Q70.33 Webbed toes, bilateral

Name of the Condition

• Webbed toes, bilateral

Summary

Webbed toes, bilateral is a congenital condition where two or more toes on both feet are connected by skin or soft tissue. The fusion may range from a simple webbing of skin to more extensive tissue joining, and the severity can vary. This condition is present at birth and affects both feet, with the extent of webbing potentially differing between the left and right sides.

Causes

Webbed toes, bilateral primarily results from genetic factors that disrupt normal limb development during fetal growth. The condition occurs when the toes fail to separate properly, a process that typically completes by the eighth week of gestation. It can occur as an isolated anomaly or as part of a genetic syndrome, such as Apert syndrome or Poland syndrome.

Risk Factors

• Family history of syndactyly or related genetic conditions.
• Association with certain genetic syndromes that include limb malformations as a feature.

Symptoms

• Fusion of skin between adjacent toes on both feet.
• Reduced range of motion and dexterity in the affected digits.
• Potential functional impairment, particularly in tasks requiring fine motor skills.

Diagnosis

Diagnosis is typically made through physical examination, which assesses the extent of webbing on both feet. Imaging studies, such as X-rays, may be used to evaluate bone involvement and guide treatment planning.

Treatment Options

• Surgical separation: Typically performed to improve function and appearance, with timing dependent on severity and functional impact.
• Physical therapy: May be recommended to enhance mobility and strength in the affected toes.

Prognosis and Follow-Up

Prognosis is generally good, especially if the condition is isolated and not associated with other syndromes. Follow-up may involve monitoring for functional changes or complications, with surgical outcomes often improving appearance and mobility.

Complications

• Reduced dexterity or difficulty with footwear.
• Potential for associated syndromic conditions if part of a broader genetic disorder.

Lifestyle & Prevention

No specific preventive measures exist, as the condition is congenital. Supportive footwear or adaptive devices may help manage functional challenges.

When to Seek Professional Help

Consult a healthcare provider if webbing affects daily activities, causes pain, or is accompanied by other physical anomalies.

Tips for Medical Coders

Document the bilateral nature of the webbed toes and any associated syndromic features. Ensure clinical notes specify the extent of webbing and whether bone involvement is present to support accurate coding.