Data Sources—Indian Health Service (IHS)
Patient Information Reporting System (NPIRS)
U.S. Department of Health and Human
Services, Indian Health Service.
NPIRS is the national data repository for all IHS health
care data on all patient registration and all visit encounters.
NPIRS data are derived from various
government and commercial health care information systems that are
largely transaction-based systems used to support patient care.
The National Data Warehouse (NDW) is an upgraded
version of NPIRS.
All registration records (all
dates) and all encounter records (dated October 1, 2000, to the present). Registration
tables contain patient information, including name, demographic data, medical
chart data, aliases, and insurance eligibility data. Encounter tables contain
encounter information, including location of treatment, clinic, provider,
medications, and diagnosis codes.
NPIRS collects data on approximately 1.9 million American
Indians and Alaska Natives who belong to 562 federally recognized tribes in 35 States.
Age, gender, and Indian status.
1997 to present.
National IHS service area estimates (Aberdeen, Alaska,
Albuquerque, Bemidji, Billings, Nashville, Navajo, Oklahoma, Phoenix, and Tucson,
excluding Portland and California service areas).
Since no IHS inpatient facilities are located in either
the Portland or California service areas, hospitalizations from these regions are
not present in the data; the denominator was correspondingly reduced.
Agency home page: http://www.ihs.gov.
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