This section describes the coding practices used to define the data elements in the HCUP databases.
Table of Contents
HCUP CODING PRACTICES
CODING OF DATA ELEMENTS
ATTRIBUTES OF DATA ELEMENTS
|HCUP CODING PRACTICES
The following objectives guided the definition of data elements included in the HCUP databases:
|CODING OF DATA ELEMENTS
Data elements are coded as shown in the following table:
Some data elements are only retained in the form provided by the data source. Other data elements are retained in both an edited or uniformly recoded scheme and in its original form provided by the data source. In either case, the data element for the information retained in its original form uses the suffix _X (i.e., the naming convention of [data element name]_X). For example, expected primary pay source is uniformly coded as data element PAY1 and retained in its original form as PAY1_X.
Data elements that are encrypted into synthetic values have the naming convention of [data element name]_R for re-identified. For example, medical record number is coded as data element MRN_R.
|ATTRIBUTES OF DATA ELEMENTS
Data elements are defined as numeric or character.
Special missing values have been used in HCUP data elements to indicate details of data availability and quality. Missing values differ depending on whether you have obtained HCUP data in SAS or ASCII formats.
|Internet Citation: HCUP Coding Practices. Healthcare Cost and Utilization Project (HCUP). November 2020. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/coding.jsp.
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|Last modified 11/23/20