Fused toes, bilateral

This code signifies a congenital anomaly where two or more toes are abnormally joined together on both feet. This fusion can involve soft tissue, bone, or both, resulting in a single, malformed digit or digits. It is a birth defect affecting the development of the foot.

Apply this code when documentation explicitly states "fused toes, bilateral" or "syndactyly of toes, bilateral." This diagnosis is typically made at birth or early childhood during physical examination. Supporting documentation would include physician notes detailing the bilateral nature of the toe fusion.

• Ensure documentation specifies "bilateral" involvement; otherwise, a unilateral code (Q70.21 or Q70.22) or unspecified code (Q70.20) would be more appropriate.
• Distinguish from polydactyly (supernumerary digits) or other congenital malformations of the foot.
• Code any associated congenital anomalies of the foot or other body systems separately.