S52.225B Nondisplaced transverse fracture of shaft of left ulna, initial encounter for open fracture type I or II

Name of the Condition

• Nondisplaced transverse fracture of shaft of left ulna, initial encounter for open fracture type I or II

Summary

A nondisplaced transverse fracture of the shaft of the left ulna is a straight-line break across the long, central portion of the ulna bone (one of the two forearm bones) where the bone fragments remain in their normal anatomical alignment. The fracture is classified as open (type I or II), meaning the skin is breached, but the wound is typically small and clean. This is the initial encounter for the fracture, indicating the first time the patient is being treated for this specific injury.

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 nondisplaced fractures may not show obvious deformity).
• Open wound (type I or II) at the fracture site, which may be small and clean.

Diagnosis

Physical examination to assess tenderness, swelling, and range of motion. Imaging tests, such as X-rays, to confirm the fracture and evaluate alignment. Assessment of the open wound to determine the type (I or II) and ensure no significant contamination or tissue damage. Additional imaging (e.g., CT scans) may be used for complex cases.

Treatment Options

• Wound care to clean and dress the open fracture site.
• Immobilization with a cast or splint to stabilize the fracture and promote healing.
• Pain management with medications as needed.
• Antibiotics may be prescribed to prevent infection, especially for open fractures.
• Follow-up imaging to monitor healing progress.

Prognosis and Follow-Up

Most nondisplaced fractures heal well with proper immobilization and care. Follow-up appointments are necessary to assess healing, typically with repeat X-rays. Physical therapy may be recommended to restore strength and range of motion once the fracture has healed sufficiently. The open wound type (I or II) generally has a low risk of infection with appropriate treatment.

Complications

• Infection, particularly if the open wound is not properly managed.
• Delayed healing or nonunion, though less common with nondisplaced fractures.
• Stiffness or reduced range of motion in the forearm or wrist.
• Nerve or blood vessel damage, though rare with this fracture type.

Lifestyle & Prevention

• Use protective gear during high-risk activities (e.g., sports, construction).
• Maintain bone health through a balanced diet rich in calcium and vitamin D.
• Avoid falls by using assistive devices if needed, especially in older adults.
• Practice proper techniques to reduce injury risk in sports or manual labor.

When to Seek Professional Help

• Severe pain that does not improve with rest or over-the-counter pain relievers.
• Increased swelling, redness, or drainage from the open wound.
• Numbness, tingling, or weakness in the hand or fingers.
• Inability to move the arm, wrist, or hand.
• Signs of infection, such as fever or chills.

Tips for Medical Coders

Document the fracture type (nondisplaced), location (shaft of left ulna), and the open fracture classification (type I or II). Note the initial encounter status and any associated injuries or treatments. Ensure the open wound is clearly described to support the type I or II designation.