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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.
 
MDC18 - MDC, Version 18
 
Documentation Sections:
General Notes
Uniform Values
State Specific Notes
General Notes
 

The Major Diagnostic Category, Version 18 (MDC18) is assigned by the HCFA DRG Grouper algorithm during HCUP processing. Refer to the notes for the data element DRG18 for complete details. MDC18 is available on the HCUP databases from 1998 to 2006.

Labels

Labels for the MDCs are provided as an ASCII file in HCUP Tools: Labels and Formats.

 
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Uniform Values
VariableDescriptionValueValue Description
MDC18MDC, Version 18nnMDC value
 
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State Specific Notes
None
 
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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/mdc18/nisnote.jsp.
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Last modified 9/17/08