S52.265D Nondisplaced segmental fracture of shaft of ulna, left arm, subsequent encounter for closed fracture with routine healing

Name of the Condition

• Nondisplaced segmental fracture of shaft of ulna, left arm, subsequent encounter for closed fracture with routine healing

Summary

A nondisplaced segmental fracture of the shaft of the ulna, left 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 significant displacement. The term "subsequent encounter" indicates this is a follow-up visit for the fracture, and "closed fracture with routine healing" means the skin is intact and the fracture is healing as expected without complications.

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 common in nondisplaced cases).

Diagnosis

Physical examination to assess tenderness, swelling, and range of motion. Imaging tests, such as X-rays, to confirm the fracture and evaluate alignment and healing progress. Clinical documentation of the fracture type (nondisplaced, segmental) and status (closed, routine healing) to support the diagnosis.

Treatment Options

Immobilization with a cast or splint to stabilize the fracture and promote healing. Pain management with over-the-counter or prescription medications. Physical therapy to restore strength and range of motion once healing allows. Follow-up imaging to monitor progress and ensure proper alignment.

Prognosis and Follow-Up

Most nondisplaced segmental fractures of the ulna shaft heal well with appropriate immobilization and care. Healing typically occurs over 6–8 weeks, but follow-up visits are necessary to assess progress and adjust treatment. Routine healing indicates no complications, and most patients regain full function with minimal long-term effects.

Complications

Delayed union or nonunion of the fracture if healing is impaired. Malunion, where the bone heals in an abnormal position. Nerve or blood vessel damage, though rare in nondisplaced fractures. Infection, if the fracture were open (not applicable here as it is closed).

Lifestyle & Prevention

Avoid high-risk activities until fully healed. Use protective gear during sports or work that involves forearm trauma. Maintain bone health through a balanced diet rich in calcium and vitamin D. Engage in regular weight-bearing exercise to support bone density.

When to Seek Professional Help

Increased pain, swelling, or bruising that worsens over time. Numbness, tingling, or weakness in the hand or fingers. Difficulty moving the arm or wrist despite immobilization. Signs of infection, such as redness, warmth, or pus at the injury site.

Tips for Medical Coders

Document the fracture type (nondisplaced, segmental), location (shaft of ulna, left arm), and encounter status (subsequent) clearly. Confirm the fracture is closed and healing routinely to support the code. Include details of imaging or clinical findings that verify alignment and healing progress. Ensure documentation aligns with the ICD-10-CM guidelines for subsequent encounters and routine healing.