Skip Navigation

Central Distributor SID: Description of Data Elements
This section describes how HCUP data elements are coded, restrictions on their use, their uniform values, and State-specific coding practices.
 
DXPOAn - Diagnosis n, present on admission indicator
 
Documentation Sections:
General Notes
Uniform Values
State Specific Notes
General Notes
 

DXPOAn indicates whether each diagnosis (DXn) was present at admission. This provides an indicator of complications arising during a hospitalization. The coding of this data element is consistent with the UB-04 standards. No edits checks are performed on this data element during HCUP processing.

Beginning with the 2017 HCUP databases, external cause of morbidity codes are included with other diagnoses in the diagnosis-related data elements (I10_DXn, I10_NDX, and DXPOAn) and are no longer retained in separate data elements (I10_ECAUSEn, I10_NECAUSE, and E_POAn).

From 1998 to 2006, this data element was called DXatAdmitn and coded with 0/1 values. Before 1998, this data element is called TMDXn.

 
Top
 
 
 
Uniform Values
 
VariableDescriptionValueValue Description
DXPOAnDiagnosis n, present on admission indicator YYes
NNo
WClinically undetermined
UDocumentation is insufficient to determine if condition is present on admission
E, 1, or XExempt from POA reporting
BlankAcceptable value on diagnoses that are exempt from POA reporting. Indicates missing information on nonexempt diagnoses.
 
Top
 
 
 
State Specific Notes

Arizona

For 2011, the data source has informed us that some hospitals had problems reporting Present on Admission indicators. We recommend checking hospital statistics before using this data element.

In 2010 only, the DXPOAn data elements have been suppressed for one hospital that provided erroneous data for the indicators that the diagnosis was present on admission on most of its discharges.

Arizona
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes / Present at time of inpatient admission
N No N No / Not present at time of inpatient admission
U Unknown U Unknown
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
E Exempt from POA reporting E Exempt from POA reporting
1 Unreported, not used; Exempt from POA reporting 1 Exempt from POA reporting
X Hospital exempt from POA reporting X Exempt from POA reporting
Blank Missing Blank Missing
Other Invalid


Arkansas
Arkansas
IPOAn DXPOAn
Value Description Value Description
Y Yes - present at the time of inpatient admission Y Yes / Present at time of inpatient admission
N No - not present at the time of inpatient admission N No / Not present at time of inpatient admission
U No information in the record U Unknown
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
e or E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
-   X Exempt from POA reporting
Blank Missing Blank Missing
Other Invalid


California
California
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes / Present at time of inpatient admission
N No N No / Not present at time of inpatient admission
U Unknown U No information on the record
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
0 Missing or Invalid blank Missing
Blank Missing
Other Invalid


Florida
Florida
(Valid beginning in 2011)
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes / Present at time of inpatient
N No N No / Not present at time of inpatient admission
U Unknown U Unknown
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
-- -- X Exempt from POA reporting
Blank Missing Blank Missing
Other Invalid Blank Missing



Florida
(Valid 2010 Only)
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes
N No N No
U Unknown U Unknown
W Clinically undetermined W Clinically undetermined
1 Exempt E Exempt from POA reporting
E Exempt
Blank   Blank Missing or Invalid
Other Any undocumented value



Florida
(Valid prior to 2010)
IPOAn DXPOAn
Value Description Value Description
Y, 1 Yes Y Yes
N, 2 No N No
U, 3 Unknown U Unknown
W Clinically undetermined W Clinically undetermined
E Exempt E Exempt from POA reporting
Blank  
Other Any undocumented value Blank Missing or Invalid


Georgia
Georgia
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes
N No N No
U Unknown U Unknown
W Clinically undetermined W Clinically undetermined
- -- E Exempt from POA reporting
1 Exempt from POA reporting 1
- -- X
Blank Missing Blank Missing
Other Invalid


Hawaii
Hawaii
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes / Present at time of inpatient admission
N No N No / Not present at time of inpatient admission
U No Information in the record U Unknown
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
blank Missing Blank Missing
Other Invalid


Iowa

For 2010-2018, the data source has informed us that some hospitals had problems reporting Present on Admission indicators. We recommend checking hospital statistics before using this data element.

