S92.311P Displaced fracture of first metatarsal bone, right foot, subsequent encounter for fracture with malunion

Name of the Condition

• Displaced fracture of first metatarsal bone, right foot, subsequent encounter for fracture with malunion
• ICD-10 Code: S92.311P

Summary

This condition involves a break in the first metatarsal bone of the right foot where the bone fragments are displaced and have healed in a non-anatomic position (malunion). It is classified as a subsequent encounter, indicating follow-up care after the initial fracture treatment. The first metatarsal is a critical weight-bearing bone, and malunion can affect foot function and stability.

Causes

Direct trauma or impact to the right foot is the primary cause, such as a fall, sports injury, or high-force impact. Malunion occurs when the bone heals improperly, often due to inadequate initial alignment, poor immobilization, or delayed treatment.

Risk Factors

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

Symptoms

• Persistent pain at the injury site
• Swelling and bruising around the right foot
• Difficulty bearing weight on the affected foot
• Altered gait or foot mechanics
• Possible visible deformity if the malunion is severe

Diagnosis

A healthcare provider will perform a physical examination to assess pain, swelling, and range of motion. Imaging studies, such as X-rays, are used to confirm the malunion and evaluate bone alignment. The provider will also review the patient’s history of the initial fracture and treatment.

Treatment Options

Treatment depends on the severity of the malunion and symptoms. Options may include:

• Pain management with medications
• Physical therapy to improve mobility and strength
• Orthotic devices or supportive footwear
• Surgical intervention to realign the bone, if necessary

Prognosis and Follow-Up

Prognosis varies based on the degree of malunion and patient factors. Many patients experience improved function with conservative management, but severe cases may require surgery. Regular follow-up is important to monitor healing and adjust treatment as needed.

Complications

• Chronic pain or discomfort
• Altered foot mechanics leading to gait abnormalities
• Increased risk of future fractures
• Potential need for surgical correction

Lifestyle & Prevention

• Wear supportive, properly fitting footwear
• Avoid high-impact activities that strain the foot
• Maintain bone health through diet and exercise
• Seek prompt treatment for foot injuries to reduce malunion risk

When to Seek Professional Help

Consult a healthcare provider if you experience:

• Worsening pain or swelling
• Difficulty walking or bearing weight
• New deformity or changes in foot shape
• Signs of infection (e.g., redness, warmth, fever)

Tips for Medical Coders

This code is used for a subsequent encounter for a displaced fracture of the first metatarsal bone, right foot, with malunion. Documentation should specify the malunion and confirm it is a follow-up visit. Ensure the encounter type (subsequent) and malunion are clearly documented to support accurate coding.