S52.362K Displaced segmental fracture of shaft of radius, left arm, subsequent encounter for closed fracture with nonunion

Name of the Condition

Displaced segmental fracture of shaft of radius, left arm, subsequent encounter for closed fracture with nonunion
ICD-10 Code: S52.362K

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 closed, meaning the bone does not penetrate the skin. 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, and stability of the bone fragments.

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, infection, or excessive movement at the fracture site.

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 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, though this code specifies closed)
• Delayed or absent healing signs, such as reduced pain or improved mobility

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and deformity. Imaging studies, such as X-rays, are used to confirm the fracture type, displacement, and nonunion. Additional tests, like CT scans or bone scans, may be ordered to evaluate bone healing and blood supply. The clinician will also review the patient’s medical history and prior treatment to determine the cause of nonunion.

Treatment Options

Treatment depends on the severity of nonunion and displacement. Options may include:

• Surgical intervention, such as bone grafting, internal fixation with plates or screws, or external fixation to stabilize the fracture.
• Non-surgical approaches, including prolonged immobilization with a cast or brace, or electrical stimulation to promote healing.
• Pain management with medications or physical therapy to restore function and strength.

Prognosis and Follow-Up

Prognosis varies based on the fracture’s severity, patient health, and treatment response. Nonunion may require extended recovery, and some patients may experience long-term functional limitations. Regular follow-up visits are necessary to monitor healing, adjust treatment, and address complications. Physical therapy is often recommended to improve mobility and strength.

Complications

• Chronic pain or discomfort
• Limited range of motion in the wrist or forearm
• Infection (rare, but possible in surgical cases)
• Nerve or blood vessel damage
• Need for additional surgeries if healing does not progress

Lifestyle & Prevention

• Avoid high-risk activities or use protective gear during sports.
• Maintain bone health with a balanced diet rich in calcium and vitamin D.
• Quit smoking to improve bone healing.
• Follow post-injury care instructions, including immobilization and physical therapy, to reduce nonunion risk.

When to Seek Professional Help

Seek medical attention if:

• Pain worsens or does not improve with treatment.
• Swelling, bruising, or deformity increases.
• There is new numbness, tingling, or weakness in the hand or fingers.
• The fracture site shows signs of infection, such as redness, warmth, or drainage.

Tips for Medical Coders

Use this code for a subsequent encounter (not initial) for a closed, displaced segmental fracture of the left radius shaft with documented nonunion. Ensure documentation confirms the fracture type, laterality, encounter type, and nonunion status. Verify that the fracture is closed (no skin penetration) and that the encounter is for follow-up care, not initial treatment.