S82.311K Torus fracture of lower end of right tibia, subsequent encounter for fracture with nonunion

Name of the Condition

• Torus fracture of lower end of right tibia, subsequent encounter for fracture with nonunion

Summary

This condition involves a torus (buckle) fracture at the lower end of the right tibia, with nonunion (failure of the fracture to heal) during a subsequent encounter. A torus fracture is an incomplete break where the bone buckles rather than fully separates. Nonunion indicates the fracture has not healed properly, requiring ongoing management. The lower tibia is part of the ankle joint, so this injury may affect stability and mobility, and the nonunion status necessitates specific attention to promote healing or address complications.

Causes

Torus fractures of the lower tibia typically result from low-impact trauma, such as falls or twisting injuries, where axial forces cause the bone to buckle. Nonunion may develop due to inadequate immobilization, poor blood supply to the fracture site, infection, or underlying conditions that impair bone healing (e.g., diabetes, smoking, or nutritional deficiencies). The bone’s flexibility in children makes torus fractures common, but nonunion can occur if healing is disrupted.

Risk Factors

• Participation in activities with a risk of falls or repetitive stress (e.g., sports, playground use)
• Age (pediatric populations are more prone to torus fractures, but nonunion risk increases with delayed or improper treatment)
• Underlying conditions affecting bone health (e.g., osteoporosis, diabetes, or smoking)
• Previous lower leg injuries or surgeries that compromise healing

Symptoms

• Persistent pain and tenderness localized to the lower right leg or ankle
• Swelling and bruising that may not resolve over time
• Difficulty bearing weight or walking on the right leg
• Possible instability or deformity at the fracture site
• Lack of improvement in symptoms despite prior treatment

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and range of motion. Imaging studies, such as X-rays or CT scans, are used to confirm the torus fracture and evaluate nonunion (e.g., visible gap at the fracture site, lack of callus formation). Additional tests (e.g., bone scans) may assess blood flow or healing potential. Clinical history of prior treatment and lack of progress is also considered.

Treatment Options

Treatment focuses on promoting healing or managing nonunion. Options may include:

• Prolonged immobilization (e.g., casting or bracing) to stabilize the fracture
• Surgical intervention (e.g., bone grafting, internal fixation) to stimulate healing
• Physical therapy to restore strength and mobility
• Addressing underlying factors (e.g., smoking cessation, managing diabetes) that impede healing
• Pain management and activity modification to reduce stress on the fracture site

Prognosis and Follow-Up

Prognosis depends on the severity of nonunion and response to treatment. With appropriate management, many fractures eventually heal, but some may require long-term monitoring. Follow-up imaging (e.g., X-rays) is typically performed to assess healing progress. Regular check-ups with a healthcare provider are important to adjust treatment and address complications.

Complications

• Chronic pain or instability at the fracture site
• Increased risk of re-fracture due to weakened bone
• Long-term mobility issues or arthritis in the ankle joint
• Infection (if surgical intervention is required)
• Persistent nonunion requiring additional interventions

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider
• Use protective gear (e.g., braces) during sports or activities with fall risk
• Maintain a healthy diet rich in calcium and vitamin D to support bone health
• Quit smoking or reduce alcohol use, as these can impair healing
• Follow post-treatment instructions carefully to optimize recovery

When to Seek Professional Help

Seek immediate medical attention if you experience:

• Severe or worsening pain, swelling, or bruising
• Inability to bear weight or walk
• Signs of infection (e.g., fever, redness, pus)
• New deformity or instability in the leg
• Lack of improvement in symptoms after initial treatment

Tips for Medical Coders

Document the encounter as a subsequent visit for fracture with nonunion. Ensure clinical notes specify the torus fracture of the lower right tibia, the nonunion status, and any treatments or evaluations performed. Code S82.311K requires clear documentation of the fracture type, location, laterality, and nonunion to support accurate coding.