SOLVED: Combination of help here to enter the Homekit code in the format of xxx-xx-xxx. This was not the solution though. The solution was to disconnect the Ikea hub from Homekit. I am assuming that it can only connect with one other system at a time. Once I removed it from Homekit, the Ikea DIRIGERA hub showed up immediately in HA.
Thanks again for those that helped with the number format.