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

Source CMS

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 Technical FAQ are available.

The FAQs above make reading the Technical Documentation easier.

A collection of data sets of ICD9 titles is available.

NBER 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