### Use Case Category: Search Medication Dispense This describes the use case category for searching for medication dispense information, based on a patient’s Health Card Number (HCN), and optional search criteria. Please note that in the current release, HCN is the only patient identifier supported for searches, but in the future releases, multiple identifier types might be allowed as query parameters, e.g. a consuming system might get all identifiers associated with a patient from the Provincial Client Registry or from a local EMPI and then search DHDR for all dispenses of a patient using these identifiers. Search Types: Search by HCN Scenario Details: The User of the client application requests retrieval of medication dispense information, using only the HCN and optional pre-defined search criteria as query parameters. Message Flow: