S42.335 Nondisplaced oblique fracture of shaft of humerus, left arm

Name of the Condition

• Nondisplaced oblique fracture of shaft of humerus, left arm
• ICD Code: S42.335

Summary

This condition involves a break in the shaft (the long, central portion) of the humerus (the upper arm bone) on the left side, where the fracture line runs at an angle across the bone. The term "nondisplaced" indicates that the bone fragments remain in their normal alignment, with no significant separation or misalignment.

Causes

Nondisplaced oblique fractures of the humerus shaft typically result from direct trauma, such as falls, motor vehicle accidents, or high-impact injuries. The angled fracture line often occurs when force is applied at an angle to the bone, rather than directly along its length.

Risk Factors

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

Symptoms

• Sudden pain and swelling in the upper arm.
• Tenderness or bruising at the fracture site.
• Difficulty moving the arm or shoulder.
• Possible deformity or abnormal positioning of the arm.

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 determine its angle and displacement. Additional scans like CT or MRI may be ordered to evaluate soft tissue damage if needed.

Treatment Options

Treatment depends on the fracture’s stability and the patient’s overall health. Nondisplaced fractures often heal with immobilization, such as a sling or cast, to allow the bone to align naturally. Pain management and physical therapy may be recommended to restore function. Surgical intervention is rarely needed unless the fracture becomes unstable.

Prognosis and Follow-Up

Most nondisplaced oblique fractures of the humerus shaft heal well with proper immobilization and follow-up care. Recovery time varies but typically ranges from 6 to 12 weeks. Regular follow-up appointments with imaging may be scheduled to monitor healing progress.

Complications

While uncommon, potential complications include nonunion (failure to heal), malunion (improper healing), or nerve injury. Infection or chronic pain may occur if the fracture is open or improperly managed.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use protective gear during sports or activities with fall risk.
• Maintain bone health through a balanced diet and regular exercise.
• Address underlying conditions like osteoporosis to reduce fracture risk.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or deformity after an injury, or if you cannot move your arm. Contact your provider if pain worsens, or if you notice numbness, tingling, or signs of infection (e.g., redness, fever).

Tips for Medical Coders

Document the fracture’s location (left arm), pattern (oblique), and displacement status (nondisplaced) to ensure accurate coding. Include details about the mechanism of injury, imaging results, and treatment plan to support clinical specificity. Verify that the code aligns with the documented diagnosis and avoid assumptions about displacement or laterality.