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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 External link, opens in new window: 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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Search CIHI’s repository of answers on coding and classification topics, or submit a question.

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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
COVID-19: How can clinicians help ensure that data supports monitoring?

This infographic provides clinicians with a brief guideline about documenting COVID-19 (coronavirus) cases.

ICD-10-CA Coding Direction for COVID-19: Frequently Asked Questions

Frequently asked questions about ICD-10-CA coding direction for COVID-19. Accompanies the webinar ICD-10-CA Coding Direction for COVID-19.

Next version year for DAD and NACRS products postponed A list of CIHI’s products that are postponed until 2022–2023: Canadian Coding Standards, classifications (ICD-10-CA and CCI), DAD and NACRS abstracting manuals, and case-mix products. DAD , NACRS
Opioid Overdose Coding Direction This bulletin provides coding and abstracting direction to ensure accurate and quality data collection strictly related to opioid overdose.
Webinar: ICD-10-CA Coding Direction for COVID-19

Watch the webinar ICD-10-CA Coding Direction for COVID-19 or read the transcript.

ICD-10-CA Coding Direction for COVID-19 in Obstetrics, and Updates on the Use of COVID-19 Laboratory Test Results

This bulletin (April 30, 2020) provides coding direction for pregnancy/obstetrical cases where COVID-19 is confirmed/suspected, plus an update on the use of COVID-19 laboratory results.

Guidelines to Support Capturing Cases of Opioid Overdose (Poisoning)

Clinical documentation requirements for capturing opioid overdose cases.

Tip for Coders: Using the Anatomical Therapeutic Chemical Classification to Select the Correct CCI Pharmacological Agent

This Tip for Coders clarifies how to find the correct CCI pharmacological agent when the specific CCI pharmacological agent is not found in the classification.

ICD-10-CA Coding Direction for Suspected COVID-19 Cases

This bulletin (March 30, 2020) provides new coding direction for assigning an ICD-10-CA code for suspected cases of COVID-19 (coronavirus).

ICD-10-CA Coding Direction for Confirmed COVID-19 Cases

This bulletin presents the new coding direction for assigning an ICD-10-CA code when there is documentation of a confirmed infection due to novel coronavirus (COVID-19).

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.

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.