CMS opposes adding unique device identifiers (UDIs) to insurance claims forms because it would entail significant technological and financial challenges. Inserting UDIs could cost over $700 million to implement due to necessary changes to claims processing systems across the healthcare industry. It may also result in inaccurate data on claims forms if UDIs are entered incorrectly. While CMS supports including UDIs in electronic health records and registries, it believes alternative methods like clinical registries could gather useful post-market information without burdening providers and payers. Key standards groups also have concerns about mandating UDIs on claims forms at this time.