In order to minimise disruption at year-end, SNOMED CT will be deployed in phases across general practice from April 2018. The introduction of SNOMED CT, which replaces Read/CTV 3 Codes, is being co-ordinated in primary care by NHS Digital, working closely with clinical system suppliers to support a smooth transition. The first phase of deployment will start with approximately 20 pilot sites, including all of the principal clinical supplier systems, after year-end business activities are completed. GP Clinical system suppliers will inform GP practices of their deployment plans. For further information on progress, visit the NHS Digital website.