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hcup-us.ahrq.gov/datainnovations/clinicaldata/FL20LOINCIntroductionHammond.pdf
February 25, 2008 - Slide 1
An Introduction to LOINC
Logical Observation
Identifier Name and Codes
W. … release (v 1.0) was on 4/24/95
• Originally called Laboratory Observations,
Identifiers, Names and Codes … (LOINC®)
• Has two sections
– Laboratory portion
• Standard test names and codes
• Includes chemistry … The
database contains 50,809 terms
• LOINC continues to evolve with new
codes. … to LOINC codes.
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hcup-us.ahrq.gov/db/nation/neds/NEDS2019Introduction.pdf
September 01, 2021 - ICD-10-CM/PCS codes. … Urban Influence Codes. … ICD-9-CM and ICD-10-CM/PCS Diagnosis and Procedure Codes and CPT Procedure
Codes
• The HCUP-US website … ICD-9-CM and ICD-
10-CM/PCS codes change every October as new codes are introduced and some codes
are … codes are in effect during the period studied
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hcup-us.ahrq.gov/reports/methods/2018-04.pdf
January 01, 2018 - Payer Coding in HCUP Databases was produced in order to inform HCUP data users about
expected payer codes … by (1) presenting detailed information about the expected payer codes collected
by HCUP States; (2 … ) suggesting how these payer codes can be used for research purposes; and (3)
examining the extent … This report includes an analysis of CHIP-
specific HCUP expected payer codes (available for a small … : Common Codes Included in HCUP “Other Payer" Category
(Methods Series Report 2014-03, pages 6–10).
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hcup-us.ahrq.gov/datainnovations/clinicaldata/LinkingClinicalData.jsp
September 01, 2012 - for ICD-9-CM
Elixhauser Comorbidity Software for ICD-9-CM
Utilization Flags for Revenue Center Codes … admission and diagnostic/procedure data
Includes new Present on Admission indicator for diagnosis codes … Test ID WBC
Result 15.6
Ref Range 4.2-10.2
Classifications/Coding
UB04 - UB standard codes … laboratory system
HL7 provides mechanism to send and identify hospital specific
and/or universal codes … POA indicator for non-Medicare cases)
Availability of LOINC® codes for laboratory data
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hcup-us.ahrq.gov/db/vars/dxn/nrdnote.jsp
August 01, 2015 - Prior to 2003, external cause of injury codes (E codes) are included in the diagnosis array (DXn). … Beginning in 2003, any separately reported E codes and any E codes found in the diagnosis array are retained … in a separate array specific to E codes (ECODEn). … How invalid and inconsistent codes are handled varies by data year. … Validity flags (DXVn) indicate invalid, inconsistent diagnosis codes.
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2015Q1Q3_ED.TXT
December 06, 2017 - )
NEDS 2015 Q1Q3 ED 134 INJURY_DROWN 2 Num Injury by drowning or submersion (by E codes) … NEDS 2015 Q1Q3 ED 135 INJURY_FALL 2 Num Injury by falling (by E codes)
NEDS 2015 Q1Q3 … 2 Num Injury by machinery (by E codes)
NEDS 2015 Q1Q3 ED 139 INJURY_MVT 2 Num … Injury involving motor vehicle traffic (by E codes)
NEDS 2015 Q1Q3 ED 140 INJURY_NATURE 2 … 2 Num Injury by poison (by E codes)
NEDS 2015 Q1Q3 ED 142 INJURY_SEVERITY 2 Num
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hcup-us.ahrq.gov/db/vars/drg24/nisnote.jsp
September 01, 2008 - for ICD-9-CM
Elixhauser Comorbidity Software for ICD-9-CM
Utilization Flags for Revenue Center Codes … Logically Mapping ICD-9-CM Codes for DRG Version 24
