S92.315 Nondisplaced fracture of first metatarsal bone, left foot

Name of the Condition

• Nondisplaced fracture of first metatarsal bone, left foot
• ICD-10 Code: S92.315

Summary

A nondisplaced fracture of the first metatarsal bone in the left foot is a break where the bone fragments remain in their normal alignment. The first metatarsal is the long bone connecting the big toe to the midfoot and is a primary weight-bearing structure. This type of fracture typically results from trauma, such as a direct impact or twisting force, and does not involve displacement of the bone fragments. The injury is localized to the left foot and may affect mobility and stability.

Causes

Direct trauma to the left foot is the most common cause. This can include dropping a heavy object, a sports injury (e.g., twisting the foot during activity), or a fall. High-force impacts may lead to a fracture, though the bone fragments remain in their original position. Repetitive stress from activities like running or jumping can also cause stress 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 at the base of the big toe on the left foot
• Swelling and bruising around the affected area
• Difficulty bearing weight or walking on the injured foot
• Possible mild deformity if the fracture is not perfectly aligned

Diagnosis

A healthcare provider will perform a physical examination to assess pain, swelling, and range of motion. Imaging studies, such as X-rays, are typically used to confirm the fracture and verify that it is nondisplaced. Additional tests may be ordered if there is suspicion of associated injuries or complications.

Treatment Options

Treatment depends on the severity of the fracture but often includes immobilization with a cast or walking boot to protect the bone during healing. Pain management with over-the-counter or prescription medications may be recommended. Physical therapy is sometimes used to restore strength and mobility once the fracture has healed.

Prognosis and Follow-Up

Most nondisplaced fractures of the first metatarsal bone heal well with proper immobilization and rest. Full recovery typically occurs within 6 to 8 weeks, though this may vary based on individual factors. Follow-up appointments are important to monitor healing and ensure the bone has regained stability before resuming normal activities.

Complications

While rare, complications can include delayed healing, nonunion (failure to heal), or infection if the fracture is open. Chronic pain or arthritis may develop in some cases, particularly if the fracture affects joint alignment. Early treatment and adherence to medical advice can reduce these risks.

Lifestyle & Prevention

Wearing supportive footwear during high-impact activities can help prevent fractures. Maintaining bone health through a balanced diet rich in calcium and vitamin D may reduce the risk of stress fractures. Avoiding sudden, forceful impacts to the foot and using proper technique during sports or exercise can also lower the likelihood of injury.

When to Seek Professional Help

Seek medical attention if you experience severe pain, swelling, or difficulty bearing weight on the left foot after an injury. Immediate care is recommended if the foot appears deformed, or if there are signs of infection, such as redness, warmth, or pus.

Tips for Medical Coders

This code (S92.315) specifies a nondisplaced fracture of the first metatarsal bone in the left foot. Documentation should clearly indicate the absence of displacement and the laterality (left foot) to support accurate coding. Ensure the medical record includes details about the mechanism of injury, clinical findings, and any imaging results confirming the fracture type.