Longitudinal reduction defect of femur, bilateral

This code describes a congenital malformation characterized by the partial or complete absence of the femur bone in both legs. It is a type of limb reduction defect affecting the longitudinal development of the thigh bone, leading to shortened or absent femurs bilaterally.

Use this code for patients diagnosed with a congenital absence or significant shortening of both femurs due to a developmental anomaly. Documentation should clearly state "longitudinal reduction defect of femur" and specify "bilateral" involvement, often identified at birth or during prenatal imaging.

• Ensure documentation explicitly states "bilateral" involvement; separate codes exist for unilateral defects.
• Do not confuse with acquired conditions or other types of limb deformities.
• Consider sequencing this code as the primary diagnosis when it is the main reason for the encounter, especially for initial evaluations or surgical planning.