S52.363K Displaced segmental fracture of shaft of radius, unspecified arm, subsequent encounter for closed fracture with nonunion

Name of the Condition

Displaced segmental fracture of shaft of radius, unspecified arm, subsequent encounter for closed fracture with nonunion
ICD-10 Code: S52.363K

Summary

A displaced segmental fracture of the shaft of the radius is a break in the long, outer bone of the forearm (radius) between the elbow and wrist, where the bone is separated into two or more fragments that are misaligned. This injury typically results from significant trauma and may impair arm function depending on the degree of displacement and associated soft tissue damage. The "unspecified arm" designation indicates the affected side is not documented. The "subsequent encounter for closed fracture with nonunion" specifies this is a follow-up visit for a fracture that has not healed properly, with no open wound present.

Causes

This fracture commonly occurs due to direct trauma, such as falls onto an outstretched arm, high-impact blows to the forearm, or accidents involving twisting forces at the wrist or elbow. Motor vehicle collisions, sports injuries, or forceful impacts may also cause the bone to break into multiple segments. Nonunion may develop if the fracture fails to heal due to inadequate immobilization, poor blood supply, infection, or other complicating factors.

Risk Factors

• Participation in contact sports or activities with a high risk of falls
• Osteoporosis or weakened bone density
• Advanced age, which increases fracture susceptibility
• Previous forearm or wrist injuries
• Occupations or hobbies involving repetitive stress or heavy lifting
• Smoking, which impairs bone healing
• Certain medical conditions affecting bone metabolism

Symptoms

• Persistent pain at the fracture site, often worsening with movement
• Swelling or bruising that does not resolve over time
• Limited range of motion in the wrist or forearm
• Visible deformity or abnormal mobility of the bone
• Sensation of the bone shifting or "giving way"

Diagnosis

Diagnosis typically involves a physical examination to assess pain, swelling, and deformity, followed by imaging studies such as X-rays, CT scans, or MRIs to confirm the fracture type, displacement, and nonunion status. The provider will evaluate the fracture site for signs of healing, check for associated injuries, and determine the extent of functional impairment. Documentation of the fracture's chronicity and nonunion is critical for accurate coding.

Treatment Options

Treatment may include immobilization with a cast or brace to stabilize the fracture, surgical intervention (e.g., internal fixation with plates or screws) to realign and secure the bone, or bone grafting to promote healing. Physical therapy is often recommended to restore strength and mobility. Pain management and monitoring for complications are also part of the care plan.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, the success of treatment, and the patient's overall health. Nonunion fractures may require additional interventions, and recovery can take several months. Regular follow-up appointments are necessary to assess healing progress, adjust treatment, and address any functional limitations. Long-term monitoring may be needed to ensure the fracture site stabilizes.

Complications

• Chronic pain or discomfort
• Persistent nonunion or delayed healing
• Arthritis or joint stiffness in the wrist or elbow
• Nerve or blood vessel damage
• Infection (if surgical intervention is required)
• Reduced grip strength or functional impairment

Lifestyle & Prevention

• Avoid high-risk activities or use protective gear during sports
• Maintain bone health through a balanced diet rich in calcium and vitamin D
• Engage in weight-bearing exercises to strengthen bones
• Quit smoking to improve bone healing
• Use proper techniques for lifting or repetitive motions to reduce stress on the forearm

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, deformity, or inability to move the arm after an injury. Contact your healthcare provider if pain persists, worsens, or if you notice signs of nonunion (e.g., persistent swelling, abnormal mobility). Follow up as directed for scheduled appointments to monitor healing.

Tips for Medical Coders

Document the fracture's status (displaced segmental), location (shaft of radius, unspecified arm), encounter type (subsequent), and complication (nonunion) to support accurate coding. Ensure clinical documentation specifies the fracture is closed (no open wound) and that nonunion is present. Verify the timing of the encounter (subsequent) and the absence of open wound characteristics to align with the code's requirements.