| BYEAR - Birth year |
| Documentation Sections: |
| General Notes |
| Uniform Values |
| State Specific Notes |
| General Notes |
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Birth year (BYEAR) is derived from the date of birth (DOB). If DOB is missing, then BYEAR is missing (.). If DOB is invalid, then BYEAR is invalid (.A). |
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| Uniform Values | ||||||||||||
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| State Specific Notes |
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New York In the 1998-2000 data, birth year (BYEAR) is missing (.) on AIDS/HIV discharges. New York identifies AIDS/HIV records by ICD-9-CM diagnosis code or DRG:
Please note that the admitting diagnosis is not retained in the HCUP databases. |
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| Internet Citation: HCUP Central Distributor SASD Description of Data Elements - All States. Healthcare Cost and Utilization Project (HCUP). November 2025. Agency for Healthcare Research and Quality, Rockville, MD. hcup-us.ahrq.gov/db/vars/sasddistnote.jsp?var=byear. |
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| Last modified 11/19/25 |