S42.266 Nondisplaced fracture of lesser tuberosity of unspecified humerus

Name of the Condition

• Nondisplaced fracture of lesser tuberosity of unspecified humerus (ICD Code: S42.266)

Summary

This condition involves a fracture of the lesser tuberosity, a bony prominence on the humerus bone near the shoulder joint, where the bone fragments remain aligned without displacement. The lesser tuberosity serves as an attachment point for the subscapularis muscle, and fractures in this area may affect muscle function or joint stability.

Causes

Fractures of the lesser tuberosity typically 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.

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 visible deformity at the fracture site.
• 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. 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.

Treatment Options

• Immobilization with a sling or brace to allow healing.
• Pain management with medications or ice therapy.
• Physical therapy to restore strength and mobility once healing progresses.
• Surgical intervention if the fracture is unstable or fails to heal with conservative measures.

Prognosis and Follow-Up

Most nondisplaced fractures heal well with conservative treatment, though recovery may take several weeks to months. Follow-up appointments monitor healing progress and adjust treatment as needed. Full function often returns, but some residual stiffness or weakness may persist.

Complications

• Nonunion or delayed healing if the fracture does not stabilize.
• Avascular necrosis of the humeral head due to disrupted blood supply.
• Nerve or blood vessel damage from the injury or treatment.
• Chronic pain or arthritis in the shoulder joint over time.

Lifestyle & Prevention

• Use protective gear during high-risk activities like sports.
• Maintain bone health through diet and exercise to reduce fracture risk.
• Avoid falls by modifying home environments (e.g., removing tripping hazards).
• Strengthen shoulder muscles to improve stability and reduce injury likelihood.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, inability to move the arm, visible deformity, or signs of nerve involvement (e.g., numbness, tingling). Follow up with a healthcare provider if pain worsens or does not improve with initial treatment.

Tips for Medical Coders

Document the fracture as nondisplaced and specify the humerus as "unspecified" unless laterality is confirmed. Include details on trauma mechanism, imaging results, and treatment approach to support code accuracy. Ensure documentation aligns with clinical findings to avoid coding discrepancies.