OASIS-E Effective Date 1/1/23 - Based on M0090

OASIS-E Effective Date 1/1/23 - Based on M0090

Per CMS: Please note that the effective date for OASIS-E is January 1, 2023. The version of OASIS that should be collected will be based on the M0090 – Date Assessment Completed. The M0090 date is the last date that information used to complete the comprehensive assessment and determine OASIS coding was gathered by the assessing clinician and documentation of the specific responses was completed.

CMS wants to make clear that with this transition to OASIS-E, there is no need for the use of artificial M0090 dates. All assessments with a M0090 - Date Assessment Completed on or before December 31, 2022, including the last 5 days of 2022 must be completed with OASIS-D1. This is true even when the first day of the new certification period is on or after January 1, 2023.

All assessments with a M0090 - Date Assessment Completed on or after January 1, 2023, must be completed with OASIS-E. This is true even when the assessment was initiated in 2022.