Australians with a psychosocial disability (PSD) and a National Disability Insurance Scheme (NDIS) plan may at times require emergency care due to the fluctuating nature of their physical and mental health conditions or when their supports have become insufficient. This nationwide study investigated the experiences of people presenting to an emergency department (ED) who have a PSD and an NDIS plan. The objective was to understand current care and communication practices and to provide recommendations for service integration. Twenty-four interviews were conducted with people who had a PSD and an NDIS plan. Participants were asked semi-structured questions about their experiences when engaging with NDIS processes and when engaging with the ED as an NDIS recipient and how communication practices could be improved between the two services. A qualitative, descriptive thematic analysis approach was used. A lived experience advisory group participated in the research and provided commentary. The findings of this study indicate that the NDIS, as a personalised budget scheme, presents challenges for people with complex PSD and physical needs. ED clinicians appear to be unclear about what the NDIS provides and communication between the two systems is fragmented and inconsistent. The themes identified from the analysed transcripts are: (a) People with PSD experience distress when dealing with the NDIS; (b) There's a blame game between the ED and the NDIS; and (c) Inadequate service integration between the ED and NDIS. Recommendations to assist with service integration include building service capacity, providing overlapping care and bridging the diverse biomedical, psychosocial and disability care services.