Dansk Branchekode DB07, v2:2013
The only difference is the subdivision of some classes, e.g. 64.20.10 indicates that NACE Rev. 2 class 64.20 has been subdivided whereas 38.31.00 indicates that class 38.31 has not been subdivided.
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/db07?id=4222ca4f-2d4b-4725-b9f2-a944f8f3e750