NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

CMS Casemix File Hospital Inpatient Prospective Payment System (IPPS)

CMS describes the casemix files in the following way: "This file contains hospitals case mix indexes (CMI) for discharges. A hospital's CMI represents the average diagnosis-related group (DRG) relative weight for that hospital. It is calculated by summing the DRG weights for all Medicare discharges and dividing by the number of discharges. CMIs are calculated using both transfer-adjusted cases and unadjusted cases."

The casemix variables are also available in the CMS Impact file, and the impact file includes earlier years of data as well.

Data

Year
Stata
SAS
CSV
Source Materials
Description
ZIP
Data
Desc
2018
dta
sas7bdat
csv
zip
txt
desc
2017
dta
sas7bdat
csv
zip
txt
desc
2016
dta
sas7bdat
csv
zip
txt
desc
2015
dta
sas7bdat
csv
zip
txt
desc
2014
dta
sas7bdat
csv
zip
txt
desc
2013
dta
sas7bdat
csv
zip
txt
desc
2012
dta
sas7bdat
csv
zip
txt
desc
2011
dta
sas7bdat
csv
zip
txt
desc
2010
dta
sas7bdat
csv
zip
txt
desc
2009
dta
sas7bdat
csv
zip
txt
desc
2008
dta
sas7bdat
csv
zip
txt
desc
2007
dta
sas7bdat
csv
zip
xls
desc
2006
dta
sas7bdat
csv
zip
txt
desc
2005
dta
sas7bdat
csv
zip
txt
desc
2004
dta
sas7bdat
csv
zip
txt
desc
2003
dta
sas7bdat
csv
zip
txt
desc
2002
dta
sas7bdat
csv
zip
txt
desc

To report errors, or if you have comments or suggestions, e-mail jroth@nber.org.

Last Update: August 30, 2017 Created by Jean Roth December 19, 2016

 
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