S42.036K Nondisplaced fracture of lateral end of unspecified clavicle, subsequent encounter for fracture with nonunion

Name of the Condition

• Nondisplaced fracture of lateral end of unspecified clavicle, subsequent encounter for fracture with nonunion

Summary

A nondisplaced fracture of the lateral end of the unspecified clavicle is a break in the outer portion of the collarbone where the bone fragments remain aligned. This subsequent encounter indicates ongoing care for the fracture, and the presence of nonunion means the bone has failed to heal properly within the expected timeframe. The fracture involves the lateral (outer) segment of the clavicle, which connects to the shoulder.

Causes

Clavicle fractures typically result from direct trauma to the shoulder, such as a fall onto the shoulder, a blow to the area, or a forceful impact during sports or accidents. Falls onto an outstretched hand may also transmit stress to the clavicle, leading to fracture. Nonunion can occur due to inadequate immobilization, poor blood supply to the fracture site, infection, or excessive movement before healing.

Risk Factors

• Participation in contact sports or high-impact activities.
• Osteoporosis or weakened bone density.
• Older age, due to increased fall risk and bone fragility.
• Previous shoulder or clavicle injuries.
• Smoking, which impairs bone healing.
• Certain medical conditions affecting bone metabolism.

Symptoms

• Persistent pain, swelling, or tenderness over the lateral clavicle.
• Bruising or discoloration around the shoulder.
• Difficulty moving the arm or shoulder.
• A visible bump or deformity at the fracture site.
• No improvement in symptoms over time, indicating delayed healing.

Diagnosis

Diagnosis begins with a physical examination to assess pain, swelling, and deformity. Imaging, typically X-rays, confirms the fracture and evaluates for nonunion by showing a persistent gap or lack of bone healing. In some cases, CT or MRI may be used to assess bone union or identify underlying issues contributing to nonunion.

Treatment Options

Treatment focuses on promoting bone healing and may include immobilization with a sling, pain management, and physical therapy to restore function. Surgical intervention, such as bone grafting or internal fixation, may be considered for persistent nonunion. Follow-up imaging monitors progress.

Prognosis and Follow-Up

Prognosis depends on the severity of nonunion and response to treatment. Most patients achieve healing with appropriate management, but recovery may take longer than typical fractures. Regular follow-up with imaging and clinical assessments is essential to track healing and adjust treatment as needed.

Complications

• Chronic pain or discomfort.
• Limited shoulder mobility.
• Nerve or blood vessel damage near the fracture site.
• Infection (if surgical intervention is required).
• Future fractures due to weakened bone.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Maintain a balanced diet rich in calcium and vitamin D to support bone health.
• Use protective gear during sports or activities with fall risks.
• Follow post-injury care instructions to promote healing.

When to Seek Professional Help

Seek medical attention if pain worsens, swelling increases, or mobility declines. Contact a provider if symptoms persist beyond expected healing timelines or if new deformities or numbness develop.

Tips for Medical Coders

Document the fracture type (nondisplaced), location (lateral end of unspecified clavicle), and the presence of nonunion. Note the encounter type (subsequent) and any contributing factors to nonunion. Ensure clinical documentation supports the diagnosis and treatment provided.