S52.231Q Displaced oblique fracture of shaft of right ulna, subsequent encounter for open fracture type I or II with malunion

Name of the Condition

• Displaced Oblique Fracture of Shaft of Right Ulna, Subsequent Encounter for Open Fracture Type I or II with Malunion
• ICD Code: S52.231Q
• Also referred to as: Right Ulna Shaft Fracture (Malunion, Open)

Summary

A displaced oblique fracture of the shaft of the right ulna is a break in the long, straight portion of the ulna bone where the fracture line is angled and the bone fragments are misaligned. This code applies to a subsequent encounter for an open fracture (skin broken) classified as type I or II (minimal soft tissue damage) that has healed with malunion, meaning the bone fragments did not align properly during healing.

Causes

Direct trauma to the forearm, such as from a fall, blow, or accident. High-impact injuries, including sports-related incidents or motor vehicle collisions. Indirect forces transmitted through the wrist or elbow, potentially causing an angled break in the ulna shaft.

Risk Factors

• Participation in contact sports or activities with a high risk of falls.
• Osteoporosis or other conditions that weaken bone density.
• Previous fractures or bone abnormalities that may predispose to injury.
• Advanced age, which can reduce bone strength.

Symptoms

• Pain and tenderness localized to the forearm.
• Swelling and bruising around the injured area.
• Difficulty moving the arm, wrist, or hand due to pain or instability.
• Possible visible deformity at the fracture site.
• Limited range of motion or functional impairment from malunion.

Diagnosis

Physical examination to assess swelling, bruising, and range of motion. Imaging tests, such as X-rays, to visualize the fracture alignment and confirm malunion. Review of prior treatment and healing history to determine the fracture type and encounter stage.

Treatment Options

• Orthopedic evaluation to assess malunion severity and functional impact.
• Possible surgical intervention, such as osteotomy or hardware removal, to correct alignment.
• Physical therapy to improve strength and range of motion.
• Pain management with medications or other modalities.
• Monitoring for complications related to the open fracture or malunion.

Prognosis and Follow-Up

Prognosis depends on the degree of malunion and functional impairment. Follow-up care may include regular imaging to assess healing and rehabilitation progress. Long-term monitoring for arthritis or other complications may be necessary.

Complications

• Chronic pain or discomfort from malalignment.
• Reduced range of motion or functional limitations.
• Increased risk of future fractures due to weakened bone structure.
• Potential for arthritis in the affected joint over time.

Lifestyle & Prevention

• Avoid high-impact activities that risk re-injury until cleared by a healthcare provider.
• Engage in prescribed physical therapy to restore function.
• Use protective equipment during sports or activities to prevent falls.
• Maintain bone health through proper nutrition and exercise, as advised.

When to Seek Professional Help

Seek immediate medical attention if pain worsens, swelling increases, or new deformity occurs. Contact a healthcare provider if you experience persistent difficulty moving the arm, wrist, or hand, or if signs of infection (e.g., redness, warmth, fever) develop at the fracture site.

Tips for Medical Coders

Document the fracture type (open, type I or II), the presence of malunion, and the subsequent encounter status. Ensure clinical notes specify the fracture's alignment, healing status, and any functional impact to support coding accuracy.