S49.129S Salter-Harris Type II physeal fracture of lower end of humerus, unspecified arm, sequela

Name of the Condition

• Salter-Harris Type II physeal fracture of lower end of humerus, unspecified arm, sequela (ICD-10 Code: S49.129S)

Summary

This code describes a Salter-Harris Type II fracture involving the growth plate (physeal) at the lower end of the humerus, with a fragment of the metaphysis (adjacent bone) included. The "sequela" designation indicates this is a residual condition resulting from the fracture, such as chronic pain, deformity, or functional impairment. This type of injury is common in children and adolescents due to the relative weakness of the growth plate compared to surrounding bone, typically affecting the distal humeral physis where the upper arm 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

• Chronic pain or discomfort in the elbow or lower arm
• Reduced range of motion or stiffness
• Visible deformity or malalignment of the arm
• Functional limitations, such as difficulty with daily activities

Diagnosis

Diagnosis is based on clinical evaluation and imaging studies, such as X-rays or MRI, to assess the residual effects of the fracture. The provider will review the patient's history of the original injury and current symptoms. Imaging helps identify any persistent bone abnormalities, joint instability, or growth disturbances that may contribute to the sequela.

Treatment Options

Treatment focuses on managing symptoms and improving function. Options may include physical therapy to restore mobility and strength, pain management with medications or injections, and orthopedic interventions if deformity or instability is present. Surgical correction may be considered for severe cases.

Prognosis and Follow-Up

Prognosis depends on the severity of the residual damage and the effectiveness of treatment. Most patients experience improvement with appropriate care, though some may have long-term limitations. Regular follow-up with an orthopedic specialist is recommended to monitor healing and address any ongoing issues.

Complications

• Chronic pain or arthritis in the elbow joint
• Growth disturbances or limb length discrepancy
• Persistent deformity or functional impairment
• Reduced range of motion or stiffness

Lifestyle & Prevention

• Avoid high-impact activities that stress the elbow until cleared by a provider
• Use protective equipment during sports or activities
• Engage in regular, low-impact exercise to maintain joint health
• Follow rehabilitation guidelines to optimize recovery

When to Seek Professional Help

Seek medical attention if symptoms worsen, new pain or deformity develops, or functional limitations interfere with daily activities. Prompt evaluation is important to address complications and adjust treatment as needed.

Tips for Medical Coders

This code is used for sequela (residual) conditions following a Salter-Harris Type II physeal fracture of the lower humerus. Documentation should clearly indicate the residual effects, such as chronic pain, deformity, or functional impairment, and link them to the original fracture. Ensure the encounter is for the sequela, not the acute injury, and that the arm side is unspecified as documented.