S59.039A Salter-Harris Type III physeal fracture of lower end of ulna, unspecified arm, initial encounter for closed fracture

Name of the Condition

• Salter-Harris Type III physeal fracture of lower end of ulna, unspecified arm, initial encounter for closed fracture

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 is classified as an initial encounter for a closed fracture, meaning the skin is intact and this is the first treatment episode. Trauma to the forearm, particularly near the wrist joint, is a common cause.

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 diagnosis must specify the fracture as Salter-Harris Type III and note the location at the lower end of the ulna.

Treatment Options

Treatment depends on fracture severity and displacement. Nonsurgical options include casting or splinting for stable fractures. Surgical intervention may be needed for displaced fractures to realign the joint surface. Follow-up imaging ensures proper healing.

Prognosis and Follow-Up

Prognosis is generally good with appropriate treatment, though growth plate injuries carry a risk of long-term complications like growth disturbances. Regular follow-up appointments monitor healing and functional recovery, especially in children.

Complications

Potential complications include growth plate damage leading to limb length discrepancies or angular deformities, joint stiffness, or arthritis. Infection risk is low for closed fractures but may increase with surgical intervention.

Lifestyle & Prevention

Preventive measures include using protective gear during sports, ensuring safe play environments, and teaching proper falling techniques. Early recognition and treatment of injuries reduce complication risks.

When to Seek Professional Help

Seek immediate medical attention for severe pain, inability to move the wrist or hand, visible deformity, or signs of infection (e.g., fever, increased swelling). Prompt evaluation is critical to prevent long-term issues.

Tips for Medical Coders

Use this code for an initial encounter of a closed Salter-Harris Type III physeal fracture at the lower end of the ulna in an unspecified arm. Document the fracture type, location, and encounter status clearly. Ensure the code aligns with clinical findings and treatment episode details.