Iowa
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes / Present at time of inpatient admission
N No N No / Not present at time of inpatient admission
U Unknown U Unknown
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
-- -- E Exempt from POA reporting
-- -- 1 Exempt from POA reporting
-- -- X Exempt from POA reporting
Blank Unreported/Not used, Code exempt from POA reporting Blank Missing
Other Any documented values Other Invalid


Kansas
Kansas
IPOAn DXPOAn
Value Description Value Description
Y Diagnosis was present at time of admission Y Yes
N Diagnosis was not present at time of admission N No
U Unknown - documentation insufficient to determine U Unknown
W Clinically undetermined W Clinically undetermined
E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
X Exempt from POA reporting X Exempt from POA reporting
Blank Missing Blank Missing
Other Invalid


Kentucky

Prior to 2009, discharges with source value "blank" were incorrectly mapped to "E" (Exempt from POA Reporting). Beginning in 2009, these blank values were correctly mapped to missing.

Kentucky
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes
N No N No
U Unknown U Unknown
W Clinically undetermined W Clinically undetermined
-- -- E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
-- -- X Exempt from POA reporting
Blank Missing Blank Missing
Other Invalid


Maine

In 2009, the primary present on admission indicator was not provided and therefore it is 100% blank.

Beginning in 2008, Maine supplies present on admission indicator for diagnoses. During HCUP processing, blank values for POA were set to missing; these values may indicate Exempt from POA reporting.

Maine
IE_POAn E_POAn
Value Description Value Description
y, Y Yes Y Yes
n, N No N No
u, U Unknown U Unknown
w, W Clinically undetermined W Clinically undetermined
e, E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
x, X Exempt from POA reporting X Exempt from POA reporting
Blank Missing Blank Missing
Other Invalid Blank Missing


Maryland
Maryland
(Beginning in 2011)
IPOAn DXPOAn
Value Description Value Description
y or Y Diagnosis Present on Admission Y Yes / Present at time of inpatient admission
N Diagnosis Not Present on Admission N No / Not present at time of inpatient admission
U Diagnosis Insufficient Documentation to Determine U Unknown
W Diagnosis Unable to Clinically Determine W Provider is unable to clinically determine whether condition was present on admission or not
E Diagnosis Exempt from reporting E Exempt from POA reporting
    X Exempt from POA reporting
    1 Exempt from POA reporting
Blank Missing Blank Missing
1, Other Invalid



Beginning in 2008, a new value, 1 "Exempt from POA reporting", was added.

Maryland
(2008 - 2010)
IPOAn DXPOAn
Value Description Value Description
y or Y Yes Y Yes
N No N No
U Unknown/Insufficient Documentation to Determine U Unknown
W Clinically undetermined/Unable to Clinically Determine W Clinically undetermined
E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting
Blank Missing Blank Missing
Other Invalid



Maryland
(2007)
IPOAn DXPOAn
Value Description Value Description
y or Y Yes Y Yes
N No N No
U Unknown/Insufficient Documentation to Determine U Unknown
W Clinically undetermined/Unable to Clinically Determine W Clinically undetermined
E Exempt from POA reporting E Exempt from POA reporting
Blank Missing Blank Missing


Massachusetts

Beginning with 2007, Massachusetts provided diagnosis present on admission indicator.

