Add the CDA body

Now we need to create the body for our CDA document and append it underneath our header. Our CDA body section will be composed of a ‘component‘ element that contains a ‘structuredBody’ sub-element.

1. Add the following lines of code to the main() function:

That’s it! Your shiny new CDA body should look like this in the resulting annotations:

Here is a copy-and-paste version of the entire main() function, should you need it:

function main(Data)
   local Doc = cda.new()
   local CD = Doc.ClinicalDocument

   -- CDA Header 
   FillHeader(CD)
   local RT = CD:addElement('recordTarget')
   FillPatient(RT)
   local A = CD:addElement('author')
   FillAuthor(A)
   local C = CD:addElement('custodian')
   FillCustodian(C)

   -- CDA Body
   local Body = CD:addElement('component')
   local SB = Body:addElement('structuredBody')

   net.http.respond{body=tostring(Doc)}

   -- TEST CODE: write CDA to file (in Iguana install dir)
   -- unformatted xml
   if iguana.isTest() then
      local f = io.open('cda_xml.xml','w+')
      f:write(tostring(Doc))
      f:close()
      -- formatted with xsl stylesheet
      f = io.open('cda_web.xml','w+')
      f:write('\n')
      f:write(tostring(Doc))
      f:close()
   end
end

Review and Validate

Use the NIST Validation Tool (or the Lantana validation tool) to check our new changes to the cda_xml.xml file.

The confusing error message from our previous step is gone! Now the report simply confirms that our CDA body is not complete: