S52.321K Displaced transverse fracture of shaft of right radius, subsequent encounter for closed fracture with nonunion

Name of the Condition

Displaced transverse fracture of shaft of right radius, subsequent encounter for closed fracture with nonunion

Summary

A displaced transverse fracture of the shaft of the right radius is a horizontal break in the long outer bone of the forearm (radius) where the broken fragments are misaligned. This code represents a subsequent encounter for a closed fracture that has failed to heal (nonunion) after an initial injury. The condition typically results from trauma and may affect arm function depending on the degree of displacement and the extent of nonunion.

Causes

This fracture commonly occurs due to 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 can also cause the bone to break. Nonunion may develop if the fracture does not heal properly, often due to inadequate immobilization, poor blood supply, or infection.

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

Symptoms

• Persistent pain at the fracture site, often worsening with activity
• Swelling, bruising, or deformity of the forearm
• Inability to move the wrist or forearm fully
• Visible bone displacement (if severe)
• Numbness or tingling in the hand or fingers (if nerve involvement occurs)
• Delayed healing or lack of improvement over time

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and deformity, followed by imaging studies such as X-rays, CT scans, or MRIs to evaluate fracture alignment and healing progress. The provider will also assess for signs of nonunion, such as persistent fracture lines or lack of callus formation. Additional tests may be ordered to rule out infection or assess bone density.

Treatment Options

Treatment depends on the severity of displacement and nonunion. Options may include immobilization with a cast or brace, surgical intervention (e.g., internal fixation with plates or screws), bone grafting to promote healing, or physical therapy to restore function. Pain management and activity modification are also part of the care plan.

Prognosis and Follow-Up

Prognosis varies based on the extent of nonunion and treatment response. With proper intervention, many patients achieve healing and functional recovery, though some may experience long-term stiffness or weakness. Regular follow-up appointments are necessary to monitor healing and adjust treatment as needed.

Complications

• Chronic pain or discomfort
• Limited range of motion in the wrist or forearm
• Nerve or blood vessel damage
• Infection (if surgical intervention is required)
• Malunion (improper healing)
• Need for additional surgeries

Lifestyle & Prevention

• Avoid high-risk activities that may lead to falls or trauma
• Maintain bone health through a balanced diet rich in calcium and vitamin D
• Engage in regular weight-bearing exercise to strengthen bones
• Use protective gear during sports or activities with a fall risk
• Quit smoking, as it impairs bone healing

When to Seek Professional Help

Seek medical attention if you experience persistent pain, swelling, or deformity after a forearm injury, or if symptoms worsen over time. Immediate care is needed for severe pain, inability to move the arm, or signs of infection (e.g., fever, redness, drainage).

Tips for Medical Coders

This code (S52.321K) is used for a subsequent encounter of a closed, displaced transverse fracture of the right radius shaft with nonunion. Documentation should specify the fracture type, laterality (right), encounter type (subsequent), and the presence of nonunion. Ensure the record includes details on treatment provided and the reason for the subsequent visit (e.g., monitoring nonunion or planning further intervention).