The numbers are from here:
https://www.health.govt.nz/covid-19-...hics#all-cases.
Towards the bottom,
Age and vaccination status of deaths within 28 days of being reported as a case.
It's "This person was a positive case, and then died". 600 of which were over 90. This is all cause deaths too. Test positive and get hit by a car? You're in here.
It's worth noting that of those deaths, COVID-19 was officially coded as the underlying cause in only 1123 of the 2497.