Are there any penalties for individuals or institutions that continue to use antecedent versions after 26 April 2017?

As of today there are no penalties planned for continued use after the deadline. Our intention is not to penalize people who have developed a level of dependence on or key usage of SNOMED CT’s “ancestors.” Instead, we have focused on providing support for migration because we believe all users are as committed to up to date and safe information requirements as we are. However, as continued use involves significant risk, in the case of extensive antecedent usage after 2017, SNOMED International would seek legal advice on how to proceed. Individual Member countries also have the right to apply penalties for continued usage of antecedent versions of SNOMED CT, so you are advised to contact your National Release Centre if you have any issues. Please see also, “Timeline for withdrawing the legacy codes from the SNOMED CT International Edition.”