Medicare Reimbursement for Hydrus Microstent

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Topic: Aqueous Drainage Device

Sponsor: Ivantis

Updated: 01/14/2022

This FAQ addresses the following:

What is the Ivantis Hydrus® Microstent?
What are the indications for the Hydrus Microstent?
Do Medicare and other payers cover implantation of the Hydrus Microstent?
Is there reimbursement for stand-alone Hydrus implantation without cataract surgery?
What CPT code describes implantation of the Hydrus?
What does Medicare allow for these procedures?
Is there separate Part B Medicare reimbursement for the Hydrus Microstent device?
Are there NCCI edits for CPT 66989 and 66991?
May gonioscopy (92020) be billed with the claim for the surgery?
What is the global period for 66989 and 66991?

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The reimbursement information is provided by Corcoran Consulting Group based on publicly available information from CMS, the AMA, and other sources. The reader is strongly encouraged to review federal and state laws, regulations, code sets, and official instructions promulgated by Medicare and other payers. This document is not an official source nor is it a complete guide on reimbursement. Although we believe this information is accurate at the time of publication, the reader is reminded that this information, including references and hyperlinks, changes over time, and may be incorrect at any time following publication.

© 2026 Corcoran Consulting Group. A Subsidiary of Medical Consulting Group, LLC. All rights reserved. No part of this publication may be reproduced or distributed in any form or by any means, or stored in a retrieval system, without the written permission of the publisher. CPT is a registered trademark of the American Medical Association.