S92.356B Nondisplaced fracture of fifth metatarsal bone, unspecified foot, initial encounter for open fracture

Name of the Condition

• Technical Term: Nondisplaced fracture of fifth metatarsal bone, unspecified foot, initial encounter for open fracture
• ICD-10 Code: S92.356B
• Common Name: Broken fifth metatarsal (unspecified foot), open fracture

Summary

A nondisplaced fracture of the fifth metatarsal bone in the unspecified foot is a break in the long bone on the outer edge of the foot where the bone fragments remain in their normal alignment. This is an open fracture, meaning the skin is broken, exposing the fracture site. The injury typically results from trauma and requires medical evaluation to assess the open wound and guide treatment.

Causes

Direct trauma to the foot, such as a fall, twist, or impact, is the primary cause. Open fractures may occur when the force of the injury breaks the skin, exposing the bone. Repetitive stress from activities like running or jumping can 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 foot
• Swelling or bruising in the affected area
• Difficulty bearing weight or walking
• Visible wound or break in the skin at the fracture site
• Possible deformity if the fracture is displaced (though this code specifies nondisplaced)

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 determine its alignment. The open wound will also be evaluated for contamination or infection.

Treatment Options

• Wound care to clean and dress the open fracture site
• Immobilization with a cast or splint to stabilize the bone
• Antibiotics to prevent infection
• Pain management with medications
• Surgical intervention if the fracture requires stabilization or if the wound is severe

Prognosis and Follow-Up

With proper treatment, most nondisplaced fractures heal within 6–8 weeks. Follow-up appointments are necessary to monitor healing and adjust treatment as needed. Physical therapy may be recommended to restore strength and mobility.

Complications

• Infection at the open wound site
• Delayed healing due to poor blood supply or contamination
• Nonunion or malunion of the fracture
• Chronic pain or stiffness in the foot

Lifestyle & Prevention

• Wear supportive footwear during activities
• Avoid high-impact sports if you have weak bones or previous injuries
• Maintain bone health with a balanced diet and regular exercise
• Use protective gear during sports to reduce injury risk

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or an open wound after a foot injury. Signs of infection, such as redness, pus, or fever, also require prompt evaluation.

Tips for Medical Coders

Document the location (unspecified foot), fracture type (nondisplaced), and encounter type (initial for open fracture) clearly. Note the open wound status and any associated treatments, as these details are critical for accurate coding. Ensure documentation supports the "initial encounter" designation and the open fracture characteristic.