Hi Jack. There are a number of variations on the Charlson and a lot of different code sources. SEER publishes a version of the code but it's specific to cancer populations: https://healthcaredelivery.cancer.gov/seermedicare/considerations/macro-2014.html There's a Canadian group that has a lot of fantastic resources. I have heard that Canadian dx patterns and codes could differ slightly from code patterns in the US, though, so that's a caveat. http://mchp-appserv.cpe.umanitoba.ca/viewConcept.php?conceptID=1098 http://mchp-appserv.cpe.umanitoba.ca/Upload/SAS/_CharlsonICD10.sas.txt There are also versions specific to Medicare data: https://www.lexjansen.com/wuss/2013/119_Paper.pdf Lastly, if you work for an organization that is part of HCSRN, there are standardized versions of the Charlson and other comorbidity indices available. Hope this helps!
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