NHS England and NHS Improvement (NHSE/I) published the Integrated Care System (ICS) Design Framework on 16th June 2021. This briefing sets out the operating model for ICSs from April 2022, after the enactment of the Health and Care Bill which will place ICSs on a statutory footing. It also acts as interim guidance for how ICSs need to continue developing and preparing for new statutory arrangements over the next ten months. The design framework will be supplemented by further information and guidance later this year to support detailed planning.