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Data Specifications

OASIS Data Specifications V2.11.3 and Errata Document

OASIS Data Submission Specifications Version 2.11.3 is now available in the downloads section below.  This new version applies to the OASIS-C1/ICD-9 item set which is scheduled for implementation on January 1, 2015.  Version 2.10.1 of the data specifications, which was previously posted and which applies to OASIS-C, is also scheduled for implementation on January 1, 2015.
In addition to the data submission specifications, a new version of the Errata document for versions 2.10 and 2.11 of the data specifications is also available in the downloads section below.  Please note the following important information regarding the errata document:
     • Three errata issues (A53, A54, and A55) were identified after V2.11.3 of the OASIS-C1/ICD-9 data specifications was put into production.  These three issues have not been implemented in V2.11.3 of the data specifications.  Users of the data specs must treat the resolutions of these three issues as part of the V2.10 and V2.11 data submission specifications.
     • No further updates are planned for V2.10 of the OASIS-C data specs; V2.10.1 is therefore the last release planned for OASIS-C. The issue resolutions listed in Sections A and B of the Errata document have not been implemented in V2.10.1 of the data specifications. Users of the OASIS-C data specs must treat the resolutions of all of the issues listed in Sections A and B as part of the V2.10 data submission specifications.

Final OASIS-C Data Specifications Version 2.00

A final version of the OASIS-C Data Specifications Version 2.00 is now available.  This version is a revision to the initial draft published in July, 2009.  The primary purpose of Version 2.00 is to incorporate changes associated with the OASIS-C data set that Home Health Agencies (HHAs) are required to collect in order to participate in the Medicare program.

The final OASIS-C instrument is on the OASIS-C website (see Related Links Inside CMS).

In the download section below, you will find the final OASIS-C Version 2.00 data specifications in four different formats (PDF, Excel, Access and HTML) and a three-column crosswalk document of OASIS-B1 items to OASIS-C items.  Please note that the HTML version of the OASIS-C data specifications provide sort order of submission and logical orders.

Correction 3: Data Submission Specifications Version 2.00

An initial draft version of Version 2.00 of the OASIS-C data specifications was published in July, 2009. Revision 1 contained several corrections to the original draft and was published at the beginning of August, 2009. The current version is a third revision and corrects several additional errors in the earlier versions. Please refer to BC200R3.PDF for a list of corrections that have been made. Changes are also noted in the “version notes” field of the detailed data specifications report. Changes associated with Revision 1 are designated with “[R1]” before the description of the change, while changes associated with Revision 2 are designated with “[R2]”. Changes associated with the current revision (Revision 3) are designated with “[R3]”.

ERRATA SHEET: Data Submission Specifications Version 2.00

Please include this errata sheet with the current OASIS-C Version 2.00 Data Specifications.  This document is intended to communicate the minimal changes that have been made since the posting of REVISON 3 of the OASIS-C Version 2.00 Data Specifications.  The current OASIS-C Version 2.00 Data Specifications will be updated and posted in its entirety at a future date.  See Downloads below for details on the Errata Sheet.