Chained searches allow resources to be retrieved based on a business identifier for the individual

[Dunmail]

FHIR supports the concept of chained searches. These could be used to search based on a business identifier such as a national number or a PAS number.

For example: GET [base]/MedicationStatement?patient.identifier=https://fhir.nhs.uk/Id/nhs-number|9912003888

This would be a courtesy method for consumers but may be more complex for providers to implement. As the same outcome can be achieved using 2 searches, this will not be included within MVP.