Rat Game:
when the fax machine screen comes up type in: 7287 on the keypad and click the send button on the machine. When you complete the level, you will be taken to a rat game.

Extra $10,000:
Press L1, and Select Together Then Triangle, Circle, Triangle, X, Square.

Neat and Tidy:
If your hospital becomes full of patients litter, save the game and reload it and your hospital will be as good as new.

Level Codes
2 = X, Circle, Square, Triangle, Triangle, Circle, Square, X.
3 = Circle, Circle, Triangle, Square, X, Triangle, Circle, Triangle.
4 = Square, Triangle, Circle, Square, X, X, Triangle, Circle.
5 = Circle, Triangle, Square, Circle, X, Triangle, Circle, Square.
6 = Square, Triangle, Square, Circle, X, Square, X, Circle.
7 = Square, Triangle, Triangle, Circle, X, Square, Triangle, Circle.
8 = X, Triangle, Square, Circle, Triangle, Circle, Square, X.
9 = Triangle, Square, X, Triangle, Circle, X, Triangle, Square.
10=Circle ,Square , X, Triangle, Square, X, Circle, Square.
11=Triangle, Circle, Square, Circle, Triangle, Square, Circle, X.
12=Circle, Square, X, X, Square, Circle, Square, Triangle.