S49.03 Salter-Harris Type III physeal fracture of upper end of humerus

Name of the Condition

• Salter-Harris Type III physeal fracture of upper end of humerus (ICD-10 Code: S49.03)

Summary

This code describes a Salter-Harris Type III fracture involving the growth plate (physeal) at the upper end of the humerus, the bone of the upper arm. This type of fracture occurs when a portion of the epiphysis (the end of the bone) separates along with the growth plate, typically in children and adolescents due to the relative weakness of the physis during development.

Causes

Trauma, such as a fall onto an outstretched hand or a direct blow to the shoulder, is the primary cause. These injuries often occur during sports, play, or accidents involving forceful arm movement.

Risk Factors

• Age (most common in children and adolescents with open growth plates)
• Participation in high-impact sports or activities
• Prior growth plate injuries

Symptoms

• Pain and swelling at the shoulder or upper arm
• Limited range of motion
• Visible deformity in severe cases
• Difficulty moving the arm

Diagnosis

Diagnosis relies on a physical examination to assess pain, swelling, and range of motion, combined with imaging studies like X-rays to visualize the fracture and confirm its location at the growth plate. A detailed patient history, including the mechanism of injury, is also important.

Treatment Options

• Immobilization: A sling or cast may be used to stabilize the arm during healing.
• Closed reduction: Manual realignment of the bone fragments without surgery.
• Surgical intervention: Required for displaced or unstable fractures to restore proper alignment and joint surface integrity.
• Treatment aims to preserve growth potential and restore function.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture and the accuracy of reduction. Close follow-up with imaging is often necessary to monitor for growth disturbances or joint deformity. Long-term outcomes are generally favorable with appropriate treatment.

Complications

• Growth plate disturbance leading to limb length discrepancy or angular deformity
• Joint stiffness or limited range of motion
• Avascular necrosis of the epiphysis
• Post-traumatic arthritis

Lifestyle & Prevention

• Use protective gear during sports or high-risk activities.
• Ensure proper supervision of children during play to minimize falls.
• Maintain bone health through adequate nutrition and exercise.

When to Seek Professional Help

Seek immediate medical attention if there is severe pain, visible deformity, inability to move the arm, or signs of nerve or vascular compromise (e.g., numbness, discoloration).

Tips for Medical Coders

Document the specific Salter-Harris Type III classification and confirm the fracture involves the upper end of the humerus. Ensure the medical record supports the diagnosis with details of the fracture pattern and any associated injuries.