S92.335K Nondisplaced fracture of third metatarsal bone, left foot, subsequent encounter for fracture with nonunion

Name of the Condition

• Nondisplaced fracture of third metatarsal bone, left foot, subsequent encounter for fracture with nonunion.

Summary

A nondisplaced fracture of the third metatarsal bone in the left foot is a break in the long bone connecting the ankle to the toes, where the bone fragments remain in their normal alignment. This code applies to a subsequent encounter when the fracture has failed to heal (nonunion) after an initial injury. Nonunion occurs when the bone does not properly fuse during the healing process, requiring ongoing medical management.

Causes

Direct trauma to the left foot, such as a fall, sports injury, or repetitive stress, is a common cause. Nonunion may develop due to inadequate immobilization, poor blood supply to the bone, infection, or underlying conditions that impair healing, such as diabetes or smoking.

Risk Factors

• Participation in high-impact sports or activities with repetitive foot stress
• Wearing improper or non-supportive footwear
• Conditions that weaken bones, such as osteoporosis or vitamin D deficiency
• Advanced age, which may reduce bone density and healing capacity
• Previous foot injuries or surgeries that disrupt blood flow
• Lifestyle factors like smoking or poor nutrition

Symptoms

• Persistent pain and tenderness in the midfoot area of the left foot
• Swelling and bruising around the affected bone
• Difficulty bearing weight or walking on the left foot
• Possible clicking or grinding sensation with movement
• No visible deformity due to the nondisplaced nature of the fracture

Diagnosis

A healthcare provider will perform a physical examination to assess pain, swelling, and range of motion. Imaging tests, such as X-rays or CT scans, are typically used to confirm the fracture and evaluate for nonunion. Additional tests, like bone scans, may be ordered to assess bone healing activity.

Treatment Options

Treatment focuses on promoting bone healing and may include immobilization with a cast or brace, physical therapy to restore strength and mobility, and pain management. In some cases, surgical intervention, such as bone grafting or internal fixation, may be necessary to address nonunion.

Prognosis and Follow-Up

Prognosis depends on the severity of the nonunion and response to treatment. Regular follow-up appointments are essential to monitor healing progress, adjust treatment plans, and address complications. Most patients can expect gradual improvement with appropriate care, though recovery may be prolonged.

Complications

• Chronic pain or discomfort in the left foot
• Persistent nonunion requiring additional intervention
• Increased risk of future fractures due to weakened bone
• Limited mobility or functional impairment
• Potential for arthritis in the affected joint over time

Lifestyle & Prevention

• Wear supportive, properly fitting footwear to reduce stress on the foot
• Avoid high-impact activities that may worsen the injury
• Maintain a healthy diet rich in calcium and vitamin D to support bone health
• Quit smoking, as it impairs bone healing
• Follow post-treatment guidelines for activity restrictions and rehabilitation

When to Seek Professional Help

Seek immediate medical attention if you experience severe pain, swelling, or difficulty walking, or if symptoms worsen despite treatment. Contact your healthcare provider if you notice signs of infection, such as redness, warmth, or drainage from the foot.

Tips for Medical Coders

This code is specific to a subsequent encounter for a nondisplaced fracture of the third metatarsal bone in the left foot with nonunion. Documentation should clearly indicate the fracture status (nondisplaced), location (left foot, third metatarsal), and the presence of nonunion. Ensure the encounter is classified as "subsequent" and that the fracture is not healing as expected.