S42.262B Displaced fracture of lesser tuberosity of left humerus, initial encounter for open fracture

Name of the Condition

• Displaced fracture of lesser tuberosity of left humerus, initial encounter for open fracture (ICD Code: S42.262B)

Summary

This condition involves a displaced fracture of the lesser tuberosity, a bony prominence on the front of the left humerus near the shoulder joint, with an open fracture (exposing the bone to the external environment). The fracture is characterized by the separation of bone fragments, which may affect the attachment of the subscapularis tendon and surrounding structures. The "initial encounter" indicates this is the first episode of care for the open fracture.

Causes

Displaced fractures of the lesser tuberosity typically result from direct trauma, such as a fall onto the shoulder or a forceful pull on the arm. High-impact injuries, including motor vehicle accidents or sports-related collisions, may also cause this type of fracture. Open fractures occur when the broken bone pierces the skin, often due to significant force or a sharp fragment.

Risk Factors

• Advanced age and osteoporosis, which reduce bone density.
• Participation in contact sports or activities with a high risk of falls.
• Previous fractures or bone disorders that weaken the skeletal structure.
• High-impact trauma, which increases the likelihood of open fractures.

Symptoms

• Intense pain in the shoulder or upper arm.
• Swelling, bruising, and visible deformity at the fracture site.
• Open wound at the fracture site, exposing bone or tissue.
• Inability to move the arm or bear weight.
• Numbness or tingling in the hand or fingers if nerve involvement occurs.

Diagnosis

Physical examination to assess pain, range of motion, and deformity, including evaluation of the open wound. Imaging tests, including X-rays, to visualize the fracture pattern and displacement. CT scans or MRIs may be used for detailed assessment of complex fractures or soft tissue damage. Wound inspection to determine the extent of the open fracture.

Treatment Options

• Immediate wound care to clean and stabilize the open fracture.
• Surgical intervention to realign and fix the displaced bone fragments, often using plates, screws, or pins.
• Antibiotics to prevent infection due to the open wound.
• Pain management and immobilization with a sling or brace.
• Physical therapy to restore range of motion and strength after healing.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, the success of treatment, and the risk of infection. Most patients recover with proper care, but open fractures carry a higher risk of complications. Follow-up appointments are necessary to monitor healing, remove hardware if needed, and assess functional recovery. Physical therapy is often required to restore full arm function.

Complications

• Infection at the open wound site.
• Nerve or blood vessel damage.
• Nonunion or malunion of the fracture.
• Chronic pain or stiffness in the shoulder.
• Reduced range of motion or strength in the arm.

Lifestyle & Prevention

• Use protective gear during contact sports or high-risk activities.
• Maintain bone health through a balanced diet and regular exercise.
• Avoid falls by using assistive devices if needed, especially in older adults.
• Seek prompt medical care for any shoulder injury to prevent complications.

When to Seek Professional Help

• Severe pain or inability to move the arm.
• Visible deformity or open wound at the shoulder.
• Numbness, tingling, or weakness in the hand or fingers.
• Signs of infection, such as redness, swelling, or pus at the wound site.

Tips for Medical Coders

Document the fracture type (displaced), location (lesser tuberosity of left humerus), and encounter type (initial for open fracture) clearly. Note the presence of an open wound and any associated complications. Ensure the code S42.262B is used for the initial encounter of an open, displaced fracture of the lesser tuberosity of the left humerus.