Code of the service event. The codes which can be used here are related to the specific CDA specification for the document type or medical domain e.g. laboratory and radiology domain.
If the code is not known the nullFlavor: UNK is allowed.
CDAdonOf
@nullFlavor
cs
0 … 1
F
UNK
hl7:effectiveTime
0 … 1
Value of the time (interval) when the act (service event) was executed. If the effectiveTime should be used to describe a point in time, the low and high attribute should have the same value.