I did some more checking and found out that UDD (unspecified dissociative disorder) is when someone has dissociative symptoms but they do .....not .....fit any specified dissociative disorder ie DID, Depersonalization/derealization/ Other Specified Dissociative Disorder (converstion disorder, ganser syndrome, ...)

for example if you have converstion type dissociative disorder then the label OSDD (other Specified Dissociative Disorder)

if you have numbness, a sense of unconnected ness, but not to the severity of meeting the DID/ depersonalization/derealization disorder/conversion/ganser syndrome diagnostics then UDD (unspecified dissociative disorder ) applies.

in other words anything that does not meet any dissociative disorder is now called UDD.