Longitudinal reduction defect of radius, bilateral

This code describes a congenital malformation characterized by the partial or complete absence of the radius bone in both forearms. This defect results in a shortened or absent thumb and often involves other anomalies of the hand and wrist, such as radial clubhand. It is a birth defect affecting the development of the upper limbs.

Use this code for patients diagnosed with a bilateral absence or significant underdevelopment of the radius. Documentation should clearly state the bilateral nature of the defect, often identified through prenatal imaging or at birth. This code is appropriate for initial diagnosis and subsequent encounters related to the management of this congenital anomaly.

• Ensure documentation explicitly states "bilateral" to support the use of this specific code.
• Consider co-occurring congenital anomalies, such as those of the thumb or hand, and code them separately if present.
• Distinguish from unilateral radial reduction defects, which would be coded differently based on laterality.