S42.262K Displaced fracture of lesser tuberosity of left humerus, subsequent encounter for fracture with nonunion

Name of the Condition

• Displaced fracture of lesser tuberosity of left humerus, subsequent encounter for fracture with nonunion (ICD Code: S42.262K)

Summary

This condition involves a displaced fracture of the lesser tuberosity, a bony prominence on the left humerus near the shoulder joint, where the fracture has failed to heal (nonunion) during follow-up care. The lesser tuberosity serves as an attachment point for the subscapularis tendon, and nonunion may affect muscle function or joint stability. This code is used for encounters after initial treatment when healing has not progressed as expected.

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. Nonunion can occur due to inadequate immobilization, poor blood supply to the bone, infection, or underlying conditions that impair healing.

Risk Factors

• Advanced age and osteoporosis, which reduce bone density and healing capacity.
• Participation in contact sports or activities with a high risk of falls.
• Smoking or poor nutrition, which can delay bone healing.
• Previous fractures or bone disorders that weaken the skeletal structure.
• Conditions like diabetes or vascular disease that affect circulation.

Symptoms

• Persistent or worsening pain in the shoulder or upper arm.
• Swelling, bruising, or visible deformity at the fracture site.
• Limited or no improvement in arm mobility over time.
• Possible clicking or grinding sensations during movement.
• 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 confirm nonunion by showing a persistent fracture line with no bridging bone. CT scans or MRIs may be used to evaluate bone healing and rule out other complications. Blood tests may check for underlying conditions affecting healing.

Treatment Options

Treatment depends on the severity of nonunion and patient factors. Options may include surgical intervention, such as open reduction and internal fixation (ORIF) with bone grafting, to stabilize the fracture and promote healing. Non-surgical approaches, like prolonged immobilization or electrical stimulation, may be considered for select cases. Physical therapy is often recommended to restore function and strength.

Prognosis and Follow-Up

Prognosis varies based on the cause of nonunion and treatment response. Surgical intervention generally offers better outcomes for restoring function, but recovery may take several months. Regular follow-up with imaging is necessary to monitor healing progress. Long-term management may involve ongoing therapy or adaptive strategies to manage residual symptoms.

Complications

• Chronic pain or stiffness in the shoulder.
• Reduced range of motion or functional impairment.
• Risk of further injury to the affected area.
• Potential need for additional surgeries if healing fails.
• Psychological impact from prolonged recovery or disability.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Follow prescribed rehabilitation plans to optimize healing.
• Maintain a balanced diet rich in calcium and vitamin D to support bone health.
• Quit smoking and limit alcohol, as both can impair bone healing.
• Use protective gear during sports or activities with fall risks.

When to Seek Professional Help

Seek immediate care if you experience severe pain, swelling, or deformity, or if you notice numbness or tingling in the hand or fingers. Contact your provider if pain worsens, mobility does not improve, or you develop new symptoms during follow-up care.

Tips for Medical Coders

Document the encounter as a subsequent visit for fracture with nonunion, specifying the left humerus and lesser tuberosity. Include details on imaging findings (e.g., X-ray confirmation of nonunion), treatment provided, and any underlying factors contributing to delayed healing. Ensure the encounter is coded after the initial fracture treatment phase and reflects ongoing management of the nonunion.