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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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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
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.

ICD-10-CA and CCI Code Evolution Chronicle

List of all ICD-10-CA and CCI codes, with their long code titles, from versions 2006 to 2018. Also identified are the top 100 codes assigned in the DAD/NACRS in 2016–2017 and codes used in selected CIHI indicators.

Post-Intervention Condition: Locating the Primary Code

This job aid provides guidance in locating the correct ICD-10-CA primary code assignment for conditions or symptoms that meet the criteria of a post-intervention condition.  

ICD-10-CA and CCI Trending (Evolution)

Outlines the changes in a code from version 2015 to version 2018, and includes a comprehensive listing of all the ICD-10-CA and CCI codes in version 2018

Resolving a Coding Challenge

Job aid to help health information management (HIM) professionals resolve coding challenges.

Changes to the Classifications eQuery Coding Question Service: What You Need to Know

This bulletin provides an overview of changes that are being made to the content requirements for questions submitted to the Classifications eQuery coding question service.

iCODE Strategy

Apply this problem-solving strategy to help resolve a coding challenge. 

CCI: A Guide to Intervention Code Assignment

This guide brings together the basic requirements for coding with the Canadian Classification of Health Interventions (CCI) along with the finer points on commonly encountered challenges. 

A Guide to Obstetrical Coding

This guide is a resource that addresses some of the more complex and challenging areas of obstetrical coding using ICD-10-CA and CCI.

Canadian Coding Standards Evolution Chronicle

Provides a comprehensive listing of the changes to the coding standards from 2001 to 2018.  

ICD-10-CA/CCI for General Public (non–Core Plan Client)

This page provides the general public (non–Core Plan clients) with access to ICD-10-CA (version 2018) and CCI (Canadian Classification of Health Interventions). 

ICD-10-CA/CCI for Core Plan Subscribers

This page provides CIHI Core Plan clients with access to ICD-10-CA (version 2018) and CCI (Canadian Classification of Health Interventions). 

Classifications and Terminologies 2018–2019 education refresh

Highlights of the Education Refresh and resulting changes that will take effect fiscal 2018-19.  

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.

Classifications and Terminologies 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.

Tips for Coders: ICD-10-CA Classification of Multiple Hernias

This Tip for Coders is to provide some guidance on the correct ICD-10-CA classification of multiple hernias where different axes of classification are involved.