Skip Navigation

NIS Description of Data Elements
The NIS is set of longitudinal hospital inpatient databases included in the HCUP family. These databases are created by AHRQ through a Federal-State-Industry partnership.
 
DXVn - Diagnosis validity flag: Diagnosis n
 
Documentation Sections:
General Notes
Uniform Values
State Specific Notes
General Notes
 

DXVn are validity flags that identify invalid or inconsistent diagnosis in the data elements DXn. There is one validity flag for each diagnosis, i.e., DXV1 is the validity flag for DX1.

The following are acceptable values for DXVn:

0 indicates a valid and consistent diagnosis code.
1 indicates an invalid code for the discharge date. A six-month window around the discharge date (three months before and three months after) is allowed for anticipation of or lags in response to official ICD-9-CM coding changes.
. indicates a missing (blank) diagnosis code.
.C indicates that the code is inconsistent with the sex of the patient (ED1nn) or the patient's age (ED3nn or ED4nn).

This data element was discontinued in 1998. Information on the validity of a diagnosis code is retained within the data element DXn.

 
Top
 
Uniform Values
VariableDescriptionValueValue Description
DXVnDiagnosis validity flag: Diagnosis n0Valid code
1Invalid code
.No diagnosis code
.CInconsistent: in 1988 to 1997, ED1nn, ED3nn, ED4nn
 
Top
 
 
State Specific Notes
None
 
Top
 
 

Internet Citation: HCUP NIS Description of Data Elements. Healthcare Cost and Utilization Project (HCUP). September 2008. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/vars/dxvn/nisnote.jsp.
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 9/17/08