-
hcup-us.ahrq.gov/db/nation/nass/stats/nass_summary_stats_dx_pr_grps_unweighted_2019.pdf
January 01, 2019 - -10-CM
25 DXCCSR_BLD001 Num 3 69 Indication that at least one ICD-10-CM diagnosis on the record is included … is included in CCSR BLD002
27 DXCCSR_BLD003 Num 3 75 Indication that at least one ICD-10-CM diagnosis … at least one ICD-10-CM diagnosis on the record is included in CCSR BLD005
30 DXCCSR_BLD006 Num 3 84 … Num 3 87 Indication that at least one ICD-10-CM diagnosis on the record is included in CCSR BLD007 … 32 DXCCSR_BLD008 Num 3 90 Indication that at least one ICD-10-CM diagnosis on the record is included
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hcup-us.ahrq.gov/db/nation/nass/stats/FileSpecifications_NASS_2019_DX_PR_GRPS.TXT
January 01, 2019 - 2019 DX PR GRPS 27 DXCCSR_BLD003 3 Num Indication that at least one ICD-10-CM diagnosis on … 2019 DX PR GRPS 30 DXCCSR_BLD006 3 Num Indication that at least one ICD-10-CM diagnosis on … 2019 DX PR GRPS 33 DXCCSR_BLD009 3 Num Indication that at least one ICD-10-CM diagnosis on … 2019 DX PR GRPS 36 DXCCSR_CIR002 3 Num Indication that at least one ICD-10-CM diagnosis on … 2019 DX PR GRPS 39 DXCCSR_CIR005 3 Num Indication that at least one ICD-10-CM diagnosis on
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hcup-us.ahrq.gov/db/nation/nass/stats/FileSpecifications_NASS_2018_DX_PR_GRPS.TXT
January 01, 2018 - 3 Num Indication that at least one ICD-10-CM diagnosis on the record is included in CCSR BLD002
NASS … 2018 DX PR GRPS 5 DXCCSR_BLD003 3 Num Indication that at least one ICD-10-CM diagnosis on … 2018 DX PR GRPS 8 DXCCSR_BLD006 3 Num Indication that at least one ICD-10-CM diagnosis on … 2018 DX PR GRPS 11 DXCCSR_BLD009 3 Num Indication that at least one ICD-10-CM diagnosis on … -10-CM diagnosis
NASS 2018 DX PR GRPS544 DXCCSR_VERSION 6 Char Version of CCSR for ICD-10-CM
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hcup-us.ahrq.gov/toolssoftware/procedure/procedure.jsp
July 01, 2025 - -10-CM/PCS
Clinical Classifications Software Refined (CCSR)
Elixhauser Comorbidity Software Refined … for ICD-10-CM
Chronic Condition Indicator Refined for ICD-10-CM
Procedure Classes Refined for ICD … -10-CM/PCS Resources
Database Reports
Additional Topics and Archives
Topical Reports
Enhancing … -9-CM
Procedure Classes ICD-9-CM codes were frozen in preparation for ICD-10 implementation … The HCUP Tools for ICD-9-CM should only be used with data for discharges before 10/1/2015.
