BackgroundAdverse events (AEs) during health care are common and may have long‐term consequences for patients. Although there is a tradition of reviewing morbidity and mortality in gynaecology, there is no recommended system for reporting contributory factors and potential avoidability.AimsTo identify factors that contributed to AEs in the gynaecology service at National Women's Health at Auckland District Health Board and to determine potential avoidability, with the use of a multidisciplinary morbidity review.Materials and MethodsContributory factors from a review of AEs in gynaecology services were identified and classified as organisational and/or management factors, personnel factors and barriers to patients accessing and engaging with care. Potential avoidability of the AE was also considered. A descriptive analysis of the morbidity review of patients who had an AE from 2019 to 2022 was undertaken.ResultsOne hundred and fifty‐three cases of AEs were reviewed and 77 (50.3%) were associated with contributory factors. Of all cases, 45 (29.4%) had organisational factors, 54 (35.3%) had personnel factors and patient factors resulting in barriers to care contributing to 11 (7.2%) cases. Sixty‐five cases (42.5%) were classified as potentially avoidable. Of these 65 cases, 38 (58.5%) had organisational factors, 48 (73.8%) had personnel factors and nine (13.9%) had barriers to care.ConclusionsThe AE review process reported 50.3% of AEs had contributory factors that were classified as organisational, personnel and barriers to patients accessing care and that 42.5% of the AEs were potentially avoidable. These reviews can be used for making recommendations that potentially lead to improvements in gynaecology.