http://hl7.org/fhir/StructureDefinition/questionnaire-constraint|4.0.1

An invariant that must be satisfied before responses to the questionnaire can be considered \"complete\".

Name	Card	Type	Description & Constraints
Extension	0..*		Constraint
extension *	1..1	Extension	Unique identifier
extension	?..0
url	?..?	uri
value[x] *	1..?
valueId *	1..?	id
extension	0..1	Extension	Why needed
extension	?..0
url	?..?	uri
value[x] *	1..?
valueString *	1..?	string
extension *	1..1	Extension	error\|warning
extension	?..0
url	?..?	uri
value[x] *	1..?		ConstraintSeverity (required)
valueCode *	1..?	code	ConstraintSeverity (required)
extension *	1..1	Extension	Formal rule
extension	?..0
url	?..?	uri
value[x] *	1..?
valueString *	1..?	string
extension *	1..1	Extension	Human-readable rule
extension	?..0
url	?..?	uri
value[x] *	1..?
valueString *	1..?	string
extension	0..*	Extension	Relative path to elements
extension	?..0
url	?..?	uri
value[x] *	1..?
valueString *	1..?	string
url	?..?
value[x]	0..0