S42.263A Displaced fracture of lesser tuberosity of unspecified humerus, initial encounter for closed fracture

Name of the Condition

• Displaced fracture of lesser tuberosity of unspecified humerus, initial encounter for closed fracture (ICD Code: S42.263A)

Summary

This condition involves a displaced fracture of the lesser tuberosity, a bony prominence on the humerus near the shoulder joint. The fracture is characterized by the separation of bone fragments, which may affect the attachment of the subscapularis tendon and surrounding structures. The term "unspecified humerus" indicates the side is not documented, and "initial encounter for closed fracture" specifies this is the first treatment for a fracture without an open wound.

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.

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 stabilize the fracture.
• Pain management through medications or ice therapy.
• Surgical intervention, such as open reduction and internal fixation, for severe displacement or instability.
• Physical therapy to restore strength and mobility after healing.

Prognosis and Follow-Up

Most fractures heal within 6–8 weeks with proper immobilization and care. Follow-up appointments monitor healing progress and adjust treatment as needed. Full recovery of function depends on the severity of the fracture and adherence to rehabilitation.

Complications

• Nonunion or malunion of the fracture.
• Nerve or blood vessel damage near the shoulder.
• Chronic pain or reduced range of motion.
• Post-traumatic arthritis in the shoulder joint.

Lifestyle & Prevention

• Use protective gear during high-risk activities.
• Maintain bone health through calcium and vitamin D intake.
• Avoid falls by modifying home environments (e.g., removing tripping hazards).
• Engage in strength training to support joint stability.

When to Seek Professional Help

Seek immediate care for severe pain, visible deformity, or inability to move the arm. Contact a healthcare provider if symptoms worsen or do not improve with initial treatment.

Tips for Medical Coders

Document the fracture as displaced and specify the encounter as initial for a closed fracture. Ensure the humerus is coded as "unspecified" if the side is not documented. Include details about trauma mechanism or comorbidities to support coding accuracy.