Updates the data definitions recommended for use in Australian health data collections. Use of the Dictionary will help to ensure that the data are uniform and of high quality. The format for data definitions continues to be based on the international standard for defining data elements issued by the International Organization for Standardization. Version 7 features a new way of organising the data definitions that integrates the definitions with The National Health Information Model. The Dictionary is also available in electronic form via the National Health Information Knowledgebase at the Institute's Internet home page.