Print this Page


The International Statistical Classification of Diseases and Related Health Problems, 10th Revision (ICD-10) is an international standard for reporting clinical diagnoses developed by the World Health Organization. More Benefits.

ICD-10-CA is an enhanced version of ICD-10 developed by CIHI for morbidity classification in Canada. See the Canadian Enhancement to ICD-10 (PDF) 811 KB Statistics Canada is responsible for the mortality applications of ICD-10 as produced by WHO. The companion classification to ICD-10-CA for coding procedures in Canada is CCI. ICD-10-CA replaces ICD-9 and ICD-9-CM in Canada. See implementation status.


ICD-10-CA classifies diseases, injuries and causes of death, as well as external causes of injury and poisoning. The classification has 23 chapters with alpha-numeric categories and subcategories. Unlike ICD-9, ICD-10-CA applies beyond acute hospital care. ICD-10-CA also includes conditions and situations that are not diseases but represent risk factors to health, such as occupational and environmental factors, lifestyle and psycho-social circumstances.

Benefits of new version

ICD-10-CA represents the broadest scope of any previous ICD revision to date. ICD-10-CA is more comprehensive and specific than current standards and extends well beyond the traditional causes of death and hospital admission. ICD-10-CA is also more adaptable than previous versions, allowing for the addition of codes as new diseases are discovered. Both CIHI and Statistics Canada are represented on the Update and Revision Committee, a sub-committee of the WHO Family of International Classifications. Canada fully participates in the updating process with input into the decisions for both mortality and morbidity data collection.

Coding Structure

Information systems in Canada currently used to collect and store ICD-9 and/or ICD-9-CM diagnostic codes will need to be modified to accommodate the new coding structure for ICD-10-CA.

Support and Training

CIHI is responsible for support and training for morbidity applications of ICD-10.

Public Submissions for Enhancements to ICD-10-CA and CCI

CIHI has opened a public submission process to allow users of the classifications and the health data they provide an opportunity for input in the maintenance and enhancement cycle. The Public Submission Guidelines provide an in-depth explanation of the process, and list the required criteria for completion of the Submission Request Form.


Contact CIHI

Terms of Use © CIHI 1996–2014