S52.266D Nondisplaced segmental fracture of shaft of ulna, unspecified arm, subsequent encounter for closed fracture with routine healing

Name of the Condition

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

Summary

A nondisplaced segmental fracture of the shaft of the ulna, unspecified arm, is a break in the long, straight portion of the ulna bone (one of the two forearm bones) where there are two separate fracture lines creating a free-floating bone segment, and the bone 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. The term "subsequent encounter for closed fracture with routine healing" indicates this is a follow-up visit for a fracture where the skin is intact and healing is progressing normally.

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 healing progress. Review of prior imaging to compare with current status.

Treatment Options

Immobilization with a cast or splint to support the arm and promote healing. Pain management with over-the-counter or prescription medications. Physical therapy to restore strength and mobility once healing allows. Follow-up imaging to monitor fracture alignment and healing.

Prognosis and Follow-Up

Most nondisplaced segmental fractures of the ulna shaft heal well with proper immobilization and care. Routine healing typically occurs within 6–8 weeks, though recovery may vary. Follow-up appointments are important to assess progress and adjust treatment as needed. Full function often returns, but some residual stiffness or weakness may persist.

Complications

Delayed union or nonunion of the fracture. Infection if the skin is compromised (not applicable here as the fracture is closed). Nerve or blood vessel damage near the fracture site. Chronic pain or reduced range of motion.

Lifestyle & Prevention

Avoid high-risk activities until cleared by a healthcare provider. Use protective gear during sports or activities with fall risks. 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. Numbness, tingling, or weakness in the hand or fingers. Difficulty moving the arm or wrist. Signs of infection, such as redness, warmth, or drainage.

Tips for Medical Coders

Use this code for a subsequent encounter (D) of a closed, nondisplaced segmental fracture of the ulna shaft with routine healing. Document the fracture type, arm affected, and healing status to support code assignment. Ensure the encounter is not the initial treatment or for a fracture with complications.