Codes / ICD10CM / S42.242

S42.242 4-part fracture of surgical neck of left humerus

ICD10CM code

ICD10CM

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Name of the Condition

  • 4-part fracture of surgical neck of left humerus
  • Medical Term: Proximal humerus fracture

Summary

This condition involves a complex fracture of the surgical neck of the left humerus, where the bone is broken into four distinct fragments. The surgical neck is the area just below the head of the humerus, near the shoulder joint, and this type of fracture often results in significant displacement or instability of the bone fragments.

Causes

Fractures of the surgical neck of the humerus typically result from high-impact trauma, such as falls onto the shoulder, motor vehicle accidents, or direct blows to the upper arm. Low-energy trauma may also cause this injury in individuals with weakened bones.

Risk Factors

  • Osteoporosis or reduced bone density, which increases susceptibility to fractures.
  • Advanced age, as bone strength naturally declines over time.
  • Participation in contact sports or activities with a high risk of falls or collisions.
  • Previous fractures or bone disorders that weaken the skeletal structure.

Symptoms

  • Severe pain in the shoulder or upper arm, often worsening with movement.
  • Swelling, bruising, and visible deformity at the fracture site.
  • Inability to move the arm or bear weight due to pain and instability.
  • Numbness or tingling in the hand or fingers if nerve involvement occurs.

Diagnosis

Physical examination to assess pain, range of motion, and deformity. Imaging tests, including X-rays or CT scans, are used to confirm the fracture pattern and extent of displacement.

Treatment Options

  • Surgical intervention to re-align and stabilize the bone fragments, often with plates, screws, or rods.
  • Pain management through medication.
  • Physical therapy to restore range of motion and strength after healing.

Prognosis and Follow-Up

Recovery depends on the severity of the fracture, treatment approach, and patient factors like age and bone health. Regular follow-up appointments monitor healing and functional recovery. Physical therapy is often recommended to optimize outcomes.

Complications

  • Nonunion or malunion of the fracture.
  • Nerve or blood vessel injury.
  • Shoulder stiffness or reduced mobility.
  • Post-traumatic arthritis.

Lifestyle & Prevention

  • Maintain bone health through adequate calcium and vitamin D intake.
  • Engage in weight-bearing exercises to strengthen bones.
  • Use protective gear during high-risk activities.
  • Fall prevention strategies, especially for older adults.

When to Seek Professional Help

Seek immediate medical attention for severe pain, visible deformity, inability to move the arm, or signs of nerve injury (e.g., numbness, tingling).

Tips for Medical Coders

Document the fracture pattern (4-part), anatomical location (surgical neck of left humerus), and any associated details (e.g., open vs. closed, displacement) to ensure accurate coding. Include clinical notes supporting the diagnosis and treatment provided.

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