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Notifiable Disease and External Cause of Injury Reporting System
Data Overview
Data source

The "version 2" Division of Environmental Health Services (DEHS) now uses the IHS National Data Warehouse (NDW) as its data source. The NDW project stores all Resource Patient Management System (RPMS) Patient Care Component (PCC) data exported to National Programs via the NDW electronic export process. The NDW database also stores Contract Health Services (CHS) data received from the IHS Fiscal Intermediary. CHS data relates to health related services purchased from providers or hospitals outside of the IHS health delivery network. The application uses all available data contained in the NDW database. Notifiable diseases are those health issues that must be reported to the state health departments.

Disease Groupings

The ICD codes used to define the disease "groupings" remained the same for version 2 and include:

  • Asthma - any ICD9 code with the first 3 digits of "493"
  • Injury - ICD9-CM Codes E800-E999 with the exception of Suicide related injuries
  • Intestinal Disease - ICD9 CM codes 001-009
  • Notifiable Disease - any ICD9-CM codes in the following code ranges: 001-139, 460-519, 680-709, V01-V02 and V07-V09
  • Vectorborne Disease - ICD9 CM codes 020-027, 060-066 and 080-088
How the Data Is Counted

The version 2 application now gives the user the ability to select reports by "primary diagnosis" or "all" diagnosis. If the "primary diagnosis" option is selected, the reports will contain counts for those patient level encounters that documented the selected ICD9 code set as the primary (main) reason for seeking medical care. If the "all" diagnosis option is selected, the reports will contain counts for any occurrence of that specific ICD9 code whether it's considered primary or not. Selecting the "all" diagnosis may result in duplicated counts.

The report years are based upon the standard federal government "fiscal" year of October 1st through September 30th.

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