R4 Draft for Comment

This page is part of the FHIR Specification (v3.2.0: R4 Ballot 1). 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

4.2.12.10 Code System http://hl7.org/fhir/special-values

Vocabulary

Work Group

Maturity Level: 0

Informative

Use Context: Any

This is a code system defined by the FHIR project.

Summary

Defining URL:

http://hl7.org/fhir/special-values

Name:

SpecialValues

Definition:

A set of generally useful codes defined so they can be included in value sets.

Committee:

??

OID:

2.16.840.1.113883.4.642.1.10 (for OID based terminology systems)

Source Resource

XML / JSON

This Code system is used in the following value sets:

SpecialValues (A set of generally useful codes defined so they can be included in value sets.)

4.2.12.10.1 Content

4.2.12.10.2 SpecialValues

A set of generally useful codes defined so they can be included in value sets.

This code system http://hl7.org/fhir/special-values defines the following codes:

Code	Display	Definition	Comments
true	true	Boolean true.
false	false	Boolean false.
trace	Trace Amount Detected	The content is greater than zero, but too small to be quantified.
sufficient	Sufficient Quantity	The specific quantity is not known, but is known to be non-zero and is not specified because it makes up the bulk of the material.	used in formulations (e.g. 'Add 10mg of ingredient X, 50mg of ingredient Y, and sufficient quantity of water to 100mL.' This code would be used to express the quantity of water. )
withdrawn	Value Withdrawn	The value is no longer available.
nil-known	Nil Known	The are no known applicable values in this context.	The existence of this subject to review

See the full registry of value sets defined as part of FHIR.

Explanation of the columns that may appear on this page:

Lvl

A few code lists that FHIR defines are hierarchical - each code is assigned a level. See Code System for further information.

Source

The source of the definition of the code (when the value set draws in codes defined elsewhere)

Code

The code (used as the code in the resource instance). If the code is in italics, this indicates that the code is not selectable ('Abstract')

Display

The display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application

Definition

An explanation of the meaning of the concept

Comments

Additional notes about how to use the code