# text.div
This code system http://hl7.org/fhir/conformance-expectation defines the following codes:

Code | Definition
SHALL | Support for the specified capability is required to be considered conformant.
SHOULD | Support for the specified capability is strongly encouraged, and failure to support it should only occur after careful consideration.
MAY | Support for the specified capability is not necessary to be considered conformant, and the requirement should be considered strictly optional.
SHOULD-NOT | Support for the specified capability is strongly discouraged and should occur only after careful consideration.

# concept[].definition
Support for the specified capability is required to be considered conformant.

# concept[].definition
Support for the specified capability is strongly encouraged, and failure to support it should only occur after careful consideration.

# concept[].definition
Support for the specified capability is not necessary to be considered conformant, and the requirement should be considered strictly optional.

# concept[].definition
Support for the specified capability is strongly discouraged and should occur only after careful consideration.