Welcome to the board. Never heard of Geodon. I looked it up. It is for BP.
ADHD can mimic bipolar and visa-versa. But they are two very different disorders. They can co-exist, that is, one person can be afflicted by both. Some ADHD meds can worsen BP and BP can worsen ADHD symptoms. In that scenario Geodon can help with ADHD symptoms by controlling the BP.
Hope that was of some help.