S92.352B Displaced fracture of fifth metatarsal bone, left foot, initial encounter for open fracture

Name of the Condition

• Technical Term: Displaced fracture of fifth metatarsal bone, left foot, initial encounter for open fracture
• Common Name: Broken fifth metatarsal (left foot, open fracture)

Summary

A displaced fracture of the fifth metatarsal bone in the left foot is a break where the bone fragments shift out of their normal alignment. This is an initial encounter for an open fracture, meaning the skin is broken, exposing the fracture site. The fifth metatarsal is the long bone on the outer edge of the foot, and displacement can affect stability and healing. Open fractures require prompt medical attention to reduce infection risk.

Causes

Direct trauma to the foot, such as a fall, twist, or impact, is the primary cause. Sports injuries, missteps, or accidents involving the foot are common triggers. Repetitive stress from activities like running or jumping may also lead to fractures over time.

Risk Factors

• Participation in high-impact sports (e.g., 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 and tenderness on the outer edge of the left foot
• Swelling or bruising in the affected area
• Difficulty bearing weight on the left foot
• Possible deformity if the fracture is severely displaced
• Visible wound or open skin at the fracture site (for open fractures)

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 the degree of displacement. For open fractures, the provider will also assess the wound for contamination or infection.

Treatment Options

• Immediate wound care to clean and dress the open fracture site
• Antibiotics to prevent infection
• Immobilization with a cast, splint, or boot to stabilize the fracture
• Surgical intervention may be required to realign and fix the displaced bone fragments
• Pain management with medications as needed
• Follow-up imaging to monitor healing progress

Prognosis and Follow-Up

Prognosis depends on the severity of displacement, the extent of soft tissue damage, and adherence to treatment. Most fractures heal within 6–8 weeks with proper immobilization. Follow-up appointments are necessary to assess healing and adjust treatment. Physical therapy may be recommended to restore strength and mobility once the fracture is stable.

Complications

• Infection at the open fracture site
• Delayed healing or nonunion
• Malunion (improper healing leading to deformity)
• Nerve or blood vessel damage
• Chronic pain or arthritis in the foot

Lifestyle & Prevention

• Wear supportive, properly fitting footwear during activities
• Use protective gear (e.g., ankle braces) during high-impact sports
• Gradually increase activity intensity to avoid overuse injuries
• Maintain bone health with a balanced diet rich in calcium and vitamin D
• Avoid walking or running on uneven surfaces when fatigued

When to Seek Professional Help

Seek immediate medical attention if you experience:

• Severe pain, swelling, or deformity in the left foot
• An open wound near the fracture site
• Inability to bear weight on the left foot
• Signs of infection (e.g., redness, pus, fever)

Tips for Medical Coders

Document the laterality (left foot), displacement status, and encounter type (initial for open fracture) clearly. Ensure the open fracture is specified, as this impacts coding and may require additional documentation of wound care or infection risk. Verify that the fracture is not associated with a more severe injury (e.g., joint involvement) to avoid miscoding.