S52.222N Displaced transverse fracture of shaft of left ulna, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Name of the Condition

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

Summary

A displaced transverse fracture of the shaft of the left ulna is a horizontal break across the long, central portion of the ulna bone in the forearm, with the bone fragments shifted out of alignment. This code applies to a subsequent encounter for an open fracture (type IIIA, IIIB, or IIIC) that has progressed to nonunion, meaning the fracture has failed to heal properly after an extended period.

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. Open fractures may result from severe trauma that breaches the skin, and nonunion can occur due to inadequate healing, infection, or poor blood supply.

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 or inadequate initial treatment.

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 remains displaced.
• Open wound at the fracture site (type IIIA, IIIB, or IIIC open fracture).
• 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 and evaluate alignment. Assessment of the open wound to determine fracture type (IIIA, IIIB, or IIIC). Evaluation for nonunion through imaging and clinical signs of delayed healing.

Treatment Options

Surgical intervention to realign and stabilize the fracture, often with internal fixation devices. Debridement of the open wound to remove damaged tissue and reduce infection risk. Bone grafting or other procedures to promote healing in cases of nonunion. Antibiotics to treat or prevent infection. Physical therapy to restore function and strength after healing.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, type of open injury, and success of treatment. Nonunion may require additional interventions, such as revision surgery or bone stimulation. Regular follow-up with imaging to monitor healing progress. Long-term rehabilitation to regain mobility and strength.

Complications

Infection at the fracture site, particularly with open fractures. Nerve or blood vessel damage due to the injury or surgery. Chronic pain or stiffness. Delayed union or nonunion, requiring further treatment. Malunion, where the bone heals in an abnormal position.

Lifestyle & Prevention

Avoid high-risk activities or use protective gear during sports. Maintain bone health through a balanced diet rich in calcium and vitamin D. Engage in regular weight-bearing exercise to strengthen bones. Follow post-injury care instructions to support healing and reduce complications.

When to Seek Professional Help

Persistent or worsening pain, swelling, or deformity. Signs of infection, such as fever, redness, or drainage from the wound. Difficulty moving the arm or hand. Delayed healing or lack of progress in recovery.

Tips for Medical Coders

This code is for a subsequent encounter of a displaced transverse fracture of the left ulna shaft with nonunion, specifically for open fracture types IIIA, IIIB, or IIIC. Document the fracture type, nonunion status, and encounter type (subsequent) to support coding. Ensure alignment with clinical notes and imaging results.