S59.039 Salter-Harris Type III physeal fracture of lower end of ulna, unspecified arm

Name of the Condition

• Salter-Harris Type III physeal fracture of lower end of ulna, unspecified arm

Summary

This condition involves a Salter-Harris Type III fracture of the growth plate (physeal) at the lower end of the ulna bone in an unspecified arm. It typically affects children and adolescents, where the fracture extends through the physis (growth plate) and into the epiphysis, potentially disrupting joint surfaces. The injury may result from trauma to the forearm, particularly near the wrist joint.

Causes

Salter-Harris Type III physeal fractures often occur due to direct impact, such as a fall onto an outstretched hand, or from forceful twisting of the forearm. These injuries are common in activities involving sudden stops or collisions, where the growth plate is weaker than surrounding bone.

Risk Factors

• Children and adolescents are at higher risk due to the presence of growth plates.
• Participation in contact sports or activities with a high likelihood of falls increases risk.
• Certain genetic or metabolic conditions affecting bone development may also elevate susceptibility.

Symptoms

• Pain and swelling near the wrist or forearm.
• Difficulty moving the wrist or hand.
• Tenderness to touch at the fracture site.
• Possible bruising around the affected area.

Diagnosis

Physical examination by a healthcare professional to assess pain, swelling, and range of motion. Imaging tests, especially X-rays, are used to confirm the fracture type and extent. The Salter-Harris classification helps determine the fracture pattern and guide treatment.

Treatment Options

Treatment depends on fracture severity and displacement. Nondisplaced fractures may be managed with immobilization (e.g., casting) and activity restriction. Displaced fractures often require closed or open reduction to realign the bone, followed by immobilization. Surgical intervention may be needed for complex cases to restore joint alignment and stability.

Prognosis and Follow-Up

Prognosis is generally favorable with appropriate treatment, though outcomes depend on fracture displacement, age, and adherence to follow-up care. Regular monitoring ensures proper healing and identifies complications like growth disturbances. Physical therapy may be recommended to restore function and strength.

Complications

Potential complications include growth plate damage leading to limb length discrepancies or angular deformities, joint stiffness, or arthritis. Infection or nonunion may occur with surgical intervention. Early detection and management reduce long-term risks.

Lifestyle & Prevention

Preventive measures include using protective gear during sports, ensuring safe play environments, and teaching proper falling techniques. Maintaining bone health through adequate nutrition (e.g., calcium, vitamin D) supports overall skeletal strength.

When to Seek Professional Help

Seek immediate medical attention for severe pain, inability to move the arm, visible deformity, or signs of infection (e.g., fever, redness). Persistent pain or swelling after injury also warrants evaluation to rule out complications.

Tips for Medical Coders

Use code S59.039 for Salter-Harris Type III physeal fracture of the lower ulna end in an unspecified arm. Document the fracture type, location, and arm laterality (if known) to support coding accuracy. Include details on imaging, treatment, and follow-up to reflect the full clinical picture.