S52.223 Displaced transverse fracture of shaft of unspecified ulna

Name of the Condition

• Displaced transverse fracture of shaft of unspecified ulna

Summary

A displaced transverse fracture of the shaft of the unspecified ulna is a break across the long, central portion of the ulna bone (one of the two forearm bones) where the bone fragments are shifted out of alignment. The fracture runs horizontally through the bone shaft, and the displacement indicates the bone pieces are not in their normal anatomical position. The term "unspecified" denotes that the side (right or left) is not documented.

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 a 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 if the fracture is displaced.

Diagnosis

Physical examination to assess tenderness, swelling, and range of motion. Imaging tests, such as X-rays, to confirm the fracture and evaluate alignment. Additional imaging (e.g., CT scans) may be used for complex cases or to assess displacement.

Treatment Options

• Immobilization with a cast or splint to stabilize the fracture and promote healing.
• Closed reduction (manual realignment) if the bone fragments are significantly displaced.
• Surgical intervention (e.g., internal fixation with plates or screws) for unstable fractures or those with poor alignment.
• Pain management and physical therapy to restore function after healing.

Prognosis and Follow-Up

Prognosis depends on the severity of displacement, treatment, and patient factors (e.g., age, overall health). Most fractures heal within 6–12 weeks with proper immobilization. Follow-up imaging (e.g., X-rays) may be used to monitor healing. Physical therapy is often recommended to restore strength and range of motion.

Complications

• Nonunion (failure of the bone to heal) or malunion (healing in an abnormal position).
• Nerve or blood vessel damage near the fracture site.
• Stiffness or reduced mobility in the forearm, wrist, or hand.
• Infection (if surgical intervention is required).

Lifestyle & Prevention

• Use protective gear during high-risk activities (e.g., sports, construction).
• Maintain bone health through adequate calcium and vitamin D intake.
• Avoid falls by modifying home environments (e.g., removing tripping hazards).
• Engage in weight-bearing exercises to strengthen bones.

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. Prompt evaluation is critical to assess for fracture and prevent complications.

Tips for Medical Coders

Document the side (right/left) when known, as this affects code specificity. For "unspecified" cases, ensure clinical documentation supports the lack of side identification. Verify displacement status and fracture pattern to confirm the correct code assignment.