S79.119D Salter-Harris Type I physeal fracture of lower end of unspecified femur, subsequent encounter for fracture with routine healing

Name of the Condition

Salter-Harris Type I physeal fracture of lower end of unspecified femur, subsequent encounter for fracture with routine healing

Summary

A Salter-Harris Type I physeal fracture of the lower end of the unspecified femur is a growth plate injury at the distal femur, typically seen in children or adolescents. This fracture involves separation of the physis (growth plate) from the metaphysis without associated fracture of the epiphysis or metaphysis. The "subsequent encounter" modifier indicates this is a follow-up visit during the healing phase, with routine healing noted.

Causes

Salter-Harris Type I physeal fractures of the lower femur are usually caused by acute trauma, such as falls, sports-related injuries, or direct blows to the knee or thigh. The force transmitted across the growth plate can cause it to separate from the adjacent bone. In some cases, repetitive stress or overuse may contribute to the injury, particularly in active children or adolescents.

Risk Factors

• Age: Most common in children and adolescents, as growth plates are weaker than surrounding bone.
• Activity level: Participation in high-impact sports or activities with a risk of falls (e.g., gymnastics, soccer, skateboarding).
• Growth spurts: Periods of rapid growth may temporarily weaken the physis, increasing susceptibility to injury.
• Anatomical factors: Variations in bone structure or prior injuries may predispose to this type of fracture.

Symptoms

• Pain and swelling localized to the knee or thigh
• Difficulty bearing weight or walking
• Limited range of motion in the affected limb
• Visible deformity in severe cases
• Tenderness over the growth plate area

Diagnosis

Diagnosis is typically made through clinical evaluation and imaging. Physical examination may reveal tenderness, swelling, or deformity. Imaging studies, such as X-rays, are used to confirm the fracture type and assess displacement. The "subsequent encounter" modifier indicates the fracture is in the healing phase, with routine healing documented.

Treatment Options

Treatment depends on the severity and displacement of the fracture. Non-displaced fractures may be managed with immobilization (e.g., casting or splinting) and activity modification. Displaced fractures may require closed or open reduction. Follow-up care includes monitoring for healing and assessing for complications.

Prognosis and Follow-Up

Prognosis is generally good with appropriate treatment, especially for non-displaced fractures. Routine healing is expected with proper immobilization and activity restriction. Follow-up visits are necessary to monitor healing progress, assess for complications, and guide rehabilitation. Long-term follow-up may be needed to evaluate growth and alignment.

Complications

• Growth disturbance or limb length discrepancy
• Premature closure of the growth plate
• Malunion or nonunion
• Chronic pain or stiffness
• Recurrent fractures

Lifestyle & Prevention

• Use protective gear during high-risk activities (e.g., helmets, pads)
• Ensure proper warm-up and technique in sports
• Maintain bone health with adequate nutrition (calcium, vitamin D)
• Avoid overuse or repetitive stress on growing bones
• Supervise children during activities with fall risks

When to Seek Professional Help

Seek medical attention if there is severe pain, inability to bear weight, visible deformity, or signs of infection (e.g., fever, redness, swelling). Follow-up is necessary if symptoms worsen or do not improve with initial treatment.

Tips for Medical Coders

Document the fracture type (Salter-Harris Type I), location (lower end of femur, unspecified), and encounter status (subsequent with routine healing). Include details on imaging findings, treatment provided, and follow-up plans to support code assignment. Ensure documentation reflects the healing phase and absence of complications.