@startuml
hide footbox
title Patient Demographics Query
participant PDC as "PDC\n(SUT)" 
participant PDS as "PDS\n(Patient Manager)" #99FF99

group ITI-21 Patient Demographics Query
PDC -> PDS: QBP^Q22^QBP_Q21
activate PDS
PDS --> PDC: RSP^K22^RSP_K21
deactivate PDS
PDC -> PDS: QCN^J01^QCN_J01
activate PDS
PDS --> PDC: ACK^J01^ACK
deactivate PDS
end

group ITI-22 Patient Demographic and Visit Query
PDC -> PDS: QBP^ZV1^QBP_Q21
activate PDS
PDS --> PDC: RSP^ZV2^RSP_K21
deactivate PDS
PDC -> PDS: QCN^J01^QCN_J01
activate PDS
PDS --> PDC: ACK^J01^ACK
deactivate PDS
end
@enduml