S42.155A Nondisplaced fracture of neck of scapula, left shoulder, initial encounter for closed fracture

Name of the Condition

• Nondisplaced fracture of neck of scapula, left shoulder, initial encounter for closed fracture

Summary

A nondisplaced fracture of the neck of the scapula, left shoulder, refers to a break in the narrow portion of the shoulder blade bone that connects the body of the scapula to the glenoid fossa (shoulder joint), where the bone fragments remain in their normal anatomical alignment. This condition affects the left shoulder and is classified as an initial encounter for a closed fracture, meaning the skin is intact and the injury is being addressed for the first time. The scapular neck plays a key role in shoulder stability and movement, and a nondisplaced fracture typically results from trauma that is less severe than that causing displacement.

Causes

Traumatic injury is the primary cause of this fracture. Common mechanisms include falls, motor vehicle accidents, sports-related impacts, or direct blows to the shoulder or back. The left shoulder may be affected due to the direction of impact or body positioning during the injury. High-energy trauma is not always required, as lower-impact events can still cause a nondisplaced fracture in certain circumstances.

Risk Factors

• Participation in contact sports or activities with a high risk of falls.
• Osteoporosis or other bone-weakening conditions.
• Advanced age, which may increase susceptibility to fractures from minor trauma.
• Previous shoulder or upper arm injuries that affect bone integrity.

Symptoms

• Pain in the shoulder or upper back, especially with movement.
• Swelling, bruising, or tenderness over the shoulder blade.
• Limited range of motion in the shoulder joint.
• Difficulty lifting or rotating the arm.
• In severe cases, visible deformity or instability.

Diagnosis

Diagnosis begins with a physical examination to assess pain, swelling, and range of motion. Imaging studies, such as X-rays or CT scans, are typically used to confirm the fracture and determine if it is nondisplaced. The left shoulder is specifically evaluated to rule out associated injuries. Documentation should note the absence of displacement and the closed nature of the fracture to support the diagnosis.

Treatment Options

Treatment for a nondisplaced fracture of the scapular neck often involves conservative management, such as immobilization with a sling to support the shoulder and allow healing. Pain management may include over-the-counter or prescription medications. Physical therapy is usually recommended after initial healing to restore strength and range of motion. Surgical intervention is rarely needed for nondisplaced fractures unless other complications arise.

Prognosis and Follow-Up

The prognosis for a nondisplaced fracture of the scapular neck is generally favorable, with most patients recovering fully without long-term functional impairment. Follow-up care typically includes regular monitoring to ensure proper healing and progression of physical therapy. Most individuals can return to normal activities within several weeks to months, depending on the severity of the injury and adherence to treatment.

Complications

While rare, complications can include nonunion (failure of the bone to heal), malunion (healing in an abnormal position), or persistent pain. Nerve or vascular injury is uncommon but may occur with severe trauma. Chronic shoulder instability or arthritis may develop in some cases, particularly if the fracture affects joint alignment.

Lifestyle & Prevention

To reduce the risk of scapular fractures, avoid high-impact activities without proper protection, such as wearing protective gear during sports. Maintain bone health through a balanced diet rich in calcium and vitamin D, and engage in regular weight-bearing exercise. Fall prevention strategies, such as removing tripping hazards at home, are particularly important for older adults.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or deformity after an injury, or if you cannot move your arm. Persistent pain, numbness, or tingling in the shoulder or arm, or signs of infection (e.g., fever, redness), also warrant prompt evaluation.

Tips for Medical Coders

When coding for S42.155A, ensure documentation specifies a nondisplaced fracture of the scapular neck, left shoulder, and confirms it is an initial encounter for a closed fracture. The "initial encounter" modifier indicates the fracture is being treated for the first time, and "closed" denotes an intact skin surface. Accurate documentation of the fracture type, location, and encounter stage is essential for correct code assignment.