How would you format a nested for loop to operate on a group of HL7 message segments?

Question

Some HL7 messages have repeating segment groups. Within QIE how would you structure your code to iterate over these repeating groups?

Answer 1

The example below show all of the segment groups (ORC, OBR, NTE, OBX, NTE) for an ORU HL7 message and how you would structure you code or for loop to iterate over the segments.

var orcGroups = message.getAllNodes('ORC[group=!ORC]');

for (var i = 0; i < orcGroups.length; i++) {

   var orcGroup = qie.parseHL7String(orcGroups[i]);

   var orc = qie.parseHL7String(orcGroup.getNode('ORC'));

 

   //DO OPTIONAL WORK HERE

 

   var obrGroups = orcGroup.getAllNodes('OBR[group=!OBR]');

   for (var j = 0; j < obrGroups.length; j++) {

      var obrGroup = qie.parseHL7String(obrGroups[j]);

      var obr = qie.parseHL7String(obrGroup.getNode('OBR'));

 

      //DO OPTIONAL WORK HERE

 

      var nteGroups = obrGroup.getAllNodes('NTE[group=!NTE]');

      for (var k = 0; k < nteGroups.length; k++) {

         var nteGroup = qie.parseHL7String(nteGroups[k]);

         var nte = qie.parseHL7String(nteGroup.getNode('NTE'));

 

         //DO OPTIONAL WORK HERE

 

         var obxGroups = nteGroup.getAllNodes('OBX[group=!OBX]');

         for (var l = 0; l < obxGroups.length; l++) {

            var obxGroup = qie.parseHL7String(obxGroups[l]);

            var obx = qie.parseHL7String(obxGroup.getNode('OBX'));

 

            //DO OPTIONAL WORK HERE

 

            var nteGroups = obxGroup.getAllNodes('NTE[group=!NTE]');

            for (var m = 0; m < nteGroups.length; m++) {

               var nteGroup = qie.parseHL7String(nteGroups[m]);

               var nte = qie.parseHL7String(nteGroup.getNode('NTE'));

 

               //DO OPTIONAL WORK HERE

 

            }

         }

      }

   }

}

 

 

 

Refer to this knowledge base article on how to process the new segment objects using the QIE Message Functions.

https://www.qvera.com/kb/index.php/824/how-can-create-my-own-custom-hl7-xml-csv-message-model-object