-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/NIS_2011_MaskedStats_Core_Weighted.PDF
January 01, 2011 - NPR Number of procedures on this
record
8,023,590 0 0.00 31.00 1.61 0.03 1.5524 1.6680
ORPROC Major operating … room procedure
indicator
8,023,590 0 0.00 1.00 0.29 0.00 0.2824 0.2951
PAY1 Primary expected payer … 2013 84
Weighted Frequency Distribution for ORPROC
ORPROC Frequency
Percent
of
Total
0: No major operating … room procedure on record 27,446,712 71.12%
1: Major operating room procedure on record 11,144,021 28.88%
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/NIS_2008_MaskedStats_Core.PDF
January 01, 2008 - 1,062.20
NPR : Number of procedures on this record 8,158,381 0 0.00 32.00 1.61 2.09
ORPROC : Major operating … room procedure indicator 8,158,381 0 0.00 1.00 0.30 0.46
PAY1 : Primary expected payer (uniform) 8,144,696 … May 24, 2010 57
Frequency Distribution for ORPROC
ORPROC Frequency
Percent
of
Total
0: No major operating … room procedure on record 5,719,864 70.11%
1: Major operating room procedure on record 2,438,517 29.89%
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/NIS_2009_MaskedStats_Core.PDF
January 01, 2009 - Std Dev
NPR : Number of procedures on this record 7,810,762 0 0.00 37.00 1.59 2.06
ORPROC : Major operating … room procedure indicator 7,810,762 0 0.00 1.00 0.29 0.46
PAY1 : Primary expected payer (uniform) 7,794,273 … May 16, 2011 66
Frequency Distribution for ORPROC
ORPROC Frequency
Percent
of
Total
0: No major operating … room procedure on record 5,508,016 70.52%
1: Major operating room procedure on record 2,302,746 29.48%
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/NIS_2009_MaskedStats_Core_Weighted.PDF
January 01, 2009 - Statistics
Variable Label N N Miss Minimum Maximum Mean
Std Error
of Mean 95% CL for Mean
ORPROC Major operating … room procedure indicator 7,810,762 0 0.00 1.00 0.29 0.00 0.2869 0.3008
PAY1 Primary expected payer … 2011 67
Weighted Frequency Distribution for ORPROC
ORPROC Frequency
Percent
of
Total
0: No major operating … room procedure on record 27,847,867 70.62%
1: Major operating room procedure on record 11,587,089 29.38%
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/NIS_2010_MaskedStats_Core.PDF
January 01, 2010 - 1,071.81
NPR : Number of procedures on
this record 7,800,441 0 0.00 31.00 1.63 2.11
ORPROC : Major operating … room
procedure indicator 7,800,441 0 0.00 1.00 0.29 0.45
PAY1 : Primary expected payer
(uniform) 7,781,931 … May 16, 2012 60
Frequency Distribution for ORPROC
ORPROC Frequency
Percent
of
Total
0: No major operating … room procedure on record 5,534,974 70.96%
1: Major operating room procedure on record 2,265,467 29.04%
-
hcup-us.ahrq.gov/db/nation/nis/tools/stats/NIS_2010_MaskedStats_Core_Weighted.PDF
January 01, 2010 - 0.32 0.01
NPR Number of
procedures on this
record
7,800,441 0 0.00 31.00 1.63 0.03
ORPROC Major operating … room procedure
indicator
7,800,441 0 0.00 1.00 0.29 0.00
PAY1 Primary expected
payer (uniform)
7,781,931 … 2012 65
Weighted Frequency Distribution for ORPROC
ORPROC Frequency
Percent
of
Total
0: No major operating … room procedure on record 27,662,439 70.91%
1: Major operating room procedure on record 11,345,859 29.09%
-
hcup-us.ahrq.gov/db/nation/kid/tools/stats/KID_2009_MaskedStats_Core_Weighted.PDF
January 01, 2009 - 1.27
NPR Number of procedures on this record 3,407,146 0 0.00 35.00 1.09 0.01 1.06 1.12
ORPROC Major operating … room procedure
indicator
3,407,146 0 0.00 1.00 0.25 0.00 0.25 0.25
PAY1 Primary expected payer (uniform … 2011 92
Weighted Frequency Distribution for ORPROC
ORPROC Frequency
Percent
of Total
0: No major operating … room procedure on record 5,525,179 74.97%
1: Major operating room procedure on record 1,845,024 25.03%
-
hcup-us.ahrq.gov/db/nation/kid/tools/stats/KID_2022_MaskedStats_Core.PDF
January 01, 2022 - 38,155,827
PAY1 : Primary expected payer (uniform) 3,005,217 1 6 2.6 2 7,929,883
PCLASS_ORPROC : Indicates operating … room (major diagnostic or
therapeutic) procedure on the record 3,009,812 0 1 0.1 0 314,866
PL_NCHS … 62
Frequency Distribution for PCLASS_ORPROC
PCLASS_ORPROC Frequency
Percent
of Total
0 : No major operating … room procedure on record 2,694,946 89.54%
1 : Major operating room procedure on record 314,866 10.46%
-
hcup-us.ahrq.gov/db/nation/kid/tools/stats/KID_2022_MaskedStats_Core_Weighted.PDF
January 01, 2022 - expected payer (uniform) 3,005,217 1.00 6.00 2.66 0.01 15,027,380 312,361.69
PCLASS_ORPROC Indicates operating … room (major
diagnostic or therapeutic) procedure on
the record
3,009,812 0.00 1.00 0.08 0.00 431,186 … Weighted Frequency Distribution for PCLASS_ORPROC
PCLASS_ORPROC Frequency
Percent
of Total
0 : No major operating … room procedure on record 5,229,677 92.38%
1 : Major operating room procedure on record 431,186 7.62%
-
hcup-us.ahrq.gov/reports/statbriefs/sb194-Inpatient-Mortality-High-Volume-Conditions.pdf
November 01, 2014 - #181, Costs for Hospital Stays in the United States, 2012
• Statistical Brief #186, Most Frequent Operating … Room Procedures Performed in U.S.
