Health care procedure coding is a way for doctors and hospitals to make sure everyone is on the same page when talking about a person's health care. It's like a secret code - there are numbers and words associated with each illness, injury, or medical procedure. For example, if you broke your arm, the doctor might give you the code S85.54. That code tells your health insurance company that you broke your arm and need to be covered. The coding system also makes sure all doctors around the world know that same code when they see you, so they understand what kind of care you need.