description:
A code indicating whether the Act statement as a whole, with its subordinate components
has been asserted to be uncertain in any way.
Examples: Patient might have had a cholecystectomy procedure in the past (but isn't sure).
Constraints: Uncertainty asserted using this attribute applies to the combined meaning of the
Act statement established by all descriptive attributes (e.g., Act.code, Act.effectiveTime,
Observation.value, SubstanceAdministration.doseQuantity, etc.), and the meanings of
any components.
Discussion: This is not intended for use to replace or compete with uncertainty associated with
a Observation.values alone or other individual attributes of the class. Such pointed
indications of uncertainty should be specified by applying the PPD, UVP or UVN data
type extensions to the specific attribute. Particularly if the uncertainty is uncertainty
of a quantitative
measurement value, this must still be represented by a PPD<PQ> in the value and NOT
using the uncertaintyCode. Also, when differential diagnoses are enumerated or weighed
for probability, the UVP<CD> or UVN<CD> must be used, not the uncertaintyCode. The
use of the uncertaintyCode is appropriate only if the entirety of the Act and its
dependent Acts is
questioned.
Note that very vague uncertainty may be thought related to negationInd, however, the
two concepts are really independent. One may be very uncertain about an event, but
that does not mean that one is certain about the negation of the event.