If your referring to a mini-split AC system, all of the systems I have seen for probably the last 15-years get power for the indoor evaporator blower and controls from the terminal board in the outdoor condenser.
When you pull the disconnect for the outdoor unit, you also kill power to the indoor unit. I would say that unless you see a requirement for a separate disconnecting means for the indoor unit in the manufactures listed instructions for that particular equipment, you shouldn't need one.
