Global ext-1: Must have either extensions or value[x], not both ext-1: Must have either extensions or value[x], not both Global 1 global-1: All FHIR elements must have a @value or children DeviceUseStatement dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources dom-1: If the resource is contained in another resource, it SHALL NOT contain any narrative dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource txt-1: The narrative SHALL contain only the basic html formatting elements and attributes described in chapters 7-11 (except section 4 of chapter 9) and 15 of the HTML 4.0 standard, <a> elements (either name or href), images and internally contained style attributes txt-2: The narrative SHALL have some non-whitespace content per-1: If present, start SHALL have a lower value than end ref-1: SHALL have a contained resource if a local reference is provided ref-1: SHALL have a contained resource if a local reference is provided per-1: If present, start SHALL have a lower value than end ref-1: SHALL have a contained resource if a local reference is provided per-1: If present, start SHALL have a lower value than end tim-9: If there's an offset, there must be a when (and not C, CM, CD, CV) tim-5: period SHALL be a non-negative value tim-6: If there's a periodMax, there must be a period tim-7: If there's a durationMax, there must be a duration tim-8: If there's a countMax, there must be a count tim-1: if there's a duration, there needs to be duration units tim-10: If there's a timeOfDay, there cannot be be a when, or vice versa tim-2: if there's a period, there needs to be period units tim-4: duration SHALL be a non-negative value drt-1: There SHALL be a code if there is a value and it SHALL be an expression of time. If system is present, it SHALL be UCUM. rng-2: If present, low SHALL have a lower value than high qty-3: If a code for the unit is present, the system SHALL also be present qty-3: If a code for the unit is present, the system SHALL also be present per-1: If present, start SHALL have a lower value than end per-1: If present, start SHALL have a lower value than end ref-1: SHALL have a contained resource if a local reference is provided per-1: If present, start SHALL have a lower value than end ref-1: SHALL have a contained resource if a local reference is provided ref-1: SHALL have a contained resource if a local reference is provided per-1: If present, start SHALL have a lower value than end ref-1: SHALL have a contained resource if a local reference is provided ref-1: SHALL have a contained resource if a local reference is provided per-1: If present, start SHALL have a lower value than end ref-1: SHALL have a contained resource if a local reference is provided