The paired lumbar veins are ligated and transected. After the entire inferior vena cava has been freed, vascular clamps are applied immediately below the renal veins and at the junction of the iliac veins. The inferior vena cava is transected as far distad as possible and the caudal stump ligated. The right iliacvein may be left attached to the vena cava to achieve greater length. ICD 10 Coding.is very useful service as it will help in the collections and also for the amount that is pending from the payers and patients