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Release Notes:
Data Element
Version 2010A1

Data Element Name: Date Last Known Well
Collected For: ,
Definition:The date at which the patient was last known to be without the signs and symptoms of the current stroke or at his or her prior baseline.
Suggested Data Collection Question:What was the date at which the patient was last known to be well or at his or her baseline?
Allowable Values:

MM = Month (01 12)
DD = Day (01 31)
YYYY = Year (2000 9999)

Notes for Abstraction:For patients with a witnessed onset of symptoms, the date of last known well and the date of symptom discovery will be the same.
Suggested Data Sources:
  • Emergency department record
  • History and physical
  • Progress notes
Additional Notes:
Guidelines for Abstraction:
Inclusion Exclusion
  • None
  • None

Date Last Known Well
Specifications Manual for Joint Commission National Quality Core Measures (2010A1)
Discharges 04-01-10 (2Q10) through 09-30-10 (3Q10)