Part C: Derived Data CHIA produces from the discharge data a number of derived elements and enhancements. These include Groupers and Calculated Fields. FY15 HIDD Groupers For researcher convenience, CHIA performs data grouping using 3M™ APR-DRG groupers. For the FY2015 HIDD, CHIA calculated three All Patient Refined (APR) Diagnostic Related Groups (DRGs) and one Medicare (CMS) Diagnosis Related Grouper (Table 2). For each DRG type, CHIA also calculated the Major Diagnosis Category, and two subclasses (Severity of Illness and Risk of Mortality) for each discharge. FY2015 HIDD Major Diagnostic Severity of Illness Risk of Mortality Grouper Available Category Field Field Field APR-DRG 20.0 FY2007-FY2015 Yes Yes Yes APR–DRG 26.1 FY2009-FY2015 Yes Yes Yes APR–DRG 30.0 FY2009-FY2015 Yes Yes Yes CMS-DRG 32.0 FY2015 Yes n/a n/a HIDD Groupers Across Table VHAF - HIDD AP-DRG (APD) APR-DRG Version 12 CMS - DRG FISCAL V V V V V V V V V V V V V V V V V V V V 2 V 8 YEAR 12 14.1 18 21 25.1 12 15 20 26.1 30 24 25 26 27 28 29 30 31 32 (fHCFA) (fHCFA) 2015 X X X X 2014 X X X X X X 2013 X X X X X X 2012 X X X X X X 2011 X X X X X X 2010 X X X X X X 2009 X X X X 2008 X X X X 2007 X
Part C: Derived Data CHIA produces from the discharge data a number of derived elements and enhancements. These include Groupers and Calculated Fields. FY15 HIDD Groupers For researcher convenience, CHIA performs data grouping using 3M™ APR-DRG groupers. For the FY2015 HIDD, CHIA calculated three All Patient Refined (APR) Diagnostic Related Groups (DRGs) and one Medicare (CMS) Diagnosis Related Grouper (Table 2). For each type, CHIA also calculated the Major Diagnosis Category, and two subclasses (Severity of Illness and Risk of Mortality) for each discharge. FY2015 HIDD Grouper Available Major Diagnostic Category Field Severity of Illness Field Risk of Mortality Field APR-DRG 20.0 FY2007-FY2015 Yes Yes Yes APR–DRG 26.1 FY2009-FY2015 Yes Yes Yes APR–DRG 30.0 FY2009-FY2015 Yes Yes Yes CMS-DRG 32.0 FY2015 Yes n/a n/a HIDD Groupers Across Table HIDD AP-DRG (APD) APR-DRG Version 12 VHAF - DRG CMS - DRG FISCAL YEAR V 12 V 14.1 V 18 V 21 V 25.1 V 12 V 15 V 20 V 26.1 V 30 V 24 V 25 V 2 (fHCFA) V 8 (fHCFA) V 26 V 27 V 28 V 29 V 30 V 31 V 32 2015 X 2014 X X X X 2013 X X X X X X 2012 X X X X X X 2011 X X X X X X 2010 X X X X X X 2009 X X X X X X 2008 X X X X 2007 X X X X
CHIADOC-HIDD-Guide-2015.docx