PDS FHIR API - verify NHS Number (cross-check trace)
The PDS FHIR API currently supports search (not using NHS Number) and retrieve (using only NHS Number). Either of these can be used to verify an NHS Number is correct, but puts the onus on the calling application to do so. Previous PDS APIs (HL7 V3, SMSP) provide a "cross-check trace" which allows a calling application to provide an NHS Number and some personal details for the patient and have a yes/no response. The scope of this feature is to add that capability to the PDS FHIR API.