# text.div
Generated Narrative: CodeSystem v3-RelationshipConjunction

Language: en

Properties

This code system defines the following properties for its concepts

Name | Code | URI | Type | Description
Status | status | http://hl7.org/fhir/concept-properties#status | code | Designation of a concept's state. Normally is not populated unless the state is retired.

Concepts

This case-sensitive code system http://terminology.hl7.org/CodeSystem/v3-RelationshipConjunction defines the following codes in a Is-A hierarchy:

Code | Display | Definition | Status
AND | and | This condition must be true. | active
OR | or | At least one of the condition among all OR conditions must be true. | active
XOR | exclusive or | One and only one of the XOR conditions must be true. | active

# description
A code specifying the logical conjunction of the criteria among all the condition-links of Acts (e.g., and, or, exclusive-or.)

*Constraints:* All AND criteria must be true. If OR and AND criteria occur together, one criterion out of the OR-group must be true and all AND criteria must be true also. If XOR criteria occur together with OR and AND criteria, exactly one of the XOR criteria must be true, and at least one of the OR criteria and all AND criteria must be true. In other words, the sets of AND, OR, and XOR criteria are in turn combined by a logical AND operator (all AND criteria and at least one OR criterion and exactly one XOR criterion.) To overcome this ordering, Act criteria can be nested in any way necessary.

# copyright
This material derives from the HL7 Terminology THO. THO is copyright ©1989+ Health Level Seven International and is made available under the CC0 designation. For more licensing information see: https://terminology.hl7.org/license.html

# property[].description
Designation of a concept's state. Normally is not populated unless the state is retired.

# concept[].definition
At least one of the condition among all OR conditions must be true.

# concept[].definition
One and only one of the XOR conditions must be true.