-
hcup-us.ahrq.gov/db/nation/nrd/corrections2019.jsp
December 01, 2019 - for ICD-10-CM
Chronic Condition Indicator Refined for ICD-10-CM
Procedure Classes Refined for ICD … Refined for ICD-10-PCS
identifying secondary ICD-10-PCS codes as
major or minor, diagnostic … -10-PCS
included in the DX_PR_GRPS file. … Unfortunately, the assignment of PCLASS does not always
match the corresponding secondary ICD-10-PCS … The software tool will use the 25 ICD-10-PCS codes (data elements I10_PR1-I10_PR25) on the
2019 NRD
-
hcup-us.ahrq.gov/db/nation/nass/stats/FileSpecifications_NASS_2020_Encounter.TXT
January 01, 2020 - 10-CM Diagnosis 1
NASS 2020 Encounter 78 I10_DX2 7 Char ICD-10-CM Diagnosis 2
NASS … 7 Char ICD-10-CM Diagnosis 4
NASS 2020 Encounter 81 I10_DX5 7 Char ICD … ICD-10-CM Diagnosis 9
NASS 2020 Encounter 86 I10_DX10 7 Char ICD-10-CM Diagnosis 10 … Char ICD-10-CM Diagnosis 13
NASS 2020 Encounter 90 I10_DX14 7 Char ICD-10-CM Diagnosis … 7 Char ICD-10-CM Diagnosis 17
NASS 2020 Encounter 94 I10_DX18 7 Char ICD-10-CM Diagnosis
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hcup-us.ahrq.gov/tech_assist/index_abc.jsp
February 01, 2022 - for ICD-10-CM
Chronic Condition Indicator Refined for ICD-10-CM
Procedure Classes Refined for ICD … -9-CM
Chronic Condition Indicator for ICD-10-CM
Citations - HCUP Publishing
Clinical Classifications … Software (CCS) for ICD-9-CM
Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses … for ICD-10-PCS
Clinical Classifications Software Refined (CCSR) for ICD-10-CM Procedures for ICD-10 … -9-CM (Elixhauser)
Comorbidity Software Refined for ICD-10-CM (Elixhauser)
Comparison Reports
Contact
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hcup-us.ahrq.gov/db/state/siddist/sid_multi.jsp
August 01, 2025 - for ICD-10-CM
Chronic Condition Indicator Refined for ICD-10-CM
Procedure Classes Refined for ICD … Because of the transition to ICD-10-CM/PCS on October 1, 2015, the 2015 SID are split into two parts. … Three months of 2015 data with ICD-10-CM/PCS codes (discharges from October 1, 2015 - December 31, 2015 … More information about the changes to the HCUP databases for ICD-10-CM/PCS and use of data across the … two coding systems may be found on the ICD-10-CM/PCS Resources page .
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hcup-us.ahrq.gov/db/nation/neds/stats/NEDS_2018_DX_PR_GRPS_MaskedStats.PDF
January 01, 2018 - : Indication that at least one ICD-10-CM diagnosis on the record is included in
CCSR BLD002 35,807,950 … 0 0.00 3.00 0.00 0.07
DXCCSR_BLD003 : Indication that at least one ICD-10-CM diagnosis on the record … : Indication that at least one ICD-10-CM diagnosis on the record is included in
CCSR BLD005 35,807,950 … 0 0.00 3.00 0.01 0.12
DXCCSR_BLD006 : Indication that at least one ICD-10-CM diagnosis on the record … 0 0.00 3.00 0.01 0.12
DXCCSR_BLD009 : Indication that at least one ICD-10-CM diagnosis on the record
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hcup-us.ahrq.gov/tech_assist/index_stu.jsp
