Use Case Diagram

11.1.2 Pharmacy - Events
Use Case Diagram Health Service Event #1 – Prescription execution Event Diagram

Actors

Patient’s mother
Pharmacist
Pharmacy’s information system (POS)
EHRi systems

Assumptions

There is one jurisdiction involved (e.g. the jurisdiction where the visit takes place is the same as that where the patient lives); also, there is one (minimum) EHR.
The pharmacist is already logged on the Pharmacy’s information system.
The pharmacist requests only the prescriptions for the current jurisdiction and a specific patient; the pharmacist uses a jurisdictional pharmacy system (domain) and the Drug events are only indexed in the EHR.
To resolve the patient’s identification, the provincial health care number is also used, because it is key information to find the patient. In this case, the pharmacist uses the following key information to find the patient: name, birth date, and provincial health care number.
The resolution of the patient’s identification information is also necessary to obtain a “temporary” unique patient identifier from the EHR, to allow the user to view and update the patient’s record. The “temporary” unique patient identifier (EHRi Transaction Client ID) is provided by the EHRi only for one user session (without a break in the time), for the same patient and the same provider (person) who are engaged in the health service event. If there is an interruption during a health service, this becomes another health service event, and another resolution of the patient’s identification is required to obtain another “temporary” unique patient identifier (EHRi Transaction Client ID).

Workflow Event Step	POS Action	EHRi System Action	EHR IP reference
The patient’s mother has gone to the pharmacy to pick up the medication.
The patient’s mother informs the pharmacist she is there to obtain the prescription for son and that she has used that pharmacy for him in the past.
Resolution of patient’s identification (in the current jurisdiction)
The pharmacist enters in the pharmacy’s information system the patient’s identification information.	The POS Pharmacy’s information system sends, to the EHRi system, a request with the key information (ex. name, birth date, provincial health care number) (and to obtain a EHRi Transaction Client ID).	The EHRi system searches the client, in the current jurisdiction, with the provided key information (ex. name, birth date, provincial health care number) and finds the client.	EHRIP10 Search Patient
		The EHRi System Client Registry returns, to POS system, the corresponding patient record (with a EHRi Transaction Client ID).
	The POS Pharmacy’s information system displays the corresponding record of current patient.
Update of patient’s demographic information (in the current jurisdiction)
The pharmacist confirms the patients’ identity with the patient’s mother and searches the demographic information through the pharmacy’s information system.	The POS Pharmacy’s information system sends, to EHRi system, a search request to find the demographic information for the current patient (for the EHRi Transaction Client ID).	The EHRi system searches and finds the demographic information for the current patient (for the EHRi Transaction Client ID).	EHRIP03 Get Patient Demographic Data
		The EHRi system returns, to POS system, the demographic information for the current patient (for the EHRi Transaction Client ID).
	The POS Pharmacy’s information system receives and displays the demographic information.
The pharmacist reviews the demographic information with the patient’s mother: - Address, - Phone number, - Email, - Insurance plan.
The patient’s mother realizes she has forgotten to inform the pharmacy (and others) of their recent move within the city. She provides their new address.
The pharmacist records this information in the pharmacy’s information system.	The POS Pharmacy’s information system sends, to EHRi system, an update request to add the new demographic information for the current patient (for the EHRi Transaction Client ID).	The EHRi system adds the new demographic information for the current patient (for the EHRi Transaction Client ID).	EHRIP04 Put Patient Demographic Data
		The EHRi system returns, to POS system, an acknowledgment that the update request is completed.
	The POS Pharmacy’s information system displays an acknowledgment about the completed update request.
View specific event (prescription) (in the current jurisdiction)
The pharmacist enters a request (with criteria) in the pharmacy’s information system to search the patient’s prescription.	The POS Pharmacy’s information system searchs the prescriptions for the current patient (for the EHRi Transaction Client ID).
	The POS Pharmacy’s information system displays the prescription for the current patient.
Prescription execution (in the current jurisdiction)
The pharmacist obtains patient’s prescription for the antibiotic and dispenses it.
The pharmacist makes a record of the encounter in the pharmacy’s information system: - Medication, - Dose, - Quantity, - Refills.	The POS Pharmacy’s information system adds the dispense event for the corresponding prescription and the current patient (for the EHRi Transaction Client ID) in the current jurisdiction.	The EHRