OASIS · Section M
M0090 — Date Assessment Completed
Response options, how to score it, and the error that most often sends the record back. Cited to Ch. 1, Item M0090.
OASIS-E2 v1.00.0 · ingested 2026-04-26
How to score it
Enter the date the clinician completed the comprehensive assessment. This date becomes the M0090 date that drives the 5-day completion window and the 30-day iQIES transmission deadline. It must fall within the required timepoint window for the RFA.
The common error
Recording M0090 as the SOC date when the assessment was not completed until later — or vice versa. M0090 is the completion date, not the visit date.
CMS Q&As on this item
M00906
- Q17 If an HHA’s policy requires personnel knowledgeable of ICD-10-CM coding to complete the diagnosis after the…
- Q18 Should the date in M0090 - Date Assessment Completed, reflect the date that a supervisor completed a review…
- Q19 A provider has decided to complete discharge assessments for all patients when payers change because they…
- Q19.2 I understand that M0090 - Date Assessment Completed, is the day the last information needed to complete the…
- Q19.3 Should the M0090 - Date Assessment Completed date be changed when a correction is made after a clinician has…
- Q19.5 I am not sure how to complete M0090 when it is a therapy only case and the RN in the office performs the…
Source: OASIS-E2 Guidance Manual — Ch. 1, Item M0090. Verified 2026-04-26.
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