S92.346S Nondisplaced fracture of fourth metatarsal bone, unspecified foot, sequela

Name of the Condition

• Nondisplaced fracture of fourth metatarsal bone, unspecified foot, sequela
• ICD-10 code: S92.346S

Summary

A sequela of a nondisplaced fracture of the fourth metatarsal bone refers to the residual effects or complications that persist after the initial injury has healed. This code is used when the condition is a late effect of the original fracture, such as chronic pain, deformity, or functional impairment. The fracture itself involves a break in the long bone of the forefoot where the bone fragments remained in their normal alignment during healing.

Causes

The sequela arises from the initial nondisplaced fracture of the fourth metatarsal bone, which may have been caused by direct trauma (e.g., falls, impacts) or repetitive stress (e.g., overuse in sports). The residual effects develop as a result of the healing process, tissue damage, or inadequate recovery.

Risk Factors

• History of prior foot fractures or injuries
• Inadequate initial treatment or rehabilitation
• Underlying conditions affecting bone healing (e.g., diabetes, poor circulation)
• Prolonged weight-bearing or activity before full recovery

Symptoms

• Chronic pain or discomfort in the outer midfoot area
• Persistent swelling or deformity of the affected bone
• Reduced range of motion or stiffness in the foot
• Difficulty with weight-bearing or walking
• Possible numbness or tingling if nerve involvement occurred

Diagnosis

A healthcare provider will evaluate the patient’s history of the original fracture and assess current symptoms, including pain, swelling, and functional limitations. Imaging studies, such as X-rays or MRIs, may be used to identify residual bone changes or soft tissue damage. The diagnosis confirms the condition as a sequela rather than an active fracture.

Treatment Options

Treatment focuses on managing symptoms and improving function. This may include physical therapy to restore mobility, orthotic devices for support, pain management, or corrective footwear. In some cases, surgical intervention may be considered for severe deformities or persistent pain.

Prognosis and Follow-Up

The prognosis depends on the extent of residual damage and adherence to treatment. Most patients experience improvement with appropriate care, though some may have long-term limitations. Regular follow-up appointments are recommended to monitor healing and adjust treatment as needed.

Complications

• Chronic pain or arthritis in the affected joint
• Persistent deformity or instability of the foot
• Nerve damage leading to numbness or weakness
• Reduced mobility or activity limitations

Lifestyle & Prevention

• Use supportive footwear to reduce stress on the foot
• Engage in gradual, low-impact exercises to maintain strength and flexibility
• Avoid high-impact activities until cleared by a healthcare provider
• Maintain a healthy weight to minimize foot strain

When to Seek Professional Help

Seek care if symptoms worsen, new pain or swelling develops, or functional limitations persist despite treatment. Immediate attention is needed for signs of infection, severe deformity, or inability to bear weight.

Tips for Medical Coders

This code is used for the sequela of a nondisplaced fourth metatarsal fracture. Document the relationship to the original injury, including the time elapsed since the fracture and any residual effects. Ensure the diagnosis aligns with the definition of a sequela (a condition resulting from a prior injury) and not an active fracture.