Basic
FoundationBasic is used for handling concepts not yet defined in FHIR, narrative-only resources that don't map to an existing resource, and custom resources not appropriate for inclusion in the FHIR specification.
Basic is a FHIR R4 Foundation resource — resource for non-supported content. It defines 14 elements and supports 15 search parameters.
More Foundation resources
AuditEventBinaryBundleCapabilityStatementCatalogEntryCodeSystemCompartmentDefinitionCompositionConceptMapConsentDocumentManifestDocumentReferenceExampleScenarioGraphDefinitionImplementationGuideLinkageMessageDefinitionMessageHeaderNamingSystemOperationDefinitionOperationOutcomeParametersProvenanceSearchParameter