<status value="active" /> <date value="2022-08-01" /> <description value="VA PGHD Observation base profile defining the common constraints for all PGHD observations. For example, the status is set to 'final'." /> <purpose value="This is the PGHD observation base profile defining the common constraints for all PGHD observation profiles. Other PGHD observation profiles should derive from this base profile." /> <fhirVersion value="4.0.1" /> <kind value="resource" /> <abstract value="false" /> <type value="Observation" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Observation" /> <derivation value="constraint" /> <differential> <element id="Observation"> <path value="Observation" /> <short value="PGHD Governance Rules for Observations" /> <constraint> <key value="pghd-meta-tag-1" /> <severity value="error" /> <human value="An observation must have exactly one meta tag, with system = 'https://wiki.mobilehealth.va.gov/x/Onc1C', a code, and a display value" /> <expression value="meta.tag.count() = 1 and meta.tag.exists(system = 'https://wiki.mobilehealth.va.gov/x/Onc1C' and code.exists() and display.exists())" /> </constraint> <constraint> <key value="pghd-observation-status-1" /> <severity value="error" /> <human value="Observation status must be 'final'" /> <expression value="status = 'final'" /> </constraint> <constraint> <key value="pghd-observation-codesystem-1" /> <severity value="warning" /> <human value="CodeSystem url https://mobile.va.gov/fhir/codesystem/pghd is deprecated; use https://connectedcare.va.gov/pghd/code-system-v1.1 instead" /> <expression value="(category.coding.exists(system = 'https://mobile.va.gov/fhir/codesystem/pghd') or code.coding.exists(system = 'https://mobile.va.gov/fhir/codesystem/pghd') or component.code.coding.exists(system = 'https://mobile.va.gov/fhir/codesystem/pghd')).not()" /> </constraint> </element> </differential> </StructureDefinition>