S52.223H Displaced transverse fracture of shaft of unspecified ulna, subsequent encounter for open fracture type I or II with delayed healing

Name of the Condition

• Displaced transverse fracture of shaft of unspecified ulna, subsequent encounter for open fracture type I or II with delayed healing

Summary

A displaced transverse fracture of the shaft of the unspecified ulna is a horizontal break across the long, central portion of the ulna bone (one of the two forearm bones) where the bone fragments are shifted out of alignment. This is a subsequent encounter for an open fracture type I or II, meaning the skin over the fracture site was previously broken (type I) or had a wound larger than 1 cm without extensive soft tissue damage (type II), and healing is progressing more slowly than expected. The term "unspecified" indicates the side (right or left) is not documented.

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.
• Inadequate immobilization or non-compliance with 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.
• Delayed healing signs, such as lack of progress in radiographic evidence over time.

Diagnosis

Physical examination to assess tenderness, swelling, and range of motion. Imaging studies, typically X-rays, to confirm the fracture type, displacement, and healing status. Evaluation of the open wound (if present) to classify the fracture as type I or II. Assessment of healing progress through serial imaging to determine if healing is delayed.

Treatment Options

• Immobilization with a cast or splint to stabilize the fracture and promote healing.
• Surgical intervention, such as internal fixation, if the fracture is unstable or fails to heal with conservative measures.
• Wound care for open fractures to prevent infection.
• Pain management with medications or other modalities.
• Physical therapy to restore function and strength once healing allows.

Prognosis and Follow-Up

Prognosis depends on the severity of the fracture, adherence to treatment, and individual healing capacity. Delayed healing may extend recovery time, requiring closer monitoring. Follow-up appointments with imaging to assess progress are typically scheduled until healing is confirmed. Return to normal activities varies but may be prolonged with delayed healing.

Complications

• Nonunion or malunion of the fracture.
• Infection, particularly with open fractures.
• Nerve or vascular damage in the forearm.
• Chronic pain or stiffness.
• Reduced range of motion or functional impairment.

Lifestyle & Prevention

• Use protective gear during high-risk activities (e.g., sports).
• Maintain bone health through adequate nutrition (calcium, vitamin D) and exercise.
• Avoid smoking, which can impair bone healing.
• Follow post-injury care instructions carefully to support recovery.

When to Seek Professional Help

• Increasing pain, swelling, or redness.
• Signs of infection (e.g., fever, pus, warmth at the site).
• Numbness, tingling, or changes in skin color distal to the injury.
• Lack of healing progress as indicated by the healthcare provider.

Tips for Medical Coders

Document the fracture type (open I or II), encounter stage (subsequent), and delayed healing status clearly. Ensure the unspecified ulna side is noted if not documented. Include details on treatment approaches and healing progress to support code assignment. Verify that the open fracture classification aligns with clinical documentation.