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KID Description of Data Elements
The KID is set of longitudinal hospital inpatient databases included in the HCUP family. These databases are created by AHRQ through a Federal-State-Industry partnership.
 
DRGVER - DRG or MS-DRG grouper version used on discharge date
 
Documentation Sections:
General Notes
Uniform Values
State Specific Notes
General Notes
 

The DRG Grouper Version (DRGVER) is assigned by the Medicare DRG grouper during HCUP processing. For discharges occurring before October 1, 1991, DRGVER contains the DRG "revision" number. For discharges after that date, DRGVER contains the DRG "version" number (which is one value higher than the revision number). This coding scheme is consistent with the labeling of the DRG reference material, including the DRG coding books. Thus, on September 30, 1991 the DRGVER = 7; but on October 1, 1991 the DRGVER = 9.

With Version 33 of the DRGs (effective October 2015), CMS revised the DRG software to use International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) diagnoses and procedures. Prior to that the DRG software was based on International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes.

With Version 25 of the DRGs (effective October 2007), CMS revised the DRG scheme (up to 540 DRGs) into over 700 Medicare-severity DRGs (MS-DRGs). First, DRGs were consolidated into 335 base MS-DRGs. Of these, 106 were split into two subgroups, and 152 were split into three subgroups, to arrive at 745 total MS-DRGs. The subgroups were based on the presence of complications or comorbidities (CCs) or major CCs (MCCs).

 
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Uniform Values
VariableDescriptionValueValue Description
DRGVERDRG or MS-DRG grouper version used on discharge date44th revision, eff. Oct 1, 1987
55th revision, eff. Oct 1, 1988
66th revision, eff. Oct 1, 1989
77th revision, eff. Oct 1, 1990
9Version 9, eff. Oct 1, 1991
10Version 10, eff. Oct 1, 1992
11Version 11, eff. Oct 1, 1993
12Version 12, eff. Oct 1, 1994
13Version 13, eff. Oct 1, 1995
14Version 14, eff. Oct 1, 1996
15Version 15, eff. Oct 1, 1997
16Version 16, eff. Oct 1, 1998
17Version 17, eff. Oct 1, 1999
18Version 18, eff. Oct 1, 2000
19Version 19, eff. Oct 1, 2001
20Version 20, eff. Oct 1, 2002
21Version 21, eff. Oct 1, 2003
22Version 22, eff. Oct 1, 2004
23Version 23, eff. Oct 1, 2005
24Version 24, eff. Oct 1, 2006
25Version 25, eff. Oct 1, 2007
26Version 26, eff. Oct 1, 2008
27Version 27, eff. Oct 1, 2009
28Version 28, eff. Oct 1, 2010
29Version 29, eff. Oct 1, 2011
30Version 30, eff. Oct 1, 2012
31Version 31, eff. Oct 1, 2013
32Version 32, eff. Oct 1, 2014
33Version 33, eff. Oct 1, 2015
34Version 34, eff. Oct 1, 2016
35Version 35, eff. Oct 1, 2017
 
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State Specific Notes
None
 
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Internet Citation: HCUP KID Description of Data Elements. Healthcare Cost and Utilization Project (HCUP). September 2008. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/vars/drgver/kidnote.jsp.
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Last modified 9/17/08