S82.854M Nondisplaced trimalleolar fracture of right lower leg, subsequent encounter for open fracture type I or II with nonunion

Name of the Condition

• Nondisplaced trimalleolar fracture of right lower leg, subsequent encounter for open fracture type I or II with nonunion
• ICD-10 Code: S82.854M

Summary

This condition describes a nondisplaced fracture of the right lower leg involving all three malleoli (medial, lateral, and posterior) of the ankle joint. It is a subsequent encounter for an open fracture type I or II that has progressed to nonunion, meaning the fracture site has failed to heal properly. The injury disrupts ankle stability and may require specialized treatment to address both the open fracture and delayed healing.

Causes

Trimalleolar fractures typically result from high-impact trauma, such as falls, motor vehicle accidents, or direct force to the ankle. The open fracture component occurs when the injury penetrates the skin, exposing the fracture site. Nonunion may develop due to inadequate initial treatment, poor blood supply, infection, or excessive movement at the fracture site.

Risk Factors

• Advanced age or reduced bone density.
• Osteoporosis or other bone-weakening conditions.
• Previous ankle injuries or joint instability.
• Inadequate initial fracture management.
• Infection or poor wound healing at the fracture site.

Symptoms

• Persistent pain, swelling, or bruising around the ankle.
• Inability to bear weight on the affected leg.
• Visible or suspected open wound near the fracture site.
• Tenderness, instability, or numbness in the foot or ankle.
• Delayed healing or persistent fracture line on imaging.

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and wound status, followed by imaging studies such as X-rays or CT scans to confirm the fracture pattern, nonunion, and open fracture type. Clinical evaluation of the wound and surrounding tissue is critical to determine the extent of injury and guide treatment.

Treatment Options

Treatment focuses on addressing the nonunion and open fracture. Options may include surgical intervention to stabilize the fracture, bone grafting to promote healing, and wound care to manage the open fracture. Immobilization, physical therapy, and monitoring for infection are also common components of care.

Prognosis and Follow-Up

Prognosis depends on the success of treatment and the patient’s overall health. Follow-up care typically involves regular imaging to assess healing and functional recovery. Long-term monitoring may be necessary to address complications such as arthritis or persistent instability.

Complications

• Delayed or failed fracture healing (nonunion).
• Infection at the fracture or wound site.
• Chronic ankle pain or instability.
• Post-traumatic arthritis.
• Nerve or vascular damage.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use protective footwear or braces to support the ankle during recovery.
• Maintain bone health through proper nutrition and exercise.
• Follow post-treatment instructions to minimize re-injury risk.

When to Seek Professional Help

Seek immediate medical attention for worsening pain, swelling, redness, or drainage from the wound. Contact a healthcare provider if you experience increased instability, numbness, or difficulty bearing weight on the affected leg.

Tips for Medical Coders

Document the subsequent encounter, open fracture type (I or II), and nonunion clearly in the medical record. Ensure the fracture is confirmed as nondisplaced and specify the right lower leg. Include details on treatment provided and any complications to support accurate coding.