Release Notes for IMDRF Terminology Release Number 2023. Release Number 2023 incorporates the Change Requests received for the 2022 maintenance cycle. Overview of changes: Annex A: Added 4 new terms (A2501,A0514,A050408,A0723), modified 4 terms (A050405, A07,A14,A1412) and retired 1 term (A071205). Annex B: Added 1 new term (B25) and modified 3 terms (B15,B16,B24). Annex C: Added 6 new terms (C0109,C0210,C0708,C2301,C2302,C24) and modified 2 terms (C1302,C160504). Annex D: Added 2 new terms (D20,D21). Annex E: Added 19 new terms (E0209,E0520,E0624,E0625,E0626,E0627,E0854,E0855,E0856,E0857,E1212,E1312,E1313,E1314,E1419,E1420,E1727,E2124,E2343) and modified 13 terms (E040202,E0607,E0824,E0827 E0845,E090801,E090802,E120501,E1308,E2012,E2302,E2322,E2401) Annex F: Added 1 new term (F2307) and modified 5 terms (F11,F19,F1907,F2202,F24). Annex G: Added 4 new terms (G0200804,G03014,G03015,G03016) and modified 2 terms (G0200401,G04097). For a complete list of comments and IMDRF decisions, please refer to the Change Log published along with this release. The deadline for Change Requests for next year's maintenance cycle is 1 September 2023. For questions on this release, please contact IMDRF AE WG Chair at HSA_MDC@hsa.gov.sg.