S42.266A Nondisplaced fracture of lesser tuberosity of unspecified humerus, initial encounter for closed fracture

Name of the Condition

• Nondisplaced fracture of lesser tuberosity of unspecified humerus, initial encounter for closed fracture (ICD Code: S42.266A)

Summary

This condition involves a nondisplaced fracture of the lesser tuberosity, a bony prominence on the humerus near the shoulder joint. The fracture is characterized by a break in the bone without significant separation of fragments, typically occurring during the initial encounter for a closed fracture (no open wound). The lesser tuberosity serves as an attachment point for the subscapularis muscle, and while the fracture is nondisplaced, it may still impact muscle function or joint stability.

Causes

Nondisplaced fractures of the lesser tuberosity often result from direct trauma, such as falls onto the shoulder, motor vehicle accidents, or high-impact sports injuries. Low-energy trauma may also cause this type of fracture in individuals with weakened bones, though the nondisplaced nature suggests less force than a displaced fracture.

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.

Symptoms

• Intense pain in the shoulder or upper arm.
• Swelling, bruising, and tenderness at the fracture site.
• Limited range of motion in the shoulder or arm.
• 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, to visualize the fracture pattern and confirm nondisplacement. CT scans or MRIs may be used for detailed assessment of complex fractures or soft tissue damage.

Treatment Options

• Immobilization with a sling or brace to support healing.
• Pain management with medications or ice therapy.
• Physical therapy to restore range of motion and strength once healing progresses.
• Surgical intervention is rare for nondisplaced fractures but may be considered if displacement occurs or if there is significant soft tissue involvement.

Prognosis and Follow-Up

Most nondisplaced fractures heal well with conservative treatment, and full function often returns within 6–12 weeks. Follow-up appointments may include repeat imaging to confirm healing and assess progress. Physical therapy is typically recommended to prevent stiffness and restore mobility.

Complications

• Delayed union or nonunion of the fracture.
• Chronic pain or stiffness in the shoulder.
• Nerve or blood vessel damage (rare).
• Post-traumatic arthritis in the shoulder joint.

Lifestyle & Prevention

• Use protective gear during high-risk activities (e.g., sports).
• Maintain bone health with calcium and vitamin D intake.
• Avoid falls by modifying home environments (e.g., removing tripping hazards).

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, inability to move the arm, visible deformity, or signs of infection (e.g., fever, redness, drainage) at the fracture site.

Tips for Medical Coders

Document the fracture as nondisplaced and specify the initial encounter for a closed fracture. Include details about the humerus (unspecified) and the lesser tuberosity to ensure accurate coding. Note the absence of open wounds or displacement to support the use of this code.