S52.223A Displaced transverse fracture of shaft of unspecified ulna, initial encounter for closed fracture

Name of the Condition

• Displaced transverse fracture of shaft of unspecified ulna, initial encounter for closed fracture

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. This is an initial encounter for a closed fracture, meaning the skin is intact and the fracture has not been treated previously.

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.
• Pain management with medications or other interventions.
• Closed reduction (manual realignment) if necessary to correct displacement.
• Surgical intervention (e.g., internal fixation) for severe displacement or unstable fractures.
• Physical therapy to restore strength and mobility after healing.

Prognosis and Follow-Up

Prognosis depends on fracture severity, alignment, and treatment adherence. Most fractures heal within 6–12 weeks with proper immobilization. Follow-up appointments monitor healing progress, alignment, and functional recovery. Physical therapy may be recommended to restore full range of motion and strength.

Complications

• Nonunion (failure to heal) or malunion (improper healing) of the fracture.
• Nerve or blood vessel damage near the fracture site.
• Chronic pain or stiffness in the forearm.
• Infection (rare, but possible with surgical intervention).

Lifestyle & Prevention

• Use protective gear during high-risk activities (e.g., sports, work).
• Maintain bone health through adequate calcium and vitamin D intake.
• Avoid falls by using assistive devices if balance is impaired.
• Engage in regular weight-bearing exercise to strengthen bones.

When to Seek Professional Help

Seek immediate medical attention for severe pain, visible deformity, inability to move the arm, or signs of infection (e.g., redness, fever). Follow up with a healthcare provider if pain worsens, swelling persists, or mobility does not improve.

Tips for Medical Coders

Document the fracture as displaced and transverse, specify the ulna shaft, and note it is an initial encounter for a closed fracture. Ensure the "unspecified" designation for the ulna is appropriate when side (right/left) is not documented. Include details on alignment, treatment, and encounter type to support code accuracy.