["Diagnostic Study, Performed": "CT dose and image quality category"]

Data elements that meet criteria using this datatype should document the completion of the diagnostic study indicated by the QDM category and its corresponding value set.

Timing:

• relevant dateTime references the time the diagnostic study is performed if it occurs at a single point in time.
• relevantPeriod references a start and stop time for an assessment that occurs over a time interval:
  • startTime - when the diagnostic study is initiated.
  • stopTime - when the diagnostic study is completed.
• author dateTime references the time the action was recorded.
• Refer to the eCQM expression to determine allowable timings to meet measure criterion.

Examples using relevantPeriod:

• Initiation of a treadmill stress test to the time the treadmill stress test has completed
• Initiation of the ultrasound study until completion of the ultrasound study

Note: negation rationale indicates a one-time documentation of a reason an activity is not performed. Negation of QDM datatype-related actions for a reason always use the author dateTime attribute to reference timing and must not use relevantPeriod.