# text.div
This code system http://hl7.org/fhir/reference-version-rules defines the following codes:

Code | Display | Definition
either | Either Specific or independent | The reference may be either version independent or version specific.
independent | Version independent | The reference must be version independent.
specific | Version Specific | The reference must be version specific.

# description
Whether a reference needs to be version specific or version independent, or whether either can be used.

# concept[].definition
The reference may be either version independent or version specific.

# concept[].definition
The reference must be version independent.