S42.322 Displaced transverse fracture of shaft of humerus, left arm

Name of the Condition

• Displaced transverse fracture of shaft of humerus, left arm
• ICD Code: S42.322

Summary

This condition involves a complete break across the shaft (long, central portion) of the humerus, the bone in the upper arm, with the fracture line running horizontally across the bone. The term "displaced" indicates that the bone fragments are not aligned, and "left arm" specifies the affected side. This type of fracture typically results from trauma and may affect arm function depending on severity.

Causes

Displaced transverse fractures of the humerus shaft are usually caused by direct trauma, such as falls, motor vehicle accidents, or high-impact injuries. The force applied to the arm often results in a clean, horizontal break with separation of the bone fragments.

Risk Factors

• Participation in contact sports or activities with a risk of falls.
• Osteoporosis or other bone-weakening conditions.
• Advanced age, which may reduce bone density.
• Previous fractures in the upper arm.

Symptoms

• Sudden, severe pain in the left upper arm.
• Swelling, bruising, or tenderness at the fracture site.
• Difficulty moving the arm or shoulder.
• Visible deformity or abnormal positioning of the arm.
• Possible numbness or tingling if nerves are affected.

Diagnosis

Diagnosis is made through a physical examination to assess pain, swelling, and mobility. Imaging tests, such as X-rays, are typically used to confirm the fracture and evaluate displacement. Additional imaging, like CT scans, may be used for complex cases.

Treatment Options

Treatment depends on fracture severity and patient factors. Options include immobilization with a splint or cast, closed reduction (manual realignment), or surgical intervention with plates, screws, or intramedullary nails. Physical therapy is often recommended during recovery to restore function.

Prognosis and Follow-Up

Prognosis is generally good with appropriate treatment, though recovery time varies. Follow-up appointments monitor healing, alignment, and functional recovery. Most patients regain full arm use, but stiffness or strength deficits may persist in severe cases.

Complications

Potential complications include nonunion (failure to heal), malunion (poor alignment), nerve injury (e.g., radial nerve palsy), infection (if surgical), or chronic pain. Early intervention reduces these risks.

Lifestyle & Prevention

• Use protective gear during high-risk activities.
• Maintain bone health with adequate calcium and vitamin D.
• Avoid falls by modifying home environments (e.g., removing tripping hazards).
• Engage in strength training to support bone density.

When to Seek Professional Help

Seek immediate care for severe pain, visible deformity, inability to move the arm, or signs of nerve damage (numbness, tingling). Follow up with a healthcare provider if pain worsens or does not improve with treatment.

Tips for Medical Coders

Document the fracture type (displaced transverse), location (shaft of humerus), and affected side (left arm) clearly. Include details on displacement, treatment approach, and any associated complications to ensure accurate coding. Verify documentation aligns with clinical findings.