February 01, 2022 - for ICD-10-CM
Chronic Condition Indicator Refined for ICD-10-CM
Procedure Classes Refined for ICD … -9-CM
Software Tools - Chronic Condition Indicator (CCI) for ICD-10-CM
Software Tools - Clinical … -9-CM
Software Tools - Elixhauser Comorbidity Software for ICD-10-CM
Software Tools - HCUPnet … -9-CM
Software Tools - Procedure Classes for ICD-10-PCS
Software Tools - Supplemental Variables for … -9-CM
Utilization Flag for ICD-10-PCS
A
| B
| C
|
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hcup-us.ahrq.gov/db/nation/nrd/stats/FileSpecifications_NRD_2015Q4_DX_PR_GRPS.TXT
October 31, 2017 - -10-CM Diagnosis 1
NRD 2015 NRD_2015Q4_DX_PR_GRPS 7 I10_DX2 7 Char ICD … -10-CM Diagnosis 2
NRD 2015 NRD_2015Q4_DX_PR_GRPS 8 I10_DX3 7 Char ICD … -10-CM Diagnosis 4
NRD 2015 NRD_2015Q4_DX_PR_GRPS 10 I10_DX5 7 Char ICD … -10-CM Diagnosis 10
NRD 2015 NRD_2015Q4_DX_PR_GRPS 16 I10_DX11 7 Char ICD … 10
NRD 2015 NRD_2015Q4_DX_PR_GRPS 53 I10_PR11 7 Char ICD-10-PCS Procedure
-
hcup-us.ahrq.gov/db/nation/nrd/stats/MaskedStats_NRD_2022_DX_PR_GRPS.PDF
January 01, 2022 - : ICD-10-PCS Procedure class 7 785,442 15,731,811 1.00 4.00 2.35 2 1,843,675
PCLASS8 : ICD-10-PCS Procedure … -10-PCS Procedure class 12 198,961 16,318,292 1.00 4.00 2.39 2 476,023
PCLASS13 : ICD-10-PCS Procedure … PCLASS17 : ICD-10-PCS Procedure class 17 71,744 16,445,509 1.00 4.00 1.87 2 134,436
PCLASS18 : ICD … -10-PCS Procedure class 18 60,566 16,456,687 1.00 4.00 1.87 2 113,465
PCLASS19 : ICD-10-PCS Procedure … : ICD-10-PCS Procedure class 23 26,100 16,491,153 1.00 4.00 2.02 2 52,827
PCLASS24 : ICD-10-PCS Procedure
-
hcup-us.ahrq.gov/db/nation/nrd/stats/MaskedStats_NRD_2021_DX_PR_GRPS.PDF
January 01, 2021 - : ICD-10-PCS Procedure class 7 809,469 15,996,039 1.00 4.00 2.32 2 1,875,339
PCLASS8 : ICD-10-PCS Procedure … -10-PCS Procedure class 12 206,113 16,599,395 1.00 4.00 2.37 2 488,545
PCLASS13 : ICD-10-PCS Procedure … PCLASS17 : ICD-10-PCS Procedure class 17 72,628 16,732,880 1.00 4.00 1.88 2 136,245
PCLASS18 : ICD … -10-PCS Procedure class 18 61,197 16,744,311 1.00 4.00 1.87 2 114,565
PCLASS19 : ICD-10-PCS Procedure … : ICD-10-PCS Procedure class 23 26,266 16,779,242 1.00 4.00 2.01 2 52,795
PCLASS24 : ICD-10-PCS Procedure
-
hcup-us.ahrq.gov/db/nation/nrd/stats/MaskedStats_NRD_2020_DX_PR_GRPS.PDF
January 01, 2020 - : ICD-10-PCS Procedure class 7 734,952 15,957,742 1.00 4.00 2.34 2 1,721,235
PCLASS8 : ICD-10-PCS Procedure … 16,293,401 1.00 4.00 2.42 2 968,051
PCLASS10 : ICD-10-PCS Procedure class 10 304,827 16,387,867 1.00 … PCLASS17 : ICD-10-PCS Procedure class 17 64,393 16,628,301 1.00 4.00 1.89 2 122,000
PCLASS18 : ICD … -10-PCS Procedure class 18 54,143 16,638,551 1.00 4.00 1.89 2 102,291
PCLASS19 : ICD-10-PCS Procedure … : ICD-10-PCS Procedure class 23 23,418 16,669,276 1.00 4.00 2.04 2 47,676
PCLASS24 : ICD-10-PCS Procedure
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hcup-us.ahrq.gov/db/vars/i10_dxn/nassnote.jsp
