S92.34 Fracture of fourth metatarsal bone

Name of the Condition

• Fracture of fourth metatarsal bone
• ICD-10 code: S92.34

Summary

A fracture of the fourth metatarsal bone is a break in the long bone located in the forefoot, specifically the fourth of the five metatarsals. This injury typically results from trauma or repetitive stress and may vary in severity, depending on the force of impact and alignment of the bone fragments.

Causes

Direct trauma to the foot, such as a fall, impact during sports, or a heavy object dropped on the foot, is a common cause. Stress fractures may also occur from overuse, particularly in activities involving repetitive weight-bearing or sudden increases in physical activity.

Risk Factors

• Participation in high-impact sports (e.g., running, basketball, soccer)
• Wearing improper or non-supportive footwear
• Conditions that weaken bones, such as osteoporosis
• Advanced age, which may reduce bone density and balance
• Previous foot injuries or fractures

Symptoms

• Pain localized to the outer midfoot area
• Swelling and bruising around the affected bone
• Difficulty bearing weight or walking on the foot
• Possible deformity if the fracture is displaced

Diagnosis

A healthcare provider will perform a physical examination to assess pain, swelling, and range of motion. Imaging tests, such as X-rays, are typically used to confirm the fracture and evaluate alignment. In some cases, additional imaging like an MRI may be ordered to assess for stress fractures or soft tissue damage.

Treatment Options

• Rest and limited weight-bearing activities to allow healing
• Immobilization with a cast, boot, or walking aid to maintain alignment
• Pain management with NSAIDs or acetaminophen
• Surgical intervention may be required for displaced or complex fractures

Prognosis and Follow-Up

Most fractures of the fourth metatarsal bone heal well with appropriate treatment. Recovery time varies depending on the severity of the injury and adherence to treatment plans. Follow-up care may include repeat imaging to monitor healing and gradual return to activity under medical guidance.

Complications

• Delayed healing or nonunion
• Malunion, where the bone heals in an improper position
• Chronic pain or arthritis in the affected area
• Nerve or soft tissue damage from the initial injury

Lifestyle & Prevention

• Wear supportive, properly fitted footwear during activities
• Gradually increase physical activity to avoid overuse injuries
• Maintain bone health through adequate calcium and vitamin D intake
• Use protective gear during high-impact sports

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, inability to bear weight, visible deformity, or signs of infection (e.g., redness, warmth, fever) after an injury to the foot.

Tips for Medical Coders

When coding for a fracture of the fourth metatarsal bone, ensure documentation specifies the exact metatarsal involved (fourth) and any details about displacement, open/closed status, or subsequent care. The code S92.34 is used for this specific condition; verify that the medical record supports the diagnosis and includes relevant clinical details for accurate coding.