S52.222M Displaced transverse fracture of shaft of left ulna, subsequent encounter for open fracture type I or II with nonunion

Name of the Condition

• Displaced transverse fracture of shaft of left ulna, subsequent encounter for open fracture type I or II 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 I or II) that has not healed (nonunion), indicating the fracture site remains ununited after prior treatment.

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.
• Poor blood supply to the fracture site, which may impede healing.

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 (type I or II open fracture).
• Lack of healing signs (e.g., persistent pain, no callus formation) indicating nonunion.

Diagnosis

Physical examination to assess tenderness, swelling, and range of motion. Imaging tests, such as X-rays, to confirm the fracture, evaluate displacement, and assess for nonunion. Assessment of the open wound to determine fracture type (I or II). Review of prior treatment and healing progress to confirm nonunion status.

Treatment Options

• Surgical intervention, such as internal fixation with plates or screws, to stabilize the fracture and promote healing.
• Bone grafting to stimulate bone growth and address nonunion.
• Wound care for the open fracture site to prevent infection.
• Immobilization with a cast or splint to support healing.
• Physical therapy to restore function and strength once healing progresses.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, the success of treatment, and the patient’s overall health. Nonunion may require additional interventions, and recovery can be prolonged. Regular follow-up with imaging to monitor healing is essential. Physical therapy is often needed to regain mobility and strength.

Complications

• Infection at the open fracture site.
• Delayed or failed healing (nonunion or malunion).
• Nerve or blood vessel damage.
• Stiffness or reduced range of motion in the forearm or wrist.
• Chronic pain.

Lifestyle & Prevention

• Use protective gear during high-risk activities (e.g., sports, work).
• Maintain bone health through adequate nutrition (calcium, vitamin D) and exercise.
• Avoid falls by using assistive devices if needed, especially in older adults.
• Follow post-injury care instructions to support healing and reduce complications.

When to Seek Professional Help

Seek immediate medical attention for severe pain, visible deformity, open wounds, or signs of infection (e.g., redness, pus). Follow up with a healthcare provider if pain persists, swelling worsens, or there are concerns about healing progress.

Tips for Medical Coders

This code is for a subsequent encounter, so prior treatment and nonunion must be documented. Specify the open fracture type (I or II) and confirm the fracture is displaced and transverse. Document the left ulna shaft involvement and the nonunion status to support code assignment. Ensure encounter timing and fracture details align with clinical notes.