Term: ICD Conversion Files

Glossary Definition

Last Updated: 2015-01-21


As data support files, the ICD Conversion Files provide a crosswalk for matching ICD-10-CA diagnosis codes and Canadian Classification of Health Interventions (CCI) codes with corresponding ICD-9-CM codes. These files are useful for studies covering a time period prior to and after the date when the version of ICD coding changed in the Vital Statistics Mortality Registry data and the Hospital Abstracts data.

For more detailed information on the ICD Conversion Files, see:

For more information on using the ICD Conversion Files, see the ICD-10 to ICD-9-CM Conversion concept.


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