Docking Limbs Versus Extensions In EVAR: What’s the Difference?

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Question:

How do I know what an extension is and what’s part of the original EVAR device? I know one is separately billable and one is not.

Answer:

That is a great question! EVAR devices vary in configuration. Some have a main body and one “docking limb.” Others have a main body and two docking limbs. Some are unibody devices; i.e., all in one piece. Docking limbs are considered part of the main body of the endograft/EVAR device and are not separately reported. An extension is an extra piece of graft that further extends the area of the original device, either more distally, into the iliac, or proximally, above the device in the aorta. Physicians should be specific in their documentation to differentiate between placement of docking limbs and extensions to ensure accurate coding.

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