In the Medical Modal for Evaluations or Psychosocial Assessments, Therapists use an Axis format. Though Social Workers use a different format, Goal oriented format.
Axis I: The presiding or current problem
Axis II: personality Disorder
Axis III: General medical Condition (Dr fills this out)
Axis IV: Psychosocial and Environmental Factors contributing to disorder (divorce, death, moving from family home, etc)
Axis V: Social Function, i.e. able function on a daily level
Now, what I was attempting to say (DX is diagnosis by the way. Dx progress note lingo oooooops regress back to them old days)
On Axis II, the therapist/psychologist can have more than one Dx (shorthand) if it is warranted.
However, The Borderline personality Disorder (I don't know acronyms us old foggies didn't use them back "then") may be many. However, the Dx we very very smart Websleuthers know she is (whisper antisocial /psychopath) did not apply in the DT Direct testimony and/or was too prejudicial.
The other possible Dx's just didn't apply because it was not brought into evidence during Defense's Direct Case in Chief.
I hope this makes a bit more sense and less Progress note (ish). I apologize.