Q70.13 Webbed fingers, bilateral

Name of the Condition

• Webbed fingers, bilateral

Summary

Webbed fingers, bilateral is a congenital condition where two or more fingers on both hands are connected by skin or soft tissue. This form of syndactyly is present at birth and may involve partial or complete fusion of the digits. The extent of webbing can range from a thin membrane to extensive tissue joining, potentially affecting function and appearance.

Causes

Webbed fingers result from genetic factors that disrupt normal finger separation during fetal development. The condition occurs when the fingers fail to fully separate, a process that typically completes by the eighth week of gestation. It may 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 genetic syndromes that include limb malformations.

Symptoms

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

Diagnosis

Diagnosis is made through physical examination to assess the extent of fusion. Imaging studies, such as X-rays, may be used to evaluate bone involvement and guide treatment planning.

Treatment Options

Treatment may include surgical separation of the fused digits to improve function and appearance. The timing and approach depend on the severity of the condition and the impact on the patient's daily activities. Postoperative care often involves physical therapy to restore mobility.

Prognosis and Follow-Up

Prognosis is generally favorable with appropriate treatment, though outcomes depend on the extent of fusion and associated conditions. Regular follow-up may be necessary to monitor healing and functional recovery, especially in cases involving bone involvement.

Complications

Potential complications include limited hand function, cosmetic concerns, and recurrence of webbing after surgery. In severe cases, associated syndromes may lead to additional health issues requiring multidisciplinary care.

Lifestyle & Prevention

While prevention is not possible due to genetic origins, early intervention can minimize functional limitations. Adaptive devices or occupational therapy may assist with daily tasks during recovery.

When to Seek Professional Help

Consult a healthcare provider if webbing affects hand function, causes pain, or is associated with other physical abnormalities. Early evaluation is recommended for infants with visible syndactyly.

Tips for Medical Coders

Document the bilateral nature of the webbing and any associated syndromes or complications. Ensure clinical notes specify the extent of fusion (e.g., soft tissue vs. bony) to support accurate coding. Use Q70.13 for bilateral webbed fingers without additional digits specified.