UHDDS Data Elements & Definitions
Personal Identifier - answer✔✔A unique number identifying the patient, applicable to the
individual regardless of health care source or third-party
Date of Birth - answer✔✔4 digits for year of birth, but 3 digits are adequate to capture the
century
Sex - answer✔✔Male Female Undetermined
Race Ethnicity - answer✔✔Race: American Indian/Eskimo/Aleut
Asian or Pacific Islander
Black, White, Other, Race Unknown
Ethnicity: Spanish/Hispanic Origin
Not of Spanish/Hispanic Origin
Unknown
Residence - answer✔✔Usual residence, full address and zip code (9 digit zip code, if available)
Hospital Identification - answer✔✔A unique institutional number across data systems, to allow
for tracking and linkage of multiple records; preferably the National Provider Identifier (NPI)
Admission Date - answer✔✔Month, day, and year. Clarification is added to this data item to
note that for emergency and observation type patients, the time of admission is guided by the
time that the physician gives the order to admit the patient as an inpatient
Type of Admission - answer✔✔Scheduled: defined as an arrangement with the admission office
at least 24 hour prior to admission.
Unscheduled: all other admissions
Discharge date - answer✔✔Month, day, and year
Physician Identification: Attending - answer✔✔Each physician should have a unique
identification number across all hospitals and data systems. The NPI is recommended
Physician Identification - answer✔✔Each physician should have a unique identification number
across all hospitals and data systems.