S92.253K Displaced fracture of navicular [scaphoid] of unspecified foot, subsequent encounter for fracture with nonunion

Name of the Condition

• Displaced fracture of navicular [scaphoid] of unspecified foot, subsequent encounter for fracture with nonunion

Summary

A displaced fracture of the navicular (scaphoid) bone in the foot involves a break where the bone fragments are no longer aligned. The navicular is a tarsal bone in the midfoot, and displacement can result from trauma or overuse. This condition is classified as a subsequent encounter for fracture with nonunion, indicating the fracture has failed to heal properly after an initial injury. Nonunion may affect mobility and requires evaluation to determine the extent of the injury and appropriate management.

Causes

Typically caused by direct trauma, such as falls, sports injuries, or motor vehicle accidents. Stress fractures may develop from repetitive activities or overuse, particularly in athletes or individuals with high-impact occupations. Nonunion can result from inadequate initial treatment, poor blood supply to the bone, or persistent motion at the fracture site.

Risk Factors

• Participation in high-impact sports or activities.
• Osteoporosis or other bone-weakening conditions.
• Older age due to decreased bone density.
• Previous foot injuries or fractures.
• Improper footwear or inadequate protective gear.
• Smoking or other factors that impair bone healing.

Symptoms

• Persistent pain at the fracture site, often worsening with weight-bearing.
• Swelling and tenderness in the midfoot that does not resolve with time.
• Difficulty walking or inability to bear weight on the affected foot.
• Possible deformity or instability of the midfoot.

Diagnosis

Physical examination to assess pain, swelling, and range of motion. Imaging tests, such as X-rays, CT scans, or MRIs, to visualize the fracture and confirm nonunion. Additional tests may be performed to evaluate blood flow or bone density if underlying conditions are suspected.

Treatment Options

Treatment depends on the severity of the nonunion and may include immobilization with a cast or brace, surgical intervention to realign and stabilize the bone, bone grafting to promote healing, or physical therapy to restore function. Pain management and activity modification are often part of the plan.

Prognosis and Follow-Up

Prognosis varies based on the extent of the nonunion and response to treatment. Regular follow-up with imaging is typically required to monitor healing. Some cases may require long-term management to address persistent symptoms or functional limitations.

Complications

• Chronic pain or disability.
• Arthritis in the midfoot due to improper healing.
• Infection, particularly if surgical intervention is needed.
• Need for additional surgeries if initial treatment is unsuccessful.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use proper footwear and protective gear during sports or work.
• Maintain bone health through adequate nutrition and exercise.
• Follow post-treatment instructions carefully to support healing.

When to Seek Professional Help

Seek care if pain persists or worsens, if swelling does not improve, or if difficulty walking develops. Prompt evaluation is important if signs of infection (e.g., redness, fever) or new deformity occur.

Tips for Medical Coders

This code is used for a displaced fracture of the navicular bone in the unspecified foot, classified as a subsequent encounter for fracture with nonunion. Documentation should specify the fracture type, location, and the presence of nonunion. Ensure the encounter is subsequent (not initial) and that nonunion is clearly documented to support code assignment.