S52.264 Nondisplaced segmental fracture of shaft of ulna, right arm

Name of the Condition

• Nondisplaced segmental fracture of shaft of ulna, right arm

Summary

A nondisplaced segmental fracture of the shaft of the ulna, right arm, is a break in the long, straight portion of the ulna bone (one of the two forearm bones) where the bone is broken into two or more separate fragments, but these fragments remain in their normal anatomical alignment. This type of fracture involves the main body of the ulna and typically results from trauma, with the bone splitting into distinct segments without displacement.

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 (though less likely with nondisplaced fractures).

Diagnosis

Physical examination to assess tenderness, swelling, and range of motion. Imaging tests, such as X-rays, to confirm the fracture and evaluate alignment of bone fragments. Additional imaging (e.g., CT scans) may be used for detailed assessment if needed.

Treatment Options

• Immobilization with a cast or splint to stabilize the fracture and promote healing.
• Pain management with medications or other therapies.
• Surgical intervention may be required if the fracture is unstable or fails to heal with conservative treatment.
• Physical therapy to restore strength and mobility after healing.

Prognosis and Follow-Up

Most nondisplaced segmental fractures of the ulna shaft heal well with proper immobilization and follow-up care. Healing typically occurs over 6–8 weeks, but recovery time may vary. Regular follow-up appointments with imaging to monitor healing progress are important. Return to normal activities is gradual, guided by pain and functional recovery.

Complications

• Delayed healing or nonunion of the fracture.
• Malunion (abnormal healing) if alignment is not maintained.
• Nerve or blood vessel injury near the fracture site.
• Stiffness or reduced range of motion in the arm or wrist.

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.
• Strengthen forearm muscles to improve stability and reduce injury risk.

When to Seek Professional Help

Seek immediate medical attention if there is severe pain, visible deformity, inability to move the arm, or signs of nerve or vascular compromise (e.g., numbness, coldness). Follow up with a healthcare provider if pain worsens, swelling persists, or mobility does not improve with treatment.

Tips for Medical Coders

Document the fracture as nondisplaced and segmental, specifying the right arm and shaft of the ulna. Include details on trauma mechanism, imaging findings, and treatment approach to support code assignment. Ensure alignment with clinical documentation and ICD-10-CM guidelines for accuracy.