C34423 C Bipolar Disorder Bipolar Disorder A disorder of the brain that causes unusual shifts in mood, energy, activity levels and the ability to carry out day-to-day tasks. Often these moods range and shift from periods of elation and energized behavior to those of hopelessness and depression. C2893 Psychiatric Disorder C97150 Neurological Development Terminology C35126 C Vision Disorder Vision Disorder Disorder of Visual System|Visual System Disorder Any impairment to the vision. C63711 Sensory Disorder C97150 Neurological Development Terminology