<Observation xmlns="http://hl7.org/fhir"> <id value="BP10001" /> <identifier> <use value="usual" /> <type> <coding> <system value="http://terminology.hl7.org/CodeSystem/v2-0203" /> <code value="U" /> <display value="source system ID" /> </coding> </type> <system value="http://mco.smarthealth.org" /> <value value="CN12345678O" /> <period> <start value="2001-05-06" /> </period> </identifier> <status value="final" /> <code> <coding> <system value="http://loinc.org" /> <code value="8462-4" /> <display value="Diastolic blood pressure" /> </coding> <text value="Blood pressure diastolic" /> </code> <subject> <reference value="PatientNYC1001" /> <display value="Sample member" /> </subject> <encounter> <reference value="encounter 200020" /> </encounter> <effectiveDateTime value="2022-04-05" /> <performer> <reference value="AZ10003" /> <display value="Dr. Alex Tan" /> </performer> <valueQuantity> <value value="80" /> <unit value="mmHg" /> <system value="http://unitsofmeasure.org" /> <code value="mm[Hg]" /> </valueQuantity> </Observation>