-
hcup-us.ahrq.gov/reports/statbriefs/sb108.jsp
April 01, 2011 - least one major therapeutic procedure: All procedures were determined to be major (i.e., requiring an operating … room) or minor and therapeutic or diagnostic based on the Procedure Classes which can be found at:
-
hcup-us.ahrq.gov/db/nation/nis/NISIntroduction2010.pdf
November 01, 2015 - chronic
conditions
NCHRONIC 2008-2010 Count of chronic conditions in the
diagnosis vector
Operating … room
procedure
indicator
ORPROC 2009-2010 Major operating room procedure
indicator for the record … : (0) no major
operating room procedure, (1) major
operating room procedure
Neonatal/ maternal
-
hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2011.pdf
January 01, 2011 - chronic
conditions
NCHRONIC 2008-2011 Count of chronic conditions in the
diagnosis vector
Operating … room
procedure
indicator
ORPROC 2009-2011 Major operating room procedure
indicator for the record … : (0) no major
operating room procedure, (1) major
operating room procedure
Neonatal/ maternal
-
hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2012.jsp
January 01, 2012 - Number of chronic conditions
NCHRONIC
Count of chronic conditions in the diagnosis vector
Operating … room procedure indicator
ORPROC
Major operating room procedure indicator for the record: (0) no … major operating room procedure, (1) major operating room procedure
Neonatal / maternal flag
NEOMAT
-
hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2013.jsp
January 01, 2013 - Number of chronic conditions
NCHRONIC
Count of chronic conditions in the diagnosis vector
Operating … room procedure indicator
ORPROC
Major operating room procedure indicator for the record: (0) no … major operating room procedure, (1) major operating room procedure
Neonatal / maternal flag
NEOMAT
-
hcup-us.ahrq.gov/db/nation/nrd/Introduction_NRD_2019.jsp
January 01, 2019 - certain types of hospital stays, including births, deliveries, injuries, hospital service lines, and operating … room procedures are available in the NRD Core file. … All-listed ICD-9-CM major operating room procedures using CCS (using the HCUP data elements PRCCSn with … room procedure
PRDAY1-PRDAY25
The day on which the procedure is performed. … room procedure indicator
PCLASS_VERSION
Version of the Procedure Classes Refined for ICD-10-
-
hcup-us.ahrq.gov/db/nation/nrd/Introduction_NRD_2010-2014.pdf
January 01, 2014 - All-listed external cause of injury CCS (using the HCUP data elements E_CCSn)
All-listed major operating … room procedures using CCS (using the HCUP data elements
PRCCSn with the corresponding PCLASSn = 3 or … Number of external causes of injury codes
coded
NPR Number of procedures coded
ORPROC
Major operating … room procedure indicator: (1)
major operating room procedure reported on
discharge record, (0) no … major operating room
procedure reported on discharge record
PR1-PR15 ICD-9-CM procedures, principal
-
hcup-us.ahrq.gov/reports/projections/2013-01.pdf
January 01, 2013 - For each MDC there is a list of procedure codes that qualify as operating room
procedures. … If the discharge involves an operating room procedure, it is assigned to
one of the surgical DRGs within … For each MDC there is a list of procedure codes that qualify as operating room
procedures. … If the discharge involves an operating room procedure, it is assigned to
one of the surgical DRGs within
-
hcup-us.ahrq.gov/toolssoftware/ccs/ccs.jsp
July 01, 2025 - Clinical Classifications Software (CCS) for ICD-9-CM
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-
hcup-us.ahrq.gov/db/nation/kid/kid_2012_introduction.jsp
January 01, 1998 - secondary (ICD-9-CM)
NPR
Number of procedures coded on the original record
ORPROC
Major operating … room procedure indicator: (0) no major operating room procedure, (1) major operating room procedure