S49.042S Salter-Harris Type IV physeal fracture of upper end of humerus, left arm, sequela

Name of the Condition

• Salter-Harris Type IV physeal fracture of upper end of humerus, left arm, sequela (ICD-10 Code: S49.042S)

Summary

This code describes a Salter-Harris Type IV physeal fracture of the upper end of the left humerus, representing a sequela (late effect) of the injury. This fracture type extends through the metaphysis, physis, and epiphysis, often involving joint structures. It typically occurs in children and adolescents due to the relative weakness of the growth plate during development, and the sequela designation indicates residual effects following the acute phase.

Causes

The initial fracture is caused by trauma, such as a fall onto an outstretched hand or a direct blow to the shoulder. These injuries may occur during sports, play, or accidents involving forceful arm movement. The sequela arises as a result of the body’s healing response to the original injury.

Risk Factors

• Age (most common in children and adolescents with open growth plates)
• Participation in high-impact sports or activities
• Prior growth plate injuries

Symptoms

• Chronic pain or discomfort at the shoulder or upper arm
• Limited range of motion
• Visible deformity in severe cases
• Difficulty moving the arm
• Possible joint instability

Diagnosis

Diagnosis relies on a physical examination to assess pain, swelling, and range of motion, combined with imaging studies like X-rays to visualize residual effects of the fracture. A detailed patient history, including the mechanism of the original injury and timeline of symptoms, is also important to confirm the sequela status.

Treatment Options

Treatment focuses on managing residual symptoms and may include physical therapy to improve range of motion and strength, pain management, and monitoring for long-term complications. In some cases, surgical intervention may be considered to address deformity or joint instability.

Prognosis and Follow-Up

Prognosis depends on the severity of the original injury and the effectiveness of initial treatment. Regular follow-up is important to monitor for complications such as growth disturbances or arthritis. Long-term outcomes may vary, with some patients experiencing persistent symptoms.

Complications

• Growth plate disturbances leading to limb length discrepancy
• Joint stiffness or arthritis
• Chronic pain
• Deformity of the humerus or shoulder

Lifestyle & Prevention

• Avoid high-impact activities that risk re-injury
• Engage in low-impact exercises to maintain strength and mobility
• Use protective gear during sports or activities
• Follow rehabilitation guidelines to optimize recovery

When to Seek Professional Help

Seek medical attention if you experience worsening pain, new deformity, or difficulty moving the arm, as these may indicate a complication or new injury.

Tips for Medical Coders

This code is used for the sequela of a Salter-Harris Type IV physeal fracture of the upper end of the left humerus. Documentation should clearly indicate the residual effects of the original injury, including any chronic symptoms or complications. Ensure the code is assigned only when the sequela is the focus of the encounter, and follow ICD-10-CM guidelines for sequela coding.