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CIHI sets the national standard for morbidity data reporting in Canada and maintains, distributes and supports the application of ICD-10-CA (the Canadian modification of ICD-10). CCI is the national standard for classifying health care procedures. Statistics Canada supports the mortality application of ICD-10.

ICD-10-CA (International Statistical Classification of Diseases and Related Health Problems, 10th Revision, Canada) was developed by the World Health Organization (WHO) and enhanced by CIHI to meet Canadian morbidity data needs. ICD-10-CA classifies diseases, injuries and causes of death, as well as external causes of injury and poisoning. It also includes conditions and situations that are not diseases but represent risk factors to health, such as occupational and environmental factors, lifestyle and psychosocial circumstances.

CCI  (Canadian Classification of Health Interventions) was developed by CIHI to accompany ICD-10-CA. It was designed to be service-provider and service-setting neutral and can be used comprehensively throughout Canada’s health systems. CCI classifies a broad range of interventions including therapeutic and diagnostic interventions and other health care interventions, such as assistance with activities of daily living, environmental assessments and counselling.

Other WHO classifications

ICD-11: The WHO is currently developing the 11th revision of the International Classification of Diseases. It is anticipated that ICD-11 will be released by the WHO in June 2018. See Canada’s involvement. 

ICF: The International Classification of Functioning, Disability and Health, developed by the WHO, is a classification of health and health-related domains that describe body functions and structures, activities and participation, and environmental factors. 

Make a request for enhancements, additions or changes to ICD-10-CA and/or CCI.



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Explore practical resources that your health care organization can use when implementing an interRAI assessment system.

Version 2018 ICD-10-CA and CCI

Access information about the 2018 version, including download instructions and frequently asked questions.

Classification Resources

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Title Description Data Holdings
What’s the Best Way to Search ICD-10-CA/CCI?

This video shows users how to search in Folio for ICD-10-CA and CCI codes.

Coding Standards Amendment Requests for v2021

Take a look at a list of proposed amendments to the Canadian Coding Standards for ICD-10-CA and CCI received (as of November 2019), which are identified by chapter and coding standard. 

Classifications and Terminologies Newsletter, December 2019

Get news on Classifications and Terminologies activities, upcoming education courses, coding questions, topical data quality initiatives and more. 

Classifications and Terminologies e-Newsletter, June 2018

Get news about the release of version 2018 ICD-10-CA/CCI and the Canadian Coding Standards, coding questions updates and more.

Classifications and Terminologies e-Newsletter, December 2017

Get news about changes to education offerings and the release of version 2018 ICD-10-CA/CCI and the Canadian Coding Standards.

Vaping-Related Disorders

This bulletin highlights the new coding direction for assigning an ICD-10-CA code for vaping-related disorders.

Tip for Coders — Z-Codes: What’s the Difference?

The purpose of this Tip for Coders is to clarify which Z-code is appropriate to assign in certain circumstances. 

Webinar: In the Spotlight — Contributing to Quality Data: A Coder's Role

View the webinar or read the transcript. Learn about the input, output, outcomes and impact of coded ICD-10-CA/CCI data and how it is used by internal and external stakeholders. 

Webinar: Optimizing Your eQuery Coding Questions

Watch the webinar Optimizing Your eQuery Coding Questions, or read the transcript.

Webinar: Introduction to ICD-11 — Part 2

View the webinar Introduction to ICD-11 — Part 2 or read the transcript. This webinar highlights the main differences between ICD-10-CA and ICD-11. 

Webinar: Introduction to ICD-11 — Part 1

View the webinar ICD-11: Part 1 or read the transcript. The webinar introduces the International Classification of Diseases 11th Revision (ICD-11) and demonstrates the ICD-11 classification.

Classifications and Terminologies Newsletter, June 2019

The 11th edition of our newsletter promotes Classifications and Terminologies activities, upcoming education courses, coding questions, topical data quality initiatives and more.

Tips for Coders: Failed Induction of Labor

The purpose of this Tip for Coders is to clarify when a case qualifies as failed induction of labor and is classified to a code from category O61 Failed induction of labour.

ICD-10-CA and CCI Enhancement Requests for v2021

These enhancement requests, received as of February 5, 2019, are identified by rubric or code/category title. CIHI's decisions and rationale following review of these requests are provided.

Webinar: Opioid Overdose

Webinar recording about opioid overdose coding.

Tips for Coders: Optional Versus Mandatory CCI Attributes

The purpose of this Tip for Coders is to provide guidance for consistent data collection of Canadian Classification of Health Interventions (CCI) attributes. Data is reliable and valid for use only when it is captured consistently by all coders.

Post-Intervention Conditions Coding Activity Sheet: Who Am I?

Classifications and Terminologies' "Who Am I?" activity sheet tests coders' knowledge of post-intervention conditions coding. 

Education Roadmap: Reach Your GOAL With Classifications, DAD, NACRS, and Case Mix

This educational roadmap provides the resources to help current users of ICD‑10‑CA/CCI to enhance their skill sets and knowledge relating to coding and classification.

Public Submission Guidelines for Updating ICD-10-CA and CCI

CIHI has established this public submission process to enhance accessibility to the updating process by all who are involved or interested in Canadian health care data.

Now available: Updated version 2018 ICD-10-CA/CCI

Get information on the technical issues that have been resolved in version 2018 of ICD-10-CA/CCI, as well as new licensing requirements for Core Plan clients.