ICD is the foundation for the identification of health trends and statistics globally, and the international standard for reporting diseases and health conditions. It is the diagnostic classification standard for all clinical and research purposes. ICD defines the universe of diseases, disorders, injuries and other related health conditions, listed in a comprehensive, hierarchical fashion that allows for:
- easy storage, retrieval and analysis of health information for evidenced-based decision-making;
- sharing and comparing health information between hospitals, regions, settings and countries; and
- data comparisons in the same location across different time periods.
Uses include monitoring of the incidence and prevalence of diseases, observing reimbursements and resource allocation trends, and keeping track of safety and quality guidelines. They also include the counting of deaths as well as diseases, injuries, symptoms, reasons for encounter, factors that influence health status, and external causes of disease.
The Dewey Decimal Classification System was developed in order to make finding and classifying books within the library so much easier. Typically, there are hundreds of thousands of books within the library. And to make all of those books much easier to find. And to also make it easier for librarians to know where to place those books, the Dewey Decimal System was put in place. This kind of book organization system uses numbers from 000 to 999 to categorize the books into particular topics, so all of the shelves within most libraries have that kind of numbering.