S49.122S Salter-Harris Type II physeal fracture of lower end of humerus, left arm, sequela

Name of the Condition

• Salter-Harris Type II physeal fracture of lower end of humerus, left arm, sequela (ICD-10 Code: S49.122S)

Summary

This code describes a Salter-Harris Type II fracture involving the growth plate (physeal) at the lower end of the left humerus, with the fracture extending into the metaphysis. It is a sequela, indicating the condition represents the residual effect of the fracture after the acute phase has resolved. These fractures are common in children and adolescents due to the relative weakness of the growth plate compared to surrounding bone. The injury typically affects the distal humeral physis, where the upper arm bone meets the elbow joint.

Causes

Trauma is the primary cause, often resulting from a fall onto an outstretched hand or a direct blow to the elbow. Sports-related injuries, such as those from contact sports or activities involving forceful arm movement, are frequent mechanisms. The force applied to the elbow can disrupt the growth plate and pull a small piece of the metaphysis with it.

Risk Factors

• Age (most common in children and adolescents with open growth plates)
• Participation in high-impact or contact sports
• Prior growth plate injuries or developmental abnormalities
• Activities involving repetitive stress on the elbow

Symptoms

• Persistent pain or discomfort in the elbow or lower arm
• Limited range of motion in the affected arm
• Possible deformity or malalignment of the elbow joint
• Swelling or tenderness over the distal humeral growth plate area

Diagnosis

Diagnosis is based on clinical evaluation and imaging studies. A physical examination may reveal tenderness, swelling, or deformity. X-rays or other imaging modalities are used to confirm the fracture type and assess for residual effects. The sequela designation indicates the fracture has healed but left lasting functional or structural changes.

Treatment Options

Treatment focuses on managing residual symptoms and preventing further complications. This may include physical therapy to improve range of motion and strength, pain management, and monitoring for long-term issues like growth disturbances or joint instability. Surgical intervention is rarely needed for sequela but may be considered for severe deformities.

Prognosis and Follow-Up

Prognosis depends on the severity of the initial injury and any resulting complications. Most patients recover with minimal long-term effects, but some may experience persistent pain, limited mobility, or growth abnormalities. Regular follow-up with a healthcare provider is important to monitor for complications and adjust treatment as needed.

Complications

• Growth plate disturbances leading to limb length discrepancies
• Joint stiffness or reduced range of motion
• Chronic pain or discomfort
• Potential for early-onset arthritis in the affected joint

Lifestyle & Prevention

• Avoid high-impact activities that strain the elbow joint
• Use proper protective equipment during sports
• Engage in regular, low-impact exercises to maintain joint flexibility
• Follow post-injury rehabilitation guidelines to optimize recovery

When to Seek Professional Help

Seek medical attention if you experience worsening pain, new swelling, or decreased mobility in the affected arm. Consult a healthcare provider if you notice signs of infection, such as redness, warmth, or fever, or if symptoms do not improve with conservative management.

Tips for Medical Coders

This code is used for the sequela of a Salter-Harris Type II physeal fracture of the left humerus. Document the residual effects of the fracture, including any functional limitations or structural changes. Ensure the sequela is clearly linked to the initial injury and that the fracture has fully healed. Code S49.122S is appropriate when the condition represents the long-term outcome of the fracture, not the acute phase.