This Recommendation specifies design guidelines for the Questionnaire enabled AHD and Questionnaire enabled WAN CDCs that shall be followed. The design guidelines specify the testable requirements that must be implemented by the AHD in order to classify it as a Questionnaire enabled AHD. The Questionnaire enabled AHD shall be able to retrieve questionnaires from the WAN device and be able to validate that those questionnaires conform to the HL7 CDA R2 IG for QFD documents [HL7 CDA QFD]. In addition@ the design guidelines specify testable requirements for a WAN device which details how a Questionnaire enabled WAN device shall respond to the requests from a Questionnaire enabled AHD and shall be able to validate that the QR documents conform to the HL7 CDA R2 IG for QR documents [HL7 CDA QFD].