Final answer:
The codes for Alzheimer's disease with behavioral disturbance require two codes, and the order in which they are coded does not matter.
Step-by-step explanation:
According to the Alphabetic Index, the codes for Alzheimer's disease with behavioral disturbance require two codes, and it does not matter which one is coded first. Therefore, answer option 3) Two codes are required and it does not matter which one is coded first, is correct.