Massachusetts
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes/Present at time of inpatient admission
N No N No/Not present at time of inpatient admission
U Unknown U Documentation is insufficient to determine if condition is present on admission
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
E or A Not applicable E Exempt from POA reporting
1 Not applicable 1 Exempt from POA reporting
    X
Blank Not applicable Blank Exempt from POA reporting: Acceptable value on diagnoses that are exempt from POA reporting. Indicates missing information on nonexempt diagnoses.
"-" Any undocumented value Blank Missing/Invalid


Michigan
Michigan
(Valid beginning in 2011)
IE_POAn E_POAn
Value Description Value Description
Y Yes Y Yes / Present at time of inpatient admission
N No N No / Not present at time of inpatient admission
U Unknown U Unknown
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
X Hospital exempt from POA reporting X Exempt from POA reporting
0 Missing Blank Missing
Blank Missing
Other Invalid



Michigan
(Valid 2010 Only)
IE_POAn E_POAn
Value Description Value Description
Y Yes Y Yes
N No N No
U Unknown U Unknown
W Clinically undetermined W Clinically undetermined
1 Exempt from POA reporting E Exempt from POA reporting
0 Missing Blank Missing
Blank Missing
Other Invalid


Minnesota
Minnesota
IPOAn DXPOAn
Value Description Value Description
Y Diagnosis was present at time of admission. Y Yes
N Diagnosis was not present at time of admission N No
U Unknown - documentation insufficient to determine U Unknown
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
E Exempt from POA reporting E Exempt from POA reporting
1 Unreported/Not used. Exempt from POA reporting 1 Exempt from POA reporting
- Exempt from POA reporting X Exempt from POA reporting
Blank Missing Blank Missing
Other Invalid


Mississippi
Mississippi
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes / Present at time of inpatient admission
N No N No / Not present at time of inpatient admission
U No information in the record U Unknown
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
-- -- E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
    X Exempt from POA reporting
Blank Code exempt from POA reporting/Missing Blank Missing
Other Invalid


Nebraska
Nebraska
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes
N No N No
U Unknown U Unknown
W Clinically undetermined W Clinically undetermined
E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
X Exempt from POA reporting X Exempt from POA reporting
Blank Missing Blank Missing
Other Invalid


Nevada

Values 1, E, Z were mapped to "E" Exempt from POA reporting, in NV 2008 data.

Nevada
IPOAn DXPOAn
Value Description Value Description
Y or y Yes Y Yes / Present at time of inpatient admission
N No N No / Not present at time of inpatient admission
U or u Not enough information in the record U Documentation is insufficient to determine if condition is present on admission
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
E Exempt from POA reporting E Exempt from POA reporting
Z Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
    X Hospital exempt from POA reporting
Other Missing blank Missing
Other Invalid blank Missing


New Jersey
New Jersey
(Valid beginning in 2011)
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes / Present at time of inpatient admission
N No N No / Not present at time of inpatient admission
U No information in the record U Unknown
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
-- -- E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
-- -- X Exempt from POA reporting
(blank) Missing Blank Missing
(other) Invalid



New Jersey
(Valid in 2008 & 2010)
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes
N No N No
U No information in the record U Unknown
W Clinically undetermined W Clinically undetermined
1 Exempt from POA reporting E Exempt from POA reporting
E Exempt from POA reporting
(blank) Missing Blank Missing
(other) Invalid



New Jersey
(2009)
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes
N No N No
U No information in the record U Unknown
W Clinically undetermined W Clinically undetermined
1 Exempt from POA reporting Blank Missing
E Exempt from POA reporting
(blank) Missing
(other) Invalid


New Mexico
New Mexico
IPOAn DXPOAn
Value Description Value Description
Y Yes / Present at time of inpatient admission Y Yes
N No N No / Not present at time of inpatient admission
U No information on the record U Unknown
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting E Exempt from POA reporting (2009-2010)
1 Exempt from POA reporting 1 Exempt from POA reporting(Valid starting in 2011)
(blank)   blank Missing
other  


New York

An indication that the principal diagnosis was present on admission (POA) was not provided by the HCUP Partner in New York. Because the principal diagnosis was, by definition, present at the time of admission, DXPOA1 was imputed to a value of one for all records.

