NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

CMS Impact File Hospital Inpatient Prospective Payment System (IPPS)

CMS describes the impact files as "generally prepared in the summer preceding the Federal Fiscal year and are based on the best data available at the time. The files are used in estimating payment impacts of various policy changes to the IPPS proposed and finalized in the Federal Register."

The 1994-on files contain variables such as

  • hospital casemix and grouper version for casemix
  • wage index
  • disproprortionate share (DSH) percentage
  • outlier payments percentage
  • cost-to-charge ratio
  • number of beds
  • medicare discharges
  • MSA, CBSA, SSA state and county, Census division or region, urban/rural
  • medicare days as a percentage of total inpatient days

A researcher kindly shared the 1986-1993 data from long ago downloads.

Jean Roth gathered many source files and documentation and set up the impact[CCYY].[dta|sas7bdat|csv] versions of the source Impact files with consistent file and variable names and variable types over time to make the files easier to use. Please let me know if you have comments or additional source material.

Data

Year
Stata
SAS
CSV
Source Materials
Description
ZIP
Data
Desc
2017
dta
sas7bdat
csv
zip
XLS
desc
2016
dta
sas7bdat
csv
zip
XLS
desc
2015
dta
sas7bdat
csv
zip
XLS
desc
2014
dta
sas7bdat
csv
zip
XLS
desc
2013
dta
sas7bdat
csv
zip
XLS
desc
2012
dta
sas7bdat
csv
zip
XLS
desc
2011
dta
sas7bdat
csv
zip
XLS
desc
2010
dta
sas7bdat
csv
zip
Data
desc
2009
dta
sas7bdat
csv
zip
xls
csv
--
desc
2008
dta
sas7bdat
csv
zip
xls
txt
Desc
desc
2007
dta
sas7bdat
csv
zip
xls
csv
pdf
desc
desc
2006
dta
sas7bdat
csv
zip
xls
csv
Desc
desc
2005
dta
sas7bdat
csv
zip
csv
Desc
desc
2004
dta
sas7bdat
csv
zip
xls
csv
pdf
desc
2003
dta
sas7bdat
csv
zip
xls
csv
pdf
desc
2002
dta
sas7bdat
csv
zip
csv
txt
--
desc
2001
dta
sas7bdat
csv
zip
xls
pdf
desc
2000
dta
sas7bdat
csv
zip
txt
pdf
desc
1999
dta
sas7bdat
csv
zip
txt
pdf
desc
1998
dta
sas7bdat
csv
zip
txt
pdf
desc
1997
dta
sas7bdat
csv
zip
txt
pdf
desc
1996
dta
sas7bdat
csv
zip
txt
pdf
desc
1995
dta
sas7bdat
csv
zip
txt
pdf
desc
1994
dta
sas7bdat
csv
zip
txt
pdf
desc
1993
dta
sas7bdat
csv
--
desc
1992
dta
sas7bdat
csv
desc
1991
dta
sas7bdat
csv
desc
1990
dta
sas7bdat
csv
desc
1989
dta
sas7bdat
csv
desc
1988
dta
sas7bdat
csv
desc
1987
dta
sas7bdat
csv
desc
1986
dta
sas7bdat
csv
desc

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

Last Update: December 16, 2016 Created by Jean Roth June 10, 2014

 
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