S52.232N Displaced oblique fracture of shaft of left ulna, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Name of the Condition

• Displaced oblique fracture of shaft of left ulna, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Summary

A displaced oblique fracture of the shaft of the left ulna is a break in the long, straight portion of the left ulna bone (one of the two forearm bones) where the fracture line runs at an angle across the bone, and the bone fragments are misaligned. This code applies to a subsequent medical encounter for an open fracture classified as type IIIA, IIIB, or IIIC, indicating significant soft tissue damage, and the fracture has failed to heal (nonunion).

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 an angled 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.
• Poor blood supply to the fracture site, increasing nonunion risk.

Symptoms

• Persistent 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.
• Open wound at the fracture site (for open fractures).
• Signs of nonunion, such as lack of healing progress over time.

Diagnosis

Physical examination to assess tenderness, swelling, and range of motion. Imaging tests, such as X-rays, to confirm the fracture type, displacement, and nonunion. Evaluation of soft tissue damage for open fractures. Assessment of healing progress through serial imaging.

Treatment Options

Surgical intervention to realign and stabilize the fracture, often with internal fixation devices. Bone grafting may be used to promote healing in cases of nonunion. Wound care for open fractures to prevent infection. Physical therapy to restore function and strength. Monitoring for complications, such as infection or further nonunion.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, soft tissue damage, and response to treatment. Nonunion may require additional interventions. Regular follow-up with imaging to assess healing. Long-term monitoring for functional recovery and potential complications.

Complications

Infection, particularly with open fractures. Nonunion or delayed healing. Nerve or blood vessel damage. Chronic pain or stiffness. Reduced range of motion or functional impairment.

Lifestyle & Prevention

Avoid high-risk activities that may lead to falls or trauma. Maintain bone health through proper nutrition and exercise. Use protective gear during sports or activities with fall risks. Follow post-treatment guidelines to support healing.

When to Seek Professional Help

Persistent or worsening pain, swelling, or deformity. Signs of infection, such as fever, redness, or drainage. Difficulty moving the arm or hand. Open wound at the fracture site. Lack of healing progress over time.

Tips for Medical Coders

Document the fracture type (IIIA, IIIB, or IIIC) and confirmation of nonunion. Specify the encounter as subsequent and note the open fracture classification. Include details on treatment approaches and healing status to support code assignment.