In this case "official" appears to mean that Microsoft has added some Pi-specific instructions on how to get the code wrangler up and running on the diminutive computer under Raspberry Pi OS (formerly known as Raspbian). In this case a simple
sudo apt install code should do the trick after the usual
sudo apt update.
The code, in 32-bit and 64-bit variants, had already turned up in the Raspberry Pi OS APT repository a few weeks ago and generated a fair bit of controversy as some users worried about open source and transparency as Microsoft-signed keys turned up.
Others were just happy to see the arrival of Visual Studio Code, although it can be a bit of a beast on the memory front (we're not sure we'd want to use it on a Pi without plenty of RAM).