S52.362M Displaced segmental fracture of shaft of radius, left arm, subsequent encounter for open fracture type I or II with nonunion

Name of the Condition

Displaced segmental fracture of shaft of radius, left arm, subsequent encounter for open fracture type I or II with nonunion
ICD-10 Code: S52.362M

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 is classified as an open fracture type I or II, meaning the bone has pierced the skin with minimal or moderate soft tissue damage. The term "subsequent encounter" indicates this is a follow-up visit for the fracture, and "nonunion" specifies that the bone has failed to heal properly after an expected period. Treatment and recovery depend on the degree of displacement, fracture pattern, stability of fragments, and the presence of nonunion.

Causes

This fracture typically results from direct trauma, such as falls onto an outstretched arm, direct blows to the forearm, or accidents involving twisting forces at the wrist or elbow. High-impact events like motor vehicle collisions or sports injuries may also cause this type of fracture. The segmental nature of the break suggests significant force was applied to the bone. Nonunion may occur due to inadequate immobilization, poor blood supply to the fracture site, infection, or excessive movement during healing.

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 or poor nutrition, which can impair bone healing
• Certain medical conditions (e.g., diabetes, vascular disease) that affect healing

Symptoms

• Persistent pain at the injury site, often worsening with movement
• Swelling, bruising, or deformity of the forearm
• Inability to move the wrist or forearm fully
• Visible bone protrusion through the skin (in open fractures)
• Delayed or absent healing signs (e.g., no callus formation on X-rays)
• Possible infection signs (e.g., redness, drainage, fever) in open fractures

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and deformity, followed by imaging studies. X-rays are typically used to confirm the fracture type, displacement, and nonunion. CT scans may provide detailed views of the fracture site and bone healing. The classification as an open fracture type I or II is determined by the size of the skin wound and soft tissue damage. Blood tests may be ordered to check for infection or nutritional deficiencies affecting healing.

Treatment Options

Treatment focuses on promoting bone union and restoring function. Options include:

• Immobilization with a cast or brace to stabilize the fracture
• Surgical intervention (e.g., internal fixation with plates, screws, or bone grafting) to realign fragments and stimulate healing
• Antibiotics for open fractures to prevent infection
• Physical therapy to restore strength and mobility once healing progresses
• Pain management with medications or other modalities

The choice of treatment depends on the severity of nonunion, patient health, and fracture characteristics.

Prognosis and Follow-Up

Prognosis varies based on the success of treatment and the patient’s overall health. Nonunion fractures may require additional interventions, and recovery can take several months to a year. Regular follow-up with imaging (e.g., X-rays) is essential to monitor healing. Physical therapy is often needed to regain full function. Long-term outcomes depend on the ability to achieve bone union and restore forearm mobility.

Complications

• Persistent nonunion or delayed healing
• Infection (especially in open fractures)
• Nerve or blood vessel damage
• Chronic pain or stiffness
• Malunion (improper healing leading to deformity)
• Reduced grip strength or forearm function

Lifestyle & Prevention

• Avoid high-risk activities or use protective gear (e.g., wrist guards) during sports
• Maintain bone health with a balanced diet rich in calcium and vitamin D
• Engage in weight-bearing exercises to strengthen bones
• Quit smoking, as it impairs healing
• Use proper techniques for lifting or repetitive tasks to reduce stress on the forearm

When to Seek Professional Help

Seek immediate medical attention if:

• There is severe pain, swelling, or deformity after an injury
• The skin is broken over the fracture site
• There are signs of infection (e.g., redness, drainage, fever)
• The fracture does not improve with initial treatment or shows no healing progress
• There is numbness, tingling, or loss of circulation in the hand or fingers

Tips for Medical Coders

Document the fracture type (open I or II), laterality (left arm), and the presence of nonunion clearly. Specify "subsequent encounter" to indicate follow-up care. Ensure documentation supports the nonunion diagnosis, as this affects coding and may require additional details about healing status. Verify that all components of the code (displaced segmental fracture, shaft of radius, left arm, open fracture type I or II, nonunion, subsequent encounter) are accurately reflected in the medical record.