Define please

Hey all! I would like a clarification if you can. In 2000, I was diagnosed as Bipolar however this was a wrong diagnosis and due to very poor med management by a pdoc I was overdosed on several meds for bipolar. The result is Temporal Lobe Epilepsy which cannot be reversed. In January I went thru another way better assessment. This pdoc was an expert in mood disorders. So after 3 days of endless questions she came to a conclusion that I did NOT fit any major mood disorders. Her final diagnosis was Mood Disorder NOS. I've been researching and asking other pdocs as well as going thru the DSM-V for a definition. I'm bewildered to find nothing. So can anyone give me a clarification of Mood Disorder NOS?

Thanks