S42.265P Nondisplaced fracture of lesser tuberosity of left humerus, subsequent encounter for fracture with malunion

Name of the Condition

• Nondisplaced fracture of lesser tuberosity of left humerus, subsequent encounter for fracture with malunion (ICD Code: S42.265P)

Summary

This condition involves a nondisplaced fracture of the lesser tuberosity, a bony prominence on the front of the left humerus near the shoulder joint, during a subsequent encounter for fracture with malunion. The fracture remains nondisplaced, meaning bone fragments are not significantly separated, but malunion indicates the bone has healed in an abnormal position. This may affect shoulder function and the attachment of the subscapularis tendon.

Causes

Nondisplaced fractures of the lesser tuberosity typically result from direct trauma, such as falls onto the shoulder, motor vehicle accidents, or high-impact sports injuries. Malunion occurs when the fracture heals improperly, often due to inadequate immobilization, poor blood supply, or delayed treatment.

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.
• Inadequate immobilization or delayed treatment of the initial fracture.

Symptoms

• Persistent pain in the shoulder or upper arm.
• Swelling, bruising, and tenderness at the fracture site.
• Limited range of motion in the shoulder.
• Visible deformity or abnormal bone alignment.
• Difficulty lifting or moving the arm.

Diagnosis

Physical examination to assess pain, range of motion, and deformity. Imaging tests, including X-rays, to visualize the fracture pattern, displacement, and malunion. CT scans or MRIs may be used for detailed assessment of bone healing and joint alignment.

Treatment Options

• Immobilization with a sling or brace to support healing.
• Physical therapy to restore range of motion and strength.
• Pain management with medications or injections.
• Surgical intervention may be considered for severe malunion or functional impairment.

Prognosis and Follow-Up

Prognosis depends on the degree of malunion and response to treatment. Most patients recover with conservative management, but some may experience long-term shoulder stiffness or weakness. Regular follow-up with imaging and functional assessments is recommended to monitor healing and adjust treatment.

Complications

• Chronic pain or discomfort.
• Reduced shoulder mobility or strength.
• Nerve or blood vessel damage near the fracture site.
• Increased risk of future fractures due to weakened bone.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Engage in low-impact exercises to maintain joint flexibility.
• Ensure adequate calcium and vitamin D intake for bone health.
• Use protective gear during sports or activities with fall risks.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or deformity after an injury. Consult a healthcare provider if symptoms worsen or do not improve with treatment, or if you notice numbness, tingling, or weakness in the arm or hand.

Tips for Medical Coders

Document the subsequent encounter for fracture with malunion, including details of the fracture's healing status and any functional impact. Ensure the code S42.265P is used only when the fracture is nondisplaced and malunion is present during a subsequent encounter. Include clinical notes supporting the diagnosis and treatment plan for accurate coding.