DSTU2

This page is part of the FHIR Specification (v1.0.2: DSTU 2). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R4B R4 R3 R2

Extension NI | OTH | NINF | PINF | UNK | ASKU | NAV | NASK | TRC | MSK | NA | QS - Detailed Descriptions

Detailed Descriptions for the elements in the extension.

Extension
Definition

If the value is not a proper value, indicates the reason.

Control0..1
TypeExtension
Comments

Considerable care must be used when using nullFlavor in this context of FHIR - more than any other concept, this is tied to the way v3 works, and FHIR is quite different. For instance, there is no notion of a "proper value" as opposed to any other value in FHIR. a NullFlavor should be understood to mean, "why information is missing", and the nulFlavors OTH, NINF, PINF, and TRC should not be used.

Extension.id
Definition

unique id for the element within a resource (for internal references).

Control0..1
Typeid
Extension.extension(extension)
Definition

An Extension

Control0..0
TypeExtension
Extension.url
Definition

Source of the definition for the extension code - a logical name or a URL.

Control1..1
Typeuri
Comments

The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition should be version specific. This will ideally be the URI for the Resource Profile defining the extension, with the code for the extension after a #.

Fixed Valuehttp://hl7.org/fhir/StructureDefinition/iso21090-nullFlavor
Extension.valueCode
Definition

Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).

Control1..1
BindingA collection of codes specifying why a valid value is not present
The codes SHALL be taken from v3 Code System NullFlavor
Typecode