Inquest into the death of Kumanjayi Johnson

45y · Male·Environmental exposure and dehydration

A 45-year-old Aboriginal man with severe cognitive impairment (6.5-year-old equivalent English comprehension), traumatic brain injury, epilepsy and multiple medical conditions died from environmental exposure and dehydration after walking away from his supported independent living residence on 3 December 2022. Clinical lessons include: inadequate cultural safety and engagement with Aboriginal clients; failure to communicate critical risk information during emergency calls (000 calls not properly coded); absence of structured procedures for missing person reporting; poor coordination between disability service providers (LSS), behavioural support staff, and guardianship officers; lack of Aboriginal staff and cultural competency training; insufficient family communication and involvement despite extensive family support network. The death was preventable through better cultural engagement, improved communication protocols with emergency services, timely escalation of risk, and stronger family involvement in care planning.