ELI5: Explain Like I'm 5

International Statistical Classification of Diseases and Related Health Problems

The International Statistical Classification of Diseases and Related Health Problems, also known as ICD, is a big book filled with lots of information about different types of sickness and health problems that people can have.

Imagine the ICD book like a big toy box filled with many different toys. Each toy represents a different type of sickness or health problem that people may have. The toy box is divided into different sections, just like the book is divided into different chapters, each chapter talks about a specific type of health problem.

Now, imagine that you are a doctor or a nurse examining a patient who is not feeling well. You would use this big toy box or the ICD book, to help you figure out what is making your patient sick. You would choose a toy that you think matches with the sickness your patient has, and this means you would look up in the ICD book using special codes for that toy. This code can help you identify and record the patient’s condition, which is very important to ensure proper treatment is given.

Same way, doctors and nurses all over the world use the ICD book to help them identify and classify different health problems that people may have, regardless of where they live. This helps them share information about different diseases and health problems, and it makes it easier to develop new tools and treatments to fight these diseases.