Q70.1 Webbed fingers

Name of the Condition

• Webbed fingers

Summary

Webbed fingers, a form of syndactyly, is a congenital condition where two or more fingers are connected by skin or soft tissue. The fusion may involve partial or complete webbing, and the severity can range from a thin membrane to extensive tissue joining. This condition is present at birth and may affect one or multiple digits, either unilaterally or bilaterally.

Causes

Webbed fingers primarily result from genetic factors that disrupt normal limb development during fetal growth. The condition occurs when the fingers 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 fingers.
• 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. Imaging studies, such as X-rays, may be used to evaluate bone involvement and guide treatment planning.

Treatment Options

• Surgical separation: Typically recommended to improve function and appearance.
  • The surgery is usually performed before school age to optimize outcomes.

Prognosis and Follow-Up

Prognosis is generally good with appropriate surgical intervention. Follow-up care may include physical therapy to restore mobility and function. Long-term monitoring may be necessary to address any residual issues or complications.

Complications

• Limited hand function if untreated.
• Potential for psychological or social challenges due to appearance.
• Risk of complications from surgery, such as infection or scarring.

Lifestyle & Prevention

No specific prevention methods exist, as the condition is congenital. Early intervention and support can help manage functional and social impacts.

When to Seek Professional Help

Consult a healthcare provider if webbed fingers are noticed at birth or if there are concerns about hand function or development.

Tips for Medical Coders

Document the extent of webbing (e.g., soft tissue only, bone involvement) and whether the condition is isolated or part of a syndrome. Ensure the code Q70.1 is used for webbed fingers, and include details about affected digits or laterality if specified.