S42.026A Nondisplaced fracture of shaft of unspecified clavicle, initial encounter for closed fracture

Name of the Condition

• Nondisplaced fracture of shaft of unspecified clavicle, initial encounter for closed fracture (ICD-10 Code: S42.026A)

Summary

A nondisplaced fracture of the shaft of the unspecified clavicle is a break in the middle portion of the collarbone where the bone fragments remain aligned. This condition involves the central third of the clavicle and is classified as closed, meaning the skin is intact. It typically results from trauma and is managed in the initial phase of care.

Causes

This fracture commonly occurs due to direct trauma to the shoulder or a fall onto an outstretched hand. High-impact events, such as motor vehicle accidents, sports injuries, or falls from a height, can apply force to the clavicle, leading to a break without displacement.

Risk Factors

Factors that increase the likelihood of this fracture include participation in contact sports, osteoporosis or weakened bone density, and older age due to increased fall risk. Activities involving repetitive upper-body stress or high-impact forces may also raise susceptibility.

Symptoms

Symptoms often include sudden pain in the shoulder or collarbone area, swelling, bruising, tenderness, and difficulty moving the shoulder. A visible bump or deformity may be present, though less pronounced than in displaced fractures. Pain typically worsens with arm movement or pressure on the site.

Diagnosis

Diagnosis involves a physical examination to assess pain, tenderness, and range of motion, followed by X-ray imaging to confirm the fracture and verify that the bone fragments are aligned. Additional imaging, such as CT scans, may be used if the fracture is subtle or if other injuries are suspected.

Treatment Options

Treatment often includes immobilization with a sling or brace to support the arm and reduce movement. Pain management with over-the-counter or prescription medications may be recommended. Physical therapy is typically introduced once initial healing occurs to restore strength and mobility. Most nondisplaced fractures heal without surgery.

Prognosis and Follow-Up

Prognosis is generally favorable, with most fractures healing within 6–8 weeks. Follow-up appointments monitor healing progress, often with repeat X-rays. Full recovery of shoulder function is expected, though some residual stiffness or mild discomfort may persist temporarily.

Complications

Complications are rare but can include nonunion (failure to heal), malunion (misalignment), or nerve injury. Infection is unlikely in closed fractures but may occur if the bone pierces the skin. Persistent pain or functional limitations should be evaluated promptly.

Lifestyle & Prevention

Preventive measures include using protective gear during contact sports, maintaining bone health through adequate calcium and vitamin D intake, and reducing fall risks by improving balance and home safety. Avoiding high-impact activities that strain the shoulder may lower fracture risk.

When to Seek Professional Help

Seek medical attention if pain is severe, swelling worsens, or movement becomes increasingly difficult. Immediate care is needed if the skin is broken, or if there are signs of nerve or vascular injury, such as numbness, tingling, or discoloration in the arm.

Tips for Medical Coders

Document the fracture as nondisplaced and specify it is a closed fracture in the initial encounter. Include details on the clavicle shaft location and confirm no displacement or open wound. Ensure the encounter is coded as initial (A) to reflect the first episode of care for this injury.