bluebutton/_site/lib/parsers/ccda/results.js

BlueButton.js helps developers navigate complex health data with ease.

/*
 * Parser for the CCDA results (labs) section
 */

Parsers.CCDA.results = function (ccda) {
  
  var parseDate = Documents.parseDate;
  var parseName = Documents.parseName;
  var parseAddress = Documents.parseAddress;
  var data = [], el;
  
  var results = ccda.section('results');
  
  results.entries().each(function(entry) {
    
    // panel
    el = entry.tag('code');
    var panel_name = el.attr('displayName'),
        panel_code = el.attr('code'),
        panel_code_system = el.attr('codeSystem'),
        panel_code_system_name = el.attr('codeSystemName');
    
    var observation;
    var tests = entry.elsByTag('component');
    var tests_data = [];
    
    for (var i = 0; i < tests.length; i++) {
      observation = tests[i];
      
      var date = parseDate(observation.tag('effectiveTime').attr('value'));
      
      el = observation.tag('code');
      var name = el.attr('displayName'),
          code = el.attr('code'),
          code_system = el.attr('codeSystem'),
          code_system_name = el.attr('codeSystemName');
      
      el = observation.tag('value');
      var value = parseFloat(el.attr('value')),
          unit = el.attr('unit');
      
      el = observation.tag('referenceRange');
      var reference_range_text = Core.stripWhitespace(el.tag('observationRange').tag('text').val()),
          reference_range_low_unit = el.tag('observationRange').tag('low').attr('unit'),
          reference_range_low_value = el.tag('observationRange').tag('low').attr('value'),
          reference_range_high_unit = el.tag('observationRange').tag('high').attr('unit'),
          reference_range_high_value = el.tag('observationRange').tag('high').attr('value');
      
      tests_data.push({
        date: date,
        name: name,
        value: value,
        unit: unit,
        code: code,
        code_system: code_system,
        code_system_name: code_system_name,
        reference_range: {
          text: reference_range_text,
          low_unit: reference_range_low_unit,
          low_value: reference_range_low_value,
          high_unit: reference_range_high_unit,
          high_value: reference_range_high_value,
        }
      });
    }
    
    data.push({
      name: panel_name,
      code: panel_code,
      code_system: panel_code_system,
      code_system_name: panel_code_system_name,
      tests: tests_data
    });
  });
  
  return data;
};