S92.354K Nondisplaced fracture of fifth metatarsal bone, right foot, subsequent encounter for fracture with nonunion

Name of the Condition

• Technical Term: Nondisplaced fracture of fifth metatarsal bone, right foot, subsequent encounter for fracture with nonunion
• ICD-10 Code: S92.354K
• Common Name: Broken fifth metatarsal (right foot, nonunion)

Summary

A nondisplaced fracture of the fifth metatarsal bone in the right foot, with nonunion, is a break in the long bone on the outer edge of the foot where the bone fragments remain in their normal alignment but have failed to heal properly after an initial injury. This condition is documented during a subsequent encounter (follow-up visit) and indicates that the fracture site has not fused, requiring ongoing management to promote healing or address complications.

Causes

Direct trauma to the right foot, such as a fall or twist, is the primary cause of the initial fracture. Nonunion may develop due to inadequate immobilization, poor blood supply to the bone, infection, or excessive movement at the fracture site during the healing process. Repetitive stress or delayed treatment of the initial injury can also contribute to nonunion.

Risk Factors

• Participation in high-impact sports (e.g., basketball, soccer)
• Wearing improper or non-supportive footwear
• Conditions that weaken bones, such as osteoporosis or diabetes
• Advanced age, which may reduce bone density and healing capacity
• Previous foot injuries or fractures that did not heal correctly

Symptoms

• Persistent pain and tenderness on the outer edge of the right foot
• Swelling or bruising that does not resolve over time
• Difficulty bearing weight or walking, even with rest
• Possible clicking or grinding sensation at the fracture site
• No visible deformity, but discomfort may worsen with activity

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 used to confirm nonunion by showing a persistent gap or lack of bone healing at the fracture site. Additional tests may evaluate blood flow or rule out infection if needed.

Treatment Options

Treatment focuses on promoting bone healing and may include immobilization with a cast or boot, bone stimulation devices, or surgical intervention (e.g., bone grafting or internal fixation) to stabilize the fracture. Physical therapy may be recommended to restore strength and mobility once healing progresses.

Prognosis and Follow-Up

Prognosis depends on the severity of nonunion and response to treatment. With proper management, many fractures eventually heal, but some may require long-term monitoring. Follow-up visits are essential to assess healing and adjust treatment plans as needed.

Complications

• Chronic pain or discomfort
• Increased risk of re-injury
• Potential for arthritis in the affected joint
• Need for additional surgery if nonunion persists
• Delayed return to normal activities

Lifestyle & Prevention

• Wear supportive footwear to reduce stress on the foot
• Avoid high-impact activities until cleared by a healthcare provider
• Maintain a healthy diet rich in calcium and vitamin D to support bone health
• Gradually resume activity under medical guidance to prevent re-injury
• Address underlying conditions (e.g., osteoporosis) that may impair healing

When to Seek Professional Help

Seek medical attention if pain worsens, swelling increases, or you experience difficulty walking. Prompt evaluation is important if you notice signs of infection (e.g., redness, warmth, or drainage) at the fracture site.

Tips for Medical Coders

Document the encounter as a subsequent visit for fracture with nonunion, ensuring the code S92.354K is used. Include details about the fracture's status (nondisplaced, nonunion) and any treatments provided. Verify that the encounter is not the initial visit for the injury to avoid incorrect code assignment.