ConformanceExpectation
Indicates the degree of adherence to a specified behavior or capability expected in order for a system to be deemed conformant with a specification.
This code system http://hl7.org/fhir/conformance-expectation defines the following codes:
| Code | Display | Definition |
| SHALL | SHALL | Support for the specified capability is required to be considered conformant. |
| SHOULD | SHOULD | Support for the specified capability is strongly encouraged and failure to support it should only occur after careful consideration. |
| MAY | MAY | Support for the specified capability is not necessary to be considered conformant and the requirement should be considered strictly optional. |
| SHOULD-NOT | SHOULD-NOT | Support for the specified capability is strongly discouraged and should occur only after careful consideration. |