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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.
 
AGEMONTH - Age in months (when AGE is less than 11 years)
 
Documentation Sections:
General Notes
Uniform Values
State Specific Notes
General Notes
 

Age in months (AGEMONTH) is reported for patients less than 11 years of age. AGEMONTH is calculated from date of birth (DOB) and the admission date (ADATE) with the following exceptions:

  • AGEMONTH is set to the supplied age in months if the age cannot be calculated (ADATE and/or DOB is missing or invalid).
  • AGEMONTH is missing (.) if the age cannot be calculated and the reported age in months is missing.
  • AGEMONTH is missing (.) if the calculated age in years is out of range (AGE NE 0-124).
  • AGEMONTH is invalid (.A) if the age in months cannot be calculated and the supplied age in months is nonnumeric. An invalid calculated AGEMONTH is not replaced by the reported age in months.
  • AGEMONTH is set to inconsistent (.C) if AGEMONTH is inconsistent with neonatal diagnoses (EAGE04), or is inconsistent with maternal diagnoses/procedures (EAGE05).
 
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Uniform Values
 
VariableDescriptionValueValue Description
AGEMONTHAge in months (when AGE is less than 11 years)0-131Months
.Missing
.AInvalid
.CInconsistent: beginning with 1998 data, EAGE04, EAGE05
 
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State Specific Notes

Colorado

Beginning in data year 2014, the reported age in months was used to assign AGEMONTH. Age in months could not be calculated because the date of birth (DOB) provided by Colorado does not include the day of birth. Only birth month and year are provided. The day of birth was set to 15 for all records.



District of Columbia

Only the calculated age in months could be used to assign AGEMONTH because the District of Columbia did not supply this information.



Georgia

Prior to 2001, the reported age in months is available only through 2 years of age. AGEMONTH is missing (.) for patients over 2 years old.

Beginning with the 2001 data, Georgia reported age in months through 11 years of age (0-132 months).



Michigan

Prior to 2001, AGEMONTH could not be calculated because Michigan did not report admission and birth dates. Beginning with the 2001 data, Michigan provided complete dates and AGEMONTH could be calculated.



Minnesota

Only the calculated age in months could be used to assign AGEMONTH because Minnesota did not supply this information.



Nebraska

Only the calculated age in months could be used to assign AGEMONTH because Nebraska did not supply this information.



Nevada

Only the calculated age in months could be used to assign AGEMONTH because Nevada did not supply this information.



South Dakota

Only the calculated age in months could be used to assign AGEMONTH because South Dakota did not supply this information.



Vermont

Only the calculated age in months could be used to assign AGEMONTH because Vermont did not supply this information.



Washington

For 2010, Washington supplied age in months, but it was calculated using discharge date instead of admission date. LOS can be used to adjust the age accordingly.


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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=agemonth.
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Last modified 8/12/08