When the DSM-5 was published in 2013, it did not include Prolonged Grief Disorder as a diagnosable mental disorder. Instead, it was referred to as Persistent Complex Bereavement Disorder in the appendix and noted that it was in need of further study. After much debate, it was finally added to the DSM-5 TR in 2022. Despite its inclusion in the DSM, there is still much debate about whether or not it should be included.