http://hl7.org/fhir/StructureDefinition/servicerequest-precondition|5.2.0

The condition or state of the patient, prior or during the diagnostic procedure or test, for example, fasting, at-rest, or post-operative. This captures circumstances that may influence the measured value and have bearing on the interpretation of the result.
NameFlagsCardTypeDescription & Constraints
Extension
0..*The condition or state of the patient for this test
 
extension
?..0
 
url
?..?
 
value[x] *
1..?
 
 
valueCodeableConcept *
1..?CodeableConcept