Exception generating Narrative: Unable to Parse HTML - node 'code' has unexpected content ' ' (last text = 'library CHF version '1.0.0' using FHIR version '4.0.1' include FHIRHelpers version '4.0.1' codesystem "SNOMED-CT": 'http://snomed.info/sct' codesystem "LOINC": 'http://loinc.org' codesystem "CHFCodes": 'http://hl7.org/fhir/uv/cpg/CodeSystem/chf-codes' codesystem "Condition Clinical Status Code": 'http://terminology.hl7.org/CodeSystem/condition-clinical' codesystem "Condition Verification Status Code": 'http://terminology.hl7.org/CodeSystem/condition-ver-status' code "Congestive heart failure": '42343007' from "SNOMED-CT" code "Body weight": '29463-7' from "LOINC" code "Body weight change": 'body-weight-change' from "CHFCodes" code "Urine output": '9192-6' from "LOINC" code "Net intake/output": 'net-intake-output' from "CHFCodes" code "Jugular venous pressure": 'jvp' from "CHFCodes" code "Oxygen saturation": '2708-6' from "LOINC" code "Potassium goal": '86919-8' from "LOINC" display 'Potassium goal [Moles/volume] Serum or Plasma' // meq/L code "Creatinine in serum": '39802-4' from "LOINC" display 'Creatinine in serum or plasma' // NOTE: example shows mg/dL, but no LOINC code has those units? code "eGFR result": 'egfr' from "CHFCodes" // NOTE: Too many to pick from, needs clinical/terminological SME input, in mol/mm/m2 code "Active condition": 'active' from "Condition Clinical Status Code" code "Provisional condition": 'provisional' from "Condition Verification Status Code" code "Confirmed condition": 'confirmed' from "Condition Verification Status Code" parameter Encounter Encounter context Patient // Case Features define "Body Weight": [Observation: "Body weight"] O where O.status = 'final' and references(O.encounter, Encounter) define "Body Weight Change Assertion": [Observation: "Body weight change"] O where O.status = 'final' and references(O.encounter, Encounter) define "Body Weight Change": "Daily Body Weight Change" WC return Observation { id: id { value: Encounter.id + '-bodyweight-change' + ToString(WC.date) }, extension: { Extension { url: url { value: 'http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-instantiatesCaseFeature' }, value: canonical { value: 'http://hl7.org/fhir/uv/cpg/StructureDefinition/chf-bodyweight-change' } }, Extension { url: url { value: 'http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-caseFeatureType' }, value: code { value: 'asserted' } } }, status: ObservationStatus { value: 'final' }, code: CodeableConcept { coding: { Coding { system: uri { value: 'http://hl7.org/fhir/uv/cpg/CodeSystem/chf-codes' }, code: code { value: 'body-weight-change' } } } }, effective: dateTime { value: WC.date }, issued: instant { value: Now() }, subject: referenceTo(Patient), encounter: referenceTo(Encounter), value: Quantity { value: decimal { value: WC.change.value }, unit: string { value: WC.change.unit }, system: uri { value: 'http://unitsofmeasure.org' }, code: code { value: WC.change.unit } } } define "Daily Body Weight": (expand Encounter.period per day) Date let maxWeight: Max("Body Weight" WT where WT.issued same day as Date return WT.value as FHIR.Quantity) return { date: Date, weight: maxWeight } define "Daily Body Weight Change": "Daily Body Weight" WT let priorWeight: First("Daily Body Weight" PWT where PWT.date ' at line 1035 column 69