Medplum

// SPDX-FileCopyrightText: Copyright Orangebot, Inc. and Medplum contributors // SPDX-License-Identifier: Apache-2.0 import type { CodeableConcept, DosageDoseAndRate, MedicationRequest } from '@medplum/fhirtypes'; import { OID_LOINC_CODE_SYSTEM, OID_MEDICATION_ACTIVITY, OID_MEDICATION_FREE_TEXT_SIG, OID_MEDICATION_INFORMATION_MANUFACTURED_MATERIAL, } from '../../oids'; import { LOINC_MEDICATION_INSTRUCTIONS, mapCodeableConceptToCcdaCode, MEDICATION_STATUS_MAPPER } from '../../systems'; import type { CcdaCode, CcdaEffectiveTime, CcdaEntry, CcdaQuantity } from '../../types'; import type { FhirToCcdaConverter } from '../convert'; import { createTextFromExtensions, mapEffectiveDate, mapIdentifiers } from '../utils'; /** * Create the C-CDA medication entry for the FHIR medication. * @param converter - The FHIR to C-CDA converter. * @param med - The FHIR medication to create the C-CDA medication entry for. * @returns The C-CDA medication entry. */ export function createMedicationEntry(converter: FhirToCcdaConverter, med: MedicationRequest): CcdaEntry { // Get medication details either from contained resource or inline concept const medication = med.contained?.find((r) => r.resourceType === 'Medication'); const medicationCode = medication?.code || med.medicationCodeableConcept; const manufacturer = medication?.manufacturer; const effectiveTime: CcdaEffectiveTime[] = []; if (med.dispenseRequest?.validityPeriod) { const mapped = mapEffectiveDate(undefined, med.dispenseRequest.validityPeriod); if (mapped) { effectiveTime.push(...mapped); } } if (med.dosageInstruction?.[0]?.timing?.repeat?.period) { effectiveTime.push({ '@_xsi:type': 'PIVL_TS', '@_institutionSpecified': 'true', '@_operator': 'A', period: { '@_value': med.dosageInstruction[0].timing.repeat.period.toString(), '@_unit': med.dosageInstruction[0].timing.repeat.periodUnit, }, }); } return { substanceAdministration: [ { '@_classCode': 'SBADM', '@_moodCode': 'EVN', templateId: [ { '@_root': OID_MEDICATION_ACTIVITY, '@_extension': '2014-06-09' }, { '@_root': OID_MEDICATION_ACTIVITY }, ], id: [{ '@_root': med.id || crypto.randomUUID() }], text: createTextFromExtensions(med.extension), statusCode: { '@_code': MEDICATION_STATUS_MAPPER.mapFhirToCcdaWithDefault(med.status, 'active') }, effectiveTime, routeCode: mapMedicationRoute(med.dosageInstruction?.[0]?.route), doseQuantity: mapDoseQuantity(med.dosageInstruction?.[0]?.doseAndRate?.[0]), consumable: { '@_typeCode': 'CSM', manufacturedProduct: [ { '@_classCode': 'MANU', templateId: [ { '@_root': OID_MEDICATION_INFORMATION_MANUFACTURED_MATERIAL, '@_extension': '2014-06-09' }, { '@_root': OID_MEDICATION_INFORMATION_MANUFACTURED_MATERIAL }, ], manufacturedMaterial: [ { code: [ { ...(mapCodeableConceptToCcdaCode(medicationCode) as CcdaCode), originalText: createTextFromExtensions(medication?.extension), }, ], }, ], manufacturerOrganization: manufacturer ? [ { id: mapIdentifiers( manufacturer.id, manufacturer.identifier ? [manufacturer.identifier] : undefined ), name: [manufacturer.display as string], }, ] : undefined, }, ], }, author: converter.mapAuthor(med.requester, med.authoredOn), entryRelationship: med.dosageInstruction ?.filter((instr) => !!instr.extension) ?.map((instr) => ({ '@_typeCode': 'COMP', substanceAdministration: [ { '@_classCode': 'SBADM', '@_moodCode': 'EVN', templateId: [{ '@_root': OID_MEDICATION_FREE_TEXT_SIG }], code: { '@_code': LOINC_MEDICATION_INSTRUCTIONS, '@_codeSystem': OID_LOINC_CODE_SYSTEM, '@_codeSystemName': 'LOINC', '@_displayName': 'Medication Instructions', }, text: createTextFromExtensions(instr.extension), consumable: { manufacturedProduct: [ { manufacturedLabeledDrug: [ { '@_nullFlavor': 'NA', }, ], }, ], }, }, ], })), }, ], }; } /** * Map the FHIR medication route to the C-CDA medication route. * @param route - The route to map. * @returns The C-CDA medication route. */ function mapMedicationRoute(route: CodeableConcept | undefined): CcdaCode | undefined { if (!route) { return undefined; } return mapCodeableConceptToCcdaCode(route); } /** * Map the FHIR dose quantity to the C-CDA dose quantity. * @param doseAndRate - The dose and rate to map. * @returns The C-CDA dose quantity. */ function mapDoseQuantity(doseAndRate: DosageDoseAndRate | undefined): CcdaQuantity | undefined { if (!doseAndRate?.doseQuantity) { return undefined; } return { '@_value': doseAndRate.doseQuantity.value?.toString(), '@_unit': doseAndRate.doseQuantity.unit, }; }