Well as an aside, I think the body and mind are a single system.Okay, but realize what you are saying -- your body is who you are, your mind just an adjunct, which, if it doesn't fit, must be wrong. Consider the implications of that.
Sometimes a body part has an issue. sometimes a mind has an issue. They're still parts of the same system.
So generally there are physical disorders and mental disorders.
But from what I can gather on this thread trans is a thing that frequently requires a lot of professional intervention, but it's also somehow uncategorizable.