This is the set of resources that conform to either of the profiles Null flavor (http://hl7.org/fhir/StructureDefinition/iso21090-nullFlavor) and Null flavor (http://hl7.org/fhir/StructureDefinition/iso21090-nullFlavor). E.g. what you have to deal with if you get resources conforming to one of them
| Name | Flags | Card. | Type | Description & Constraints |
|---|---|---|---|---|
  Extension | 0..1 | NI | OTH | NINF | PINF | UNK | ASKU | NAV | NASK | TRC | MSK | NA | QS ele-1: All FHIR elements must have a @value or children ext-1: Must have either extensions or value[x], not both | ||
  url | 1..1 | uri | identifies the meaning of the extension | |
 value[x] | 1..1 | code | Value of extension Binding: ?? (required) ele-1: All FHIR elements must have a @value or children | |
| Documentation for this format | ||||