Longitudinal reduction defect of right fibula

This code describes a congenital malformation characterized by the partial or complete absence of the fibula in the right lower limb, occurring along its long axis. This reduction defect can range from mild hypoplasia to complete aplasia of the bone, often accompanied by other limb anomalies. It represents a failure of normal embryonic development of the fibula.

Use this code for patients diagnosed with a congenital absence or significant underdevelopment of the right fibula. Documentation should clearly specify the laterality (right) and the nature of the defect as a longitudinal reduction. This diagnosis is typically made at birth or early childhood based on physical examination and imaging studies.

• Ensure documentation specifies "right" fibula; use Q72.62 for the left and Q72.63 for bilateral involvement.
• Distinguish from transverse reduction defects, which involve the entire limb segment.
• Code any associated anomalies of the foot or other limb structures separately.