Laundry Prints Is It Code To Have A Drain In Your 2nd Floor Laundry Room? If So, Can Some One Send Me The Info? ?

Is it code to have a drain in your 2nd floor laundry room? If so, can some one send me the info? ? - laundry prints

I just bought a new house, and I realized that small floor drain in the 2nd Floor laundry room. Someone I know who saw the blue I was in the design and code. I researched and can find nothing. Please help!