| AGEDAY - Age in days (when AGE is less than 1 year) |
| Documentation Sections: |
| General Notes |
| Uniform Values |
| State Specific Notes |
| General Notes |
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Age in days (AGEDAY) is reported for patients less than 1 year old. AGEDAY is calculated from date of birth (DOB) and the admission date (ADATE) with the following exceptions:
When processing the 1996 HCUP inpatient data, no adjustment was made for the leap year when age was calculated from date of birth and admission date. This caused infants admitted on the day before their first birthday to have AGE=1 and AGEDAY = missing (.), instead of AGE=0 and AGEDAY=364. |
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| Uniform Values | ||||||||||||||||
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| State Specific Notes |
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Arizona Only the calculated age could be used to assign AGEDAY because Arizona did not supply age in days. California Central Distributor only - because of confidentiality restrictions, age in days (AGEDAY) is suppressed on some records. Only the calculated age in days could be used to assign AGEDAY because California did not supply this information. Because California did not provide an admission date, the date of service was used to calculate age in days. District of Columbia Only the calculated age in days could be used to assign AGEDAY because the District of Columbia did not supply this information. Indiana Only the calculated age in days was used to assign AGEDAY. Kentucky Prior to 2008, only the calculated age in days could be used to assign AGEDAY because Kentucky did not supply this information. Beginning 2008, age in days was used to assign AGEDAY. Maine Only the calculated age could be used to assign AGEDAY because Maine did not supply age in days. Maryland Beginning in 2013, the supplied age in days is used when the data element cannot be calculated. Minnesota Only the calculated age in days could be used to assign AGEDAY because Minnesota did not supply this information. Nebraska Only the calculated age in days could be used to assign AGEDAY because Nebraska did not supply this information. New York Beginning with the 2008 data, the HCUP data element AGEDAY is missing (.) for AIDS/HIV patients. New York identifies AIDS/HIV records by ICD-9-CM diagnosis code, DRG, or MS-DRG:
Please note that the admitting diagnosis is not retained in the HCUP databases prior to 2012. Utah Only the calculated age could be used to assign AGEDAY because Utah did not supply age in days. Vermont Only the calculated age in days could be used to assign AGEDAY because Vermont did not supply this information. |
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| Internet Citation: HCUP Central Distributor SEDD Description of Data Elements - All States. Healthcare Cost and Utilization Project (HCUP). October 2024. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/vars/sedddistnote.jsp?var=ageday. |
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| Last modified 10/16/24 |
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