S52.235F Nondisplaced oblique fracture of shaft of left ulna, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing

Name of the Condition

• Nondisplaced oblique fracture of shaft of left ulna, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing

Summary

A nondisplaced 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 remain aligned. This type of fracture involves the main body of the ulna and is classified as an open fracture (type IIIA, IIIB, or IIIC), indicating a break in the skin with significant contamination or tissue damage. The term "subsequent encounter" denotes ongoing care after the initial treatment phase, and "routine healing" confirms the fracture is progressing without complications.

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. Open fractures may result from the same mechanisms if the force also disrupts the skin, leading to exposure of the fracture site.

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.
• Activities involving high-velocity impacts or penetrating trauma.

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.
• Open wound at the fracture site (for open fracture types IIIA, IIIB, or IIIC).

Diagnosis

Physical examination to assess tenderness, swelling, and range of motion. Imaging tests, such as X-rays, to confirm the fracture type and alignment. Evaluation of the open wound for contamination or tissue damage. Assessment of healing progress during subsequent encounters.

Treatment Options

Immobilization with a cast or splint to support the fracture. Pain management with medications. Wound care for open fractures to prevent infection. Physical therapy to restore strength and mobility. Monitoring for signs of complications during follow-up visits.

Prognosis and Follow-Up

With routine healing, the fracture typically heals within the expected timeframe, and function is often fully restored. Follow-up appointments are necessary to assess progress and adjust treatment as needed. Long-term outcomes depend on the severity of the initial injury and adherence to care plans.

Complications

Infection at the open fracture site. Delayed healing or nonunion. Nerve or blood vessel damage. Chronic pain or stiffness. Reduced range of motion.

Lifestyle & Prevention

Avoid high-risk activities that may lead to falls or trauma. Use protective gear during sports or work. Maintain bone health through diet and exercise. Follow post-injury care instructions to support healing.

When to Seek Professional Help

Increased pain, swelling, or redness at the injury site. Signs of infection, such as fever or pus. Numbness or tingling in the hand or fingers. Difficulty moving the arm or wrist. Open wound that does not heal or worsens.

Tips for Medical Coders

Document the fracture type (IIIA, IIIB, or IIIC) and confirm routine healing status. Note the subsequent encounter context and any relevant clinical details. Ensure alignment with ICD-10-CM guidelines for open fracture classification and healing progress.