The diagnoses or procedures selected by the above … The translated codes are then passed to the DRG Version 24 HCFA Grouper software. … The DRG Grouper rules differ in two ways:
diagnosis and procedure codes must be valid on the date … of discharge to be used for assigning the DRG; and
some valid diagnoses (E-codes) are ruled by the
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hcup-us.ahrq.gov/db/vars/drg24/kidnote.jsp
September 01, 2008 - for ICD-9-CM
Elixhauser Comorbidity Software for ICD-9-CM
Utilization Flags for Revenue Center Codes … Logically Mapping ICD-9-CM Codes for DRG Version 24
The diagnoses or procedures selected by the above … The translated codes are then passed to the DRG Version 24 HCFA Grouper software. … The DRG Grouper rules differ in two ways:
diagnosis and procedure codes must be valid on the date … of discharge to be used for assigning the DRG; and
some valid diagnoses (E-codes) are ruled by the
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hcup-us.ahrq.gov/db/state/sasddist/sasddist_filecompmi.jsp
April 01, 2025 - for ICD-9-CM
Elixhauser Comorbidity Software for ICD-9-CM
Utilization Flags for Revenue Center Codes … surgeries and other outpatient services identified by Current Procedural Terminology (CPT®) procedure codes … If a hospital collects CPT procedure codes instead of ICD-9-CM codes, then CPT codes equivalent to the … Records During HCUP Processing
For data year 2018, there were 3 million largely blank records (no CPT codes … , diagnosis codes, or total charges) that were dropped from the file.
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hcup-us.ahrq.gov/toolssoftware/ccs/ccsfactsheet.jsp
July 01, 2025 - for ICD-9-CM
Elixhauser Comorbidity Software for ICD-9-CM
Utilization Flags for Revenue Center Codes … , Clinical Modification (IDC-9-CM), which contains more than 14,000 diagnosis codes and 3,900 procedure … codes. … Clinical Classifications Software can be used with all clinical data that are coded using ICD-9-CM codes … CCS documentation provides a listing of the ICD-9-CM codes that are included in each CCS diagnosis and
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hcup-us.ahrq.gov/db/vars/i10_dxn/nisnote.jsp
September 10, 2008 - for ICD-9-CM
Elixhauser Comorbidity Software for ICD-9-CM
Utilization Flags for Revenue Center Codes … In the HCUP databases, ICD-10-CM diagnoses are represented by alphanumeric codes with a maximum length … The codes are left-justified in the HCUP databases. … Diagnoses are compared to a list of ICD-10-CM codes valid for the discharge date. … California eliminated all occurrences of these codes from the diagnosis fields and packed the diagnosis
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hcup-us.ahrq.gov/db/vars/i10_dxn/kidnote.jsp
September 10, 2008 - for ICD-9-CM
Elixhauser Comorbidity Software for ICD-9-CM
Utilization Flags for Revenue Center Codes … In the HCUP databases, ICD-10-CM diagnoses are represented by alphanumeric codes with a maximum length … The codes are left-justified in the HCUP databases. … Diagnoses are compared to a list of ICD-10-CM codes valid for the discharge date. … California eliminated all occurrences of these codes from the diagnosis fields and packed the diagnosis
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hcup-us.ahrq.gov/datainnovations/clinicaldata/FL25LOINCMaintenance.pdf
September 22, 2010 - New codes for previously unmapped tests
i. Order sets
ii. Result codes
b. … Deprecated LOINC codes
4. … DO NOT REUSE CODES.
