S49.142G Salter-Harris Type IV physeal fracture of lower end of humerus, left arm, subsequent encounter for fracture with delayed healing

Name of the Condition

• Salter-Harris Type IV physeal fracture of lower end of humerus, left arm, subsequent encounter for fracture with delayed healing (ICD-10 Code: S49.142G)

Summary

This code represents a Salter-Harris Type IV fracture involving the growth plate (physeal) at the lower end of the left humerus, with delayed healing during a subsequent encounter. This fracture type extends through the metaphysis, physis, and epiphysis, potentially disrupting bone growth and joint stability. It is most common in children and adolescents due to the relative weakness of the growth plate during development. The "subsequent encounter" modifier indicates ongoing care for a fracture that has not healed as expected within the typical timeframe.

Causes

Trauma is the primary cause, typically 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 cause a complex fracture involving multiple bone structures, which may contribute to delayed healing if not properly managed.

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
• Inadequate initial treatment or immobilization

Symptoms

• Persistent pain and swelling localized to the elbow or lower arm beyond the expected healing period
• Tenderness over the distal humeral growth plate
• Limited range of motion in the affected arm
• Possible visible deformity in severe cases
• Difficulty moving or bearing weight on the arm

Diagnosis

Diagnosis relies on a physical examination and imaging studies, such as X-rays or MRI, to assess the fracture site and healing progress. The provider will evaluate for signs of delayed union, nonunion, or malalignment. Clinical correlation with the patient's history of injury and treatment is essential to confirm the diagnosis and determine the appropriate management plan.

Treatment Options

Treatment focuses on promoting healing and may include immobilization with a cast or brace, activity modification, and close monitoring. Surgical intervention may be necessary if there is significant displacement, malalignment, or failure to heal with conservative measures. Physical therapy is often recommended to restore function and strength once healing is underway.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, the effectiveness of treatment, and the patient's adherence to follow-up care. Delayed healing may prolong recovery, but most fractures eventually heal with appropriate management. Regular follow-up appointments are necessary to assess healing progress and adjust treatment as needed. Long-term monitoring may be required to evaluate for potential growth disturbances or joint issues.

Complications

• Nonunion or delayed union of the fracture
• Growth plate damage leading to limb length discrepancy or angular deformity
• Joint stiffness or reduced range of motion
• Chronic pain
• Arthritis or other long-term joint problems

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider
• Use proper protective equipment during sports or activities
• Follow recommended immobilization and activity restrictions
• Engage in gradual, supervised physical therapy to restore function
• Maintain a healthy diet to support bone healing

When to Seek Professional Help

Seek medical attention if there is increased pain, swelling, or deformity, or if the arm cannot be used normally. Contact a healthcare provider if symptoms worsen or do not improve with treatment, or if there are signs of infection, such as redness, warmth, or fever.

Tips for Medical Coders

This code is specific to a subsequent encounter for a Salter-Harris Type IV physeal fracture of the left humerus with delayed healing. Coders should verify the laterality (left arm) and the presence of delayed healing to ensure accurate assignment. Documentation should clearly indicate the fracture type, location, laterality, and the reason for the subsequent encounter (delayed healing). The "subsequent encounter" modifier (G) is appropriate when the patient is receiving active treatment for the fracture during the healing phase.