S52.522K Torus fracture of lower end of left radius, subsequent encounter for fracture with nonunion

Name of the Condition

• Torus fracture of lower end of left radius, subsequent encounter for fracture with nonunion

Summary

A torus fracture of the lower end of the left radius is an incomplete fracture involving the distal portion of the radius bone, near the wrist. This injury typically presents as a buckling or compression of the bone cortex without complete displacement, often occurring in children due to their more flexible bone structure. The fracture is classified as a subsequent encounter for fracture with nonunion, indicating that the bone has failed to heal properly after an initial injury. This may result in persistent pain, instability, or functional limitations.

Causes

Usually results from trauma such as a fall onto an outstretched hand, direct impact to the wrist, or a forceful bending injury. The mechanism involves axial loading or a sudden twist applied to the wrist, causing the bone to buckle rather than break completely. Nonunion may develop due to inadequate immobilization, poor blood supply, or excessive movement during healing.

Risk Factors

• Higher incidence in children and adolescents due to developing bone structure.
• Activities with a risk of falls, such as sports or play.
• Lack of protective gear during high-impact activities.
• Factors contributing to nonunion, including smoking, diabetes, or nutritional deficiencies.

Symptoms

• Persistent localized pain and swelling at the wrist.
• Tenderness to touch the affected area.
• Limited wrist movement or instability.
• Possible visible deformity in severe cases.
• Symptoms that do not improve with initial treatment.

Diagnosis

Physical examination to assess pain, swelling, and range of motion. Imaging tests, primarily X-rays, to confirm the fracture type and evaluate for nonunion. Additional imaging, such as CT scans, may be used to assess bone healing and alignment. The diagnosis is confirmed by evidence of incomplete fracture with failure of the bone to unite over time.

Treatment Options

• Immobilization with a cast or splint to support healing and limit movement.
• Surgical intervention, such as internal fixation, to stabilize the fracture and promote union.
• Bone grafting to stimulate healing in cases of nonunion.
• Physical therapy to restore function and strength after healing.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and the effectiveness of treatment. Most patients experience improved function with appropriate intervention, but recovery may be prolonged. Regular follow-up with imaging is necessary to monitor healing progress. Long-term outcomes may include residual stiffness or mild functional limitations.

Complications

• Persistent pain or instability.
• Delayed union or nonunion requiring further intervention.
• Arthritis or joint damage due to improper healing.
• Nerve or vascular injury in severe cases.

Lifestyle & Prevention

• Use protective gear during high-impact activities to reduce fracture risk.
• Maintain a healthy diet and avoid smoking to support bone healing.
• Follow post-injury care instructions to minimize nonunion risk.
• Engage in gradual rehabilitation to restore strength and mobility.

When to Seek Professional Help

Seek medical attention if symptoms worsen, pain persists, or there is new swelling or deformity. Immediate care is needed for severe pain, inability to move the wrist, or signs of infection.

Tips for Medical Coders

Document the subsequent encounter for fracture with nonunion, specifying the left radius and torus fracture type. Include details on treatment provided, imaging results, and clinical findings to support the diagnosis. Ensure documentation aligns with the ICD-10-CM code S52.522K, emphasizing the nonunion status and subsequent encounter context.