Every 3 years, changes are applied to the Discharge Abstract Database (DAD) and to the National Ambulatory Care Reporting System (NACRS) database to meet emerging information needs identified by stakeholder requests and to improve the quality and utility of data collected. The Clinical Administrative Databases (CAD) team at the Canadian Institute for Health Information (CIHI) has prepared this document to highlight confirmed changes related to DAD and NACRS data collection for 2018–2019.

This document will enable clients to begin preparing for data collection and supporting system changes that take effect as of April 1, 2018. It does not include changes required to align with v2018 ICD-10-CA/CCI, changes in case mix (CMG+/CACS) or changes to reports from CIHI that will be available by fall 2017.