Draw all possible diagrams for Hospital Management System

As an AI language model, I cannot draw diagrams. However, I can describe some of the diagrams that could be included in a Hospital Management System. Here are a few examples:

1. Use Case Diagram: This diagram shows the various actors and use cases involved in a Hospital Management System. Actors could include patients, doctors, nurses, and administrators, while use cases could include scheduling appointments, managing patient records, updating medical histories, and processing billing information.

2. Class Diagram: This diagram shows the various classes and their relationships in a Hospital Management System. Classes could include patients, doctors, nurses, medical records, billing, and scheduling.

3. Sequence Diagram: This diagram shows the sequence of events that occur when a user interacts with a Hospital Management System. For example, it could show the steps involved in scheduling an appointment or updating a patient's medical record.

4. Activity Diagram: This diagram shows the various activities involved in a Hospital Management System, including the different states and conditions that can occur. For example, it could show the steps involved in admitting a patient or discharging them from the hospital.

5. State Diagram: This diagram shows the different states that a Hospital Management System can be in, such as when it is running, in standby mode, or undergoing maintenance. It can also show the different states that patients, doctors, or nurses can be in, such as when they are on-call or on vacation.