S42.125 Nondisplaced fracture of acromial process, left shoulder

Name of the Condition

• Nondisplaced fracture of acromial process, left shoulder

Summary

A nondisplaced fracture of the acromial process of the left shoulder involves a break in the bony projection (acromion) of the scapula where the bone fragments remain aligned. The acromial process forms part of the shoulder's roof and connects to the clavicle, contributing to joint stability. This injury typically results from trauma and may affect shoulder function due to pain or associated soft tissue damage, though alignment is preserved.

Causes

Traumatic injury is the primary cause, often from a direct blow to the shoulder, a fall onto the shoulder, or a forceful impact during activities like sports or accidents. High-energy events, such as motor vehicle collisions, can also lead to this type of fracture.

Risk Factors

• Participation in contact sports or activities with a risk of shoulder impact.
• Osteoporosis or conditions that weaken bone density.
• Advanced age, which may increase susceptibility to fractures from minor trauma.
• Previous shoulder injuries that compromise bone integrity.

Symptoms

• Pain localized to the top of the shoulder, especially with movement.
• Swelling, bruising, or tenderness over the acromial area.
• Limited range of motion in the shoulder joint.
• Difficulty lifting or rotating the arm.
• In severe cases, a visible deformity or instability may be present.

Diagnosis

Diagnosis begins with a physical examination to assess pain, swelling, and tenderness over the acromial process. Imaging studies, typically X-rays, are used to confirm the fracture and verify that the bone fragments remain aligned (nondisplaced). Additional imaging, such as CT or MRI, may be ordered if soft tissue damage or associated injuries are suspected.

Treatment Options

Treatment focuses on pain management and restoring function. Conservative measures include rest, ice, and over-the-counter or prescription pain relievers. A sling may be used to immobilize the shoulder temporarily. Physical therapy is often recommended to regain strength and range of motion once initial healing occurs. Surgical intervention is rarely needed for nondisplaced fractures unless there is significant soft tissue involvement or instability.

Prognosis and Follow-Up

Most nondisplaced fractures of the acromial process heal well with conservative treatment. Full recovery typically occurs within 6 to 8 weeks, though some stiffness or discomfort may persist. Follow-up appointments with a healthcare provider are important to monitor healing and adjust treatment as needed. Physical therapy may be continued to optimize shoulder function.

Complications

Complications are uncommon but may include persistent pain, limited shoulder mobility, or post-traumatic arthritis. In rare cases, malunion (healing in a non-anatomic position) or nonunion (failure to heal) can occur, requiring further intervention.

Lifestyle & Prevention

• Avoid high-impact activities or contact sports until cleared by a healthcare provider.
• Use proper protective gear during sports or activities with a risk of shoulder injury.
• Maintain bone health through a balanced diet rich in calcium and vitamin D, and engage in weight-bearing exercise as recommended.
• Practice fall prevention strategies, especially for older adults, to reduce fracture risk.

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, visible deformity, inability to move the shoulder, or signs of infection (e.g., fever, increased redness, or drainage). Follow up with a healthcare provider if pain worsens, does not improve with rest, or if you develop new symptoms like numbness or weakness in the arm.

Tips for Medical Coders

Document the specific location (left shoulder) and fracture type (nondisplaced) to ensure accurate coding. Include details about the mechanism of injury, imaging findings, and treatment plan to support code assignment. Note any associated injuries or comorbidities that may affect coding or reimbursement.