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ECDA Components

Since the direct mapping of CDA (particularly, CCD) data to other formats may become a complex and error-prone process, an intermediate Edifecs CDA (ECDA) format together with XEServer ECDA components have been introduced to facilitate the CDA data handling.

ECDA is a proprietary XML-based format developed by Edifecs. The primary purpose of this format is to act as an intermediate data format during the conversion of CDA documents. Creating a custom map (.ems) to transform ECDA data is much easier than creating one for raw CCD data as the ECDA format has been specially adopted for this purpose. The ECDA format is:

  • fully compliant with the CDA format. An ECDA file is a valid CDA document,
  • a reduced version of CDA. ECDA supports the mandatory and the most frequently used CDA sections,
  • a flat-hierarchy XML document .Unlike CDA documents where sections are heavily nested, all ECDA sections reside just under the root level which simplifies the conversion rules.

The ECDA format may contain the following sections:

  • Patient
  • Practitioner
  • Organization
  • AllergySection
  • MedicationsSection
  • ProblemSection
  • ProcedureSection
  • ResultsSection
  • AdvanceDirectivesSection
  • EncountersSection
  • FamilyHistorySection
  • FunctionalStatusSection
  • ImmunizationsSection
  • PlanOfCareSection
  • SocialHistorySection
  • MedicalHistory
  • VitalSignsSection
  • InstructionsSection
ClosedClick here to see the sample ECDA document

<?xml version="1.0" encoding="UTF-8"?>

<ECDA xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

<Patient>

<dob>19670129</dob>

<lastName>West</lastName>

<firstName>Anna</firstName>

<address>

<addressLine>2777 Terra Street</addressLine>

<city>Seattle</city>

<postal>98109</postal>

</address>

<gender>female</gender>

</Patient>

<Practitioner>

<lastName>Stevenson</lastName>

<firstName>Thomas</firstName>

<address>

<addressLine>1222 Glendale Road</addressLine>

<city>1222 Glendale Road</city>

<postal>48824</postal>

</address>

</Practitioner>

<AllergySection>

<Allergy>

<type>

<coding>

<code>414285001</code>

<display>food allergy</display>

<system>SNOMED CT</system>

</coding>

</type>

<status>

<coding>

<code>55561003</code>

<display>Active</display>

<system>SNOMED CT</system>

</coding>

</status>

</Allergy>

</AllergySection>

<ProblemSection>

<Problem>

<type>

<coding>

<code>39065001</code>

<display>Burn of ear</display>

<system>http://snomed.info/sct</system>

</coding>

</type>

<status>

<coding>

<code>55561003</code>

<display>Active</display>

<system>SNOMED CT</system>

</coding>

</status>

</Problem>

</ProblemSection>

<ProcedureSection>

<Procedure>

<date>

<dateTime>20160110</dateTime>

</date>

<type>

<coding>

<code>93790</code>

<display>Ambulatory blood pressure monitoring</display>

<system>C4</system>

</coding>

</type>

</Procedure>

</ProcedureSection>

<ObservationsSection>

<Observation>

<id>39156-5</id>

<category>39156-5</category>

<type>

<coding>

<code>39156-5</code>

<display>Body mass index (BMI) [Ratio]</display>

</coding>

</type>

<date>

<dateTime>20160110</dateTime>

</date>

<value>

<simpleValue>28 kg/m3</simpleValue>

</value>

<component>

<type>

<coding>

<code>final</code>

</coding>

</type>

</component>

</Observation>

</ObservationsSection>

<MedicationsSection>

<Medication>

<date>

<dateTimePeriod>

<low>20180120</low>

</dateTimePeriod>

</date>

<type>

<coding>

<code>202363</code>

<display>Xanax</display>

<system>http://www.nlm.nih.gov/research/umls/rxnorm</system>

</coding>

</type>

<route>

<coding>

<code>26643006</code>

<display>Oral route (qualifier value)</display>

<system>http://snomed.info/sct</system>

</coding>

</route>

<dosage>

<quantity>

<val>1.0</val>

<unit>mg</unit>

</quantity>

</dosage>

</Medication>

</MedicationsSection>

<ResultsSection>

<Result>

<type>

<coding>

<code>104177005</code>

<display>Blood pressure</display>

<system>http://snomed.info/sct</system>

</coding>

</type>

<date>

<dateTime>20050127</dateTime>

</date>

<resultObservations>

<observationId>Observation/blood-pressure</observationId>

</resultObservations>

</Result>

</ResultsSection>

</ECDA>

XEServer has two components that allow you to convert CCD data to ECDA (and in the reverse). The components become available after you install XES Module for FHIR 9.2.

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