August 10, 2019 - for ICD-10-CM
Chronic Condition Indicator Refined for ICD-10-CM
Procedure Classes Refined for ICD … In the HCUP databases, ICD-10-CM diagnoses are represented by alphanumeric codes with a maximum length … The HCUP data elements for ICD-10-CM diagnoses are length 7. … Diagnoses are compared to a list of ICD-10-CM codes valid for the discharge date. … Anticipation of or lags in response to official ICD-10-CM coding changes are permitted for discharges
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hcup-us.ahrq.gov/db/nation/nrd/stats/MaskedStats_NRD_2018_DX_PR_GRPS.PDF
January 01, 2018 - : Indication that at least one ICD-10-CM diagnosis
on the record is included in CCSR BLD002 17,686,511 … 0 0.00 3.00 0.01 0.15
DXCCSR_BLD003 : Indication that at least one ICD-10-CM diagnosis
on the record … : Indication that at least one ICD-10-CM diagnosis
on the record is included in CCSR BLD005 17,686,511 … 0 0.00 3.00 0.01 0.17
DXCCSR_BLD006 : Indication that at least one ICD-10-CM diagnosis
on the record … 0 0.00 3.00 0.02 0.24
DXCCSR_BLD009 : Indication that at least one ICD-10-CM diagnosis
on the record
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2015Q4_IP.TXT
December 06, 2017 - 7 Char ICD-10-CM Diagnosis 4
NEDS 2015 Q4 IP 12 I10_DX5 7 Char ICD-10-CM Diagnosis … Char ICD-10-CM Diagnosis 8
NEDS 2015 Q4 IP 16 I10_DX9 7 Char ICD-10-CM Diagnosis … Char ICD-10-CM Diagnosis 12
NEDS 2015 Q4 IP 20 I10_DX13 7 Char ICD-10-CM Diagnosis … 7 Char ICD-10-CM Diagnosis 16
NEDS 2015 Q4 IP 24 I10_DX17 7 Char ICD-10-CM Diagnosis … 7 Char ICD-10-CM Diagnosis 20
NEDS 2015 Q4 IP 28 I10_DX21 7 Char ICD-10-CM Diagnosis
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hcup-us.ahrq.gov/db/nation/nrd/stats/FileSpecifications_NRD_2019_Core_V2.TXT
January 01, 2019 - -10-CM Diagnosis 1
NRD 2019 NRD_2019_Core 12 I10_DX2 7 Char ICD … -10-CM Diagnosis 2
NRD 2019 NRD_2019_Core 13 I10_DX3 7 Char ICD … -10-CM Diagnosis 3
NRD 2019 NRD_2019_Core 14 I10_DX4 7 Char ICD … ICD-10-CM Diagnosis 11
NRD 2019 NRD_2019_Core 22 I10_DX12 7 Char … ICD-10-PCS Procedure 10
NRD 2019 NRD_2019_Core 82 I10_PR11 7
-
hcup-us.ahrq.gov/db/nation/nrd/stats/FileSpecifications_NRD_2018_Core.TXT
January 01, 2018 - -10-CM Diagnosis 1
NRD 2018 NRD_2018_Core 12 I10_DX2 7 Char ICD … -10-CM Diagnosis 2
NRD 2018 NRD_2018_Core 13 I10_DX3 7 Char ICD … -10-CM Diagnosis 3
NRD 2018 NRD_2018_Core 14 I10_DX4 7 Char ICD … -10-CM Diagnosis 10
NRD 2018 NRD_2018_Core 21 I10_DX11 7 Char ICD … -10-PCS Procedure 10
NRD 2018 NRD_2018_Core 76 I10_PR11 7 Char ICD
-
hcup-us.ahrq.gov/db/nation/nrd/stats/FileSpecifications_NRD_2017_Core.TXT
January 01, 2017 - -10-CM Diagnosis 1
NRD 2017 NRD_2017_Core 12 I10_DX2 7 Char ICD … -10-CM Diagnosis 2
NRD 2017 NRD_2017_Core 13 I10_DX3 7 Char ICD … -10-CM Diagnosis 3
NRD 2017 NRD_2017_Core 14 I10_DX4 7 Char ICD … -10-CM Diagnosis 10
NRD 2017 NRD_2017_Core 21 I10_DX11 7 Char ICD … -10-PCS Procedure 10
NRD 2017 NRD_2017_Core 76 I10_PR11 7 Char ICD