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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. 

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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
Version 2018 ICD-10-CA/CCI, Canadian Coding Standards and related products

Get information on version 2018 ICD-10-CA/CCI Folio application, the Canadian Coding Standards and related products. 

Guidelines to Support Capturing Cases of Opioid Overdose (Poisoning)

Clinical documentation requirements for capturing opioid overdose cases.

Zika Virus

Confirmed cases of the Zika virus should be classified using the following code:

Classifications and Terminologies Newsletter

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

Opioid Overdose Coding Direction

This bulletin provides coding and abstracting direction to ensure accurate and quality data collection strictly related to opioid overdose.

Version 2018 ICD-10-CA/CCI: How Will You Prepare?

Education available to support the transition from v2015 to v2018 ICD-10-CA/CCI.

Tips for Coders: Infections: Interpretation of This Versus

The results of a recent reabstraction study and subsequent data quality reviews have revealed some discrepancies with the coding of infections. 

Tips for Coders: Diagnosis Typing for the Delivery Episode of Care

Application of diagnosis types for the delivery episode of care.

Classifications and Terminologies Newsletter December 2016

The sixth edition of CIHI’s Classifications and Terminologies newsletter promotes current activities, upcoming education courses, coding questions, topical data quality initiatives and more!

Classifications and Terminologies Newsletter June 2017

Get news about coding and abstracting direction for medical assistance in dying (MAID), field trials for ICD-11 and more.

Errata for v2015 ICD-10-CA/CCI With CIHI Publish Shadow Files

These CIHI Publish Shadow Files have CIHI notes showing the errata in the classifications that have been identified since the classifications were posted on the Classifications and Coding web page in February 2015.

MAID: Coding and Abstracting

Interim coding and abstracting direction for Medical Assistance in Dying (MAID) cases is provided for 2016–2017 and 2017–2018. Resubmission of relevant records for 2016–2017 is recommended. 


ICD-10-CA is an international standard for reporting clinical diagnoses developed by the World Health Organization. The Canadian Classification of Health Interventions (CCI) was developed to accompany ICD-10-CA. 

Canadian Coding Standards for ICD-10-CA and CCI

This manual supplements the classification rules inherent in the ICD-10-CA and the Canadian Classification of Health Interventions (CCI) by providing additional information that could not be embedded into the classifications.

International Statistical Classification of Diseases and Related Health Problems, Volume One — Tabular List

This manual brings together the classification of morphology of neoplasms, special tabulation lists for mortality and morbidity, definitions and nomenclature regulations.

International Statistical Classification of Diseases and Related Health Problems, Volume Two — Alphabetical Index

This manual brings together the notes on certification and classification formerly included in the tabular list of ICD-10-CA.

Canadian Classification of Health Interventions, Volume Three — Tabular List

This tabular listing of CCI provides comprehensive coverage of diagnostic, therapeutic and other associated health care interventions. 

Canadian Classification of Health Interventions, Volume Four — Alphabetical Index

This manual contains lead terms (the titles of interventions).

Category/Rubric Tables: ICD-10-CA and CCI

This document contains tables with all categories, chapter headings, block headings, rubrics and sections of codes.

Code Title Tables (for Use With ICD-10-CA/CCI)

This document contains diagnosis and intervention tables, the valid codes, and their short and long descriptions.