<<<None of which, of course, sheds light on the origin of this particular usage of "indicated." I would contrive it to mean that among all the choices available, this one can be designated as an appropriate one.>>>

'Zactly!!! its good shorthand for a concept which you probly need to express several times a day and which all peers and colleagues well understand, but which it takes some effort to define with precision, particularly to lay people, and has no direct lay translation (eg. femur for thigh bone). Seems to me that that is the essence of "jargon" and illustrates the need for it within professions and occupations. Are there any other examples medical and nonmedical? I guess a clear example from my area is a term like "trustee".