M84.375 Stress fracture, left foot

Name of the Condition

• Common Name: Stress Fracture
• Medical Term: Stress fracture of the left foot

Summary

A stress fracture in the left foot is a small crack or severe bruising within a bone, typically resulting from repetitive stress or overuse. These fractures often develop gradually and may not be visible on initial imaging, requiring careful clinical evaluation.

Causes

Stress fractures in the left foot commonly arise from repetitive force or overuse, such as prolonged running, jumping, or high-impact activities. Sudden increases in physical activity intensity or volume, improper training techniques, and inadequate recovery can also contribute to their development.

Risk Factors

• Participation in high-impact sports or activities that involve repetitive weight-bearing
• Sudden escalation in activity level without proper conditioning
• Underlying bone conditions like osteoporosis or osteopenia
• Poor footwear or biomechanical abnormalities affecting gait
• Nutritional deficiencies, particularly in calcium or vitamin D

Symptoms

• Localized pain that worsens with activity and improves with rest
• Swelling, tenderness, or bruising around the affected area
• Pain that may persist even at rest in advanced cases
• Possible difficulty bearing weight on the affected limb

Diagnosis

Diagnosis involves a physical examination to assess pain, swelling, and tenderness. Imaging tests such as X-rays, MRI, or bone scans may be used to identify fractures not visible on standard X-rays, especially in early stages.

Treatment Options

• Rest and avoidance of activities that exacerbate the injury
• Use of protective footwear or braces to stabilize the foot
• Physical therapy to strengthen surrounding muscles and improve flexibility
• Gradual return to activity while monitoring for recurrence

Prognosis and Follow-Up

Most stress fractures heal with proper rest and treatment, though recovery time varies. Follow-up care may include monitoring for healing progress and adjusting activity levels to prevent re-injury.

Complications

• Delayed healing or nonunion if not properly managed
• Progression to a complete fracture with continued activity
• Chronic pain or functional limitations if untreated

Lifestyle & Prevention

• Gradually increase physical activity intensity and volume
• Use appropriate footwear and consider orthotics for biomechanical support
• Maintain adequate nutrition, especially calcium and vitamin D intake
• Incorporate rest days and cross-training to reduce repetitive stress

When to Seek Professional Help

Seek medical attention if pain persists despite rest, worsens, or is accompanied by significant swelling, bruising, or difficulty bearing weight.

Tips for Medical Coders

Document the specific location (left foot) and confirm the diagnosis of a stress fracture. Ensure clinical documentation supports the use of M84.375, including details of the affected site and any contributing factors.