New York
IPOAn DXPOAn
Value Description Value Description
2 No, not present at time of admission N Not present at time of inpatient admission
1 Yes, present at the time of admission Y Present at time of inpatient admission
3 Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
9 Unknown U Unknown
X Exempt from POA reporting X Exempt from POA reporting
blank Missing blank Missing
other Invalid


North Carolina
North Carolina
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes
N No N No
U Unknown U Unknown
W Clinically undetermined W Clinically undetermined
- Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
- Exempt from POA reporting X Exempt from POA reporting
Blank Missing Blank Missing
Other Invalid


Oregon

Beginning in 2018, blank source values will be recoded to blank (Missing).

For 2011-2017, blank source values are recoded to "1" (Exempt).

For 2010, blank source values are recoded to "E" (Exempt).

For 2009, the source values of "1"s and blanks were recoded to "Missing or Invalid" instead "Exempt from POA Reporting".

Oregon
(Valid Beginning in 2008)
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes / Present at time of inpatient admission
N No N No / Not present at time of inpatient admission
U No information in the record U Unknown
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
- Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
(blank) Exempt from POA reporting (blank) Missing
(other)  


Rhode Island
Rhode Island
IPOAn DXPOAn
Value Description Value Description
Y Diagnosis was present at time of admission Y Yes
N Diagnosis was not present at time of admission N No
U Unknown - documentation insufficient to determine U Unknown
W Clinically undetermined W Clinically undetermined
E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
-- -- X Exempt from POA reporting
Blank Missing Blank Missing
Other Invalid


South Carolina
South Carolina
(Valid Beginning in 2008)
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes / Present at time of inpatient admission
N No N No / Not present at time of inpatient admission
U Unknown U No information on the record
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
blank Missing blank Missing
other Invalid


South Dakota

From 2008-2009, this data element was only collected on Medicare patients.

South Dakota
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes / Present at time of inpatient
N No N No / Not present at time of inpatient admission
U Unknown U Unknown
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
X Exempt from POA reporting X Exempt from POA reporting
Blank Unreported/Not used, Missing Blank Missing
Other Invalid Blank Missing


Vermont
Vermont
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes / Present at time of inpatient admission
N No N No / Not present at time of inpatient admission
U Unknown U Unknown
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
blank, other   Blank Missing


Washington
Washington
IPOAn DXPOAn
Value Description Value Description
Y Yes Y Yes / Present at time of inpatient admission
N No N No / Not present at time of inpatient admission
U No information in the record U Unknown
W Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
E Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1 Exempt from POA reporting
Blank   Blank Missing
Other  


West Virginia
West Virginia
IPOAn DXPOAn
Value Description Value Description
Y Yes (Diagnosis was present at the time of inpatient admission) Y Yes / Present at time of inpatient admission
N No (Diagnosis was not present at the time of inpatient admission) N No / Not present at time of inpatient admission
U No Information in the Record (Documentation insufficeitent to detemrine if condition was present at the time of inpatient admission) U Unknown
W Clinically undetermined (Provider unable to clinically determine whether condition was present at the time of inpatient admission) W Provider is unable to clinically determine whether condition was present on admission or not
    E Exempt from POA reporting
1 Exempt from POA reporting (valid prior to 2014) 1 Exempt from POA reporting
    X Hospital exempt from POA reporting
1, b, or blank Missing blank Missing
other Invalid


Wisconsin
Wisconsin
IE_POAn E_POAn
Value Description Value Description
Y, y Yes Y Yes / Present at time of inpatient admission
N, n No N No / Not present at time of inpatient admission
U, u Unknown U Unknown
W, w Clinically undetermined W Provider is unable to clinically determine whether condition was present on admission or not
E, e Exempt from POA reporting E Exempt from POA reporting
1 Exempt from POA reporting 1
X, x Hospital exempt from POA reporting X
Blank Exempt from POA Blank Missing
Other Invalid

Top
 
 
 

Internet Citation: HCUP Central Distributor SID Description of Data Elements - All States. Healthcare Cost and Utilization Project (HCUP). August 2008. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/vars/siddistnote.jsp?var=dxpoan.
Are you having problems viewing or printing pages on this Website?
If you have comments, suggestions, and/or questions, please contact hcup@ahrq.gov.
Privacy Notice, Viewers & Players
Last modified 8/12/08