There is no data on the proportion of people with dementia in NZ who have received a diagnostic assessment due to limitations posed by the “diagnosis gap” as a result of those who have dementia but do not interact with health/social services, those who have dementia diagnosed but not recorded, and those who have cognitive impairment but may not receive a dementia related diagnosis. Furthermore, primary care diagnosis coding is not consistent and outpatient clinic diagnoses are not routinely coded.