ID EXPLANATION
1. … New LOINC versions may contain newly released codes that can be added to a
site’s mappings (particularly … • Keep an updated file of mapped local codes with LOINCs and check for
deprecates using RELMA’s
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hcup-us.ahrq.gov/db/nation/neds/NEDS2015Introduction.pdf
December 01, 2017 - Morbidity Codes
ICD-9-CM and ICD-10-CM diagnosis codes provide valuable insights into the reasons … New codes were introduced, and some codes are retired. … It is essential to check all ICD-9-CM and ICD-10-CM codes used for analysis to ensure
that the codes … New codes were introduced, and
some codes are retired. … It is essential to check all ICD-9-CM and ICD-10-PCS
codes used for analysis to ensure that the codes
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hcup-us.ahrq.gov/datainnovations/ICD10Imp_Romano_NAHDO_October2016.pdf
October 27, 2016 - Body
Part
Approach
Device
Qualifier
ICD-10-PCS Root Operations
4
Example: root operation codes … automated code mapping from ICD-
9-CM to ICD-10-CM/PCS
▪ Provide input and advice regarding mapped codes … /Rate based on ICD-9 codes
Each of these problems required specific investigation to understand and … /Rate based on ICD-9 codes
Comparability of Selected PQIs between
ICD-9-CM and ICD-10-CM/PCS:
No … of Surgical MS-DRGs
• 35% of records in dual coded data using ICD-9-
CM codes
• 40% of records in
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hcup-us.ahrq.gov/db/nation/neds/NEDS2018Introduction.pdf
November 01, 2020 - and the last 3
months contain ICD-10-CM/PCS codes. … Urban Influence Codes. … ICD-9-CM and ICD-10-CM/PCS Diagnosis and Procedure Codes and CPT Procedure
Codes
• The HCUP-US website … ICD-9-CM and ICD-
10-CM/PCS codes change every October as new codes are introduced and some codes
are … codes are in effect during the period studied
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hcup-us.ahrq.gov/db/tools/HCUP_Formats.TXT
December 28, 2023 - = "2603: E Codes: Fall"
2604 = "2604: E Codes: Fire/burn"
2605 … = "2605: E Codes: Firearm"
2606 = "2606: E Codes: Machinery" … 2607 = "2607: E Codes: Motor vehicle traffic (MVT)"
2608 = "2608: E Codes: Pedal … "
2612 = "2612: E Codes: Overexertion"
2613 = "2613: E Codes: … = "2618: E Codes: Other specified and classifiable"
2619 = "2619: E Codes: Other
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hcup-us.ahrq.gov/db/nation/nass/NASSIntroduction2021.pdf
April 01, 2024 - procedure
codes. … ICD-10-CM codes change every October as new codes are introduced and
some codes are retired. … It is critical to check all ICD-10-CM codes used for analysis to
ensure that the codes are in effect … The database includes only CPT codes. HCPCS Level II codes are excluded. … , this procedure information is limited to Level I HCPCS codes (i.e., CPT codes).
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hcup-us.ahrq.gov/db/nation/neds/stats/FileSpecifications_NEDS_2015Q1Q3_IP.TXT
December 06, 2017 - )
NEDS 2015 Q1Q3 IP 108 INJURY_DROWN 2 Num Injury by drowning or submersion (by E codes) … NEDS 2015 Q1Q3 IP 109 INJURY_FALL 2 Num Injury by falling (by E codes)
NEDS 2015 Q1Q3 … 2 Num Injury by machinery (by E codes)
NEDS 2015 Q1Q3 IP 113 INJURY_MVT 2 Num … Injury involving motor vehicle traffic (by E codes)
NEDS 2015 Q1Q3 IP 114 INJURY_NATURE 2 … 2 Num Injury by poison (by E codes)
NEDS 2015 Q1Q3 IP 116 INJURY_SEVERITY 2 Num
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hcup-us.ahrq.gov/toolssoftware/ccs/ICDCodeCorrections.pdf
January 01, 2002 - Label
Previous CCS
Category
New CCS Category
Years
Affected
Impact Precautions
Diagnosis Codes … Gastritis with
Hemorrhage
663
Screening and
history of mental
health and
substance abuse
codes … 660
Alcohol-related
disorders
2008-2013
Mis-assignment of these ICD-
9 codes to this … When using CCS 663
during the years,
2008-2013, remove
cases with ICD codes
5710,5711,5712,5713 … present (i.e., only 18,229
discharges were reassigned to
CCS 2 based on these two
codes).