motion once healing progresses.
• Surgical intervention: Rarely needed for nondisplaced fractures, but may be considered if instability or other complications arise.

Prognosis and Follow-Up

Most nondisplaced fractures heal well with proper immobilization and rest. Follow-up appointments are typically scheduled to monitor healing and adjust treatment as needed. Full recovery may take several weeks to months, depending on the individual and injury severity.

Complications

• Delayed healing or nonunion if the fracture is not properly immobilized.
• Chronic pain or stiffness in the wrist.
• Nerve or tendon irritation near the fracture site.
• Risk of displacement if the wrist is not adequately protected during healing.

Lifestyle & Prevention

• Use protective gear during high-risk activities, such as sports or manual labor.
• Maintain bone health through a balanced diet and regular exercise.
• Avoid repetitive or forceful wrist movements that may increase injury risk.
• Practice fall prevention techniques, especially for older adults.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or deformity after a wrist injury. Contact a healthcare provider if symptoms worsen or do not improve with initial care, or if you notice numbness, tingling, or loss of function in the hand or fingers.

Tips for Medical Coders

Document the specific location (left wrist) and the nondisplaced nature of the fracture. Ensure clinical notes support the absence of fragment displacement and specify the affected side. Code S62.155 is appropriate for this condition; verify documentation aligns with the code’s definition to avoid miscoding.