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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.
 
BMONTH - Birth month
 
Documentation Sections:
General Notes
Uniform Values
State Specific Notes
General Notes
 

Birth month (BMONTH) is derived from the date of birth (DOB). If DOB is missing, then BMONTH is missing (.). If DOB is invalid, then BMONTH is invalid (.A).

 
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Uniform Values
 
VariableDescriptionValueValue Description
BMONTHBirth month1-12Birth month
.Missing
.AInvalid
 
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State Specific Notes

New York

In the 1998-2000 data, birth month (BMONTH) is missing (.) on AIDS/HIV discharges. New York identifies AIDS/HIV records by ICD-9-CM diagnosis code or DRG:

  • An admitting, principal, or secondary diagnosis of "042" "043" "044" "7958" "27910", "27919", "2793", "1363", "79571", "07951", "07952", "07953" or "V08".
  • A DRG of 488 "HIV with Extensive Operating Room Procedure", 489 "HIV with Major related condition", or 490 "HIV with or without Other Related Condition".

Please note that the admitting diagnosis is not retained in the HCUP databases.


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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=bmonth.
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Last modified 8/12/08