CMS' ICD-9-CM to and from ICD-10-CM and ICD-10-PCS Crosswalk or General Equivalence Mappings

Centers for Medicare & Medicaid Services CMS has developed the ICD-9-CM to and from ICD-10-CM and ICD-10-PCS General Equivalence Mappings to make converting from ICD-9-CM to or from ICD-10-CM and ICD-10-PCS easier. Their ICD-10 page has information and data about the transition.

An easy introduction to using these files is available.

A Basic FAQ and Techincal FAQ are available.

The FAQs above make reading the Technical Documentation easier.

A collection of data sets of ICD9 titles is available.

Jean Roth set up the processed versions of the files and combined the CM and PCS to make the files easier to use.

Clinical Modification (CM)
ICD-10-CM to ICD-9-CM SAS Stata CSV desc
ICD-9-CM to ICD-10-CM SAS Stata CSV desc
Procedure Coding System (PCS)
ICD-10-PCS to ICD-9-PCS SAS Stata CSV desc
ICD-9-PCS to ICD-10-PCS SAS Stata CSV desc
Combined CM and PCS
ICD-10-CM and PCS to ICD-9-CM SAS Stata CSV desc

Contact data@nber.org with questions, comments, or suggestions.

Last Update: May 11, 2016 Created by Jean Roth December 20, 2012

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