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Various sections and entries in CCDA documents contain
effectiveTime elements which indicate the date and/or times of occurrences of certain activities. These activities may include:
Depending on the type of activity, the
effectiveTime can be documented as a single date/time value or an interval with a start date and an optional end date.
It should be populated with a date in the following format:
+/-ZZZZ specifies the offset from Coordinated Universal Time (UTC).
Documenting effective time as a single value is appropriate for activities that only require a specific date/time. For example, the date and time when a particular diagnosis was recorded.
Documenting effective time as an interval with a start date and an end date is appropriate for activities that occurred over a period of time or is still occurring. For example, an ongoing encounter between a patient and clinician.
effectiveTime element must have an attribute
xsi:type with the value
low value (start date/time) is typically required to indicate the start of the interval, while the
high value (end date/time) is optional. If no high value is given, this indicates that the activity has not finished or is ongoing.
If the effective time information is missing, a
nullFlavor attribute should be present instead. Information may be missing because it was not captured and stored etc.
nullFlavor can be used for single value instances:
Or for intervals:
nullFlavor attributes may use the following values:
|ASKU||Asked but unknown|
|MSK||Masked (for sensitivity of confidentiality reasons)|