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  * MSH = 
    file:///home/fxkris/Downloads/pramita/HL7CHP2.pdf
    page 49
  * PID =  Patient Identification 
    file:///home/fxkris/Downloads/pramita/HL7CHP3.pdf
    page 28
  * PV1 =  ( Patient Visit )
    file:///home/fxkris/Downloads/pramita/HL7CHP3.pdf
    page 33
  * ORC = Common Order Segment
    file:///home/fxkris/Downloads/pramita/HL7CHP4.pdf
    page 6
    
  * OBR = Order Detail Segment 
    file:///home/fxkris/Downloads/pramita/HL7CHP4.pdf
    page 31
    
  * OBX = Observation Segment
    file:///home/fxkris/Downloads/pramita/HL7CHP7.pdf
    page 28
  * ZDS =