HA (Home Automation) profile is built/designed on top of Zigbee Pro Stack (Zigbee 2007 feature set). So, though they are having similarities, they are not compatible with each other.
Currently, Digi's only one module i.e. "XBee Pro S2C" is HA ready. By "HA ready" means, it can join a HA network and will forward all incoming HA related request frames out on its UART. It will not process them (then it will be HA Compatible & not HA ready). User have to put a micro-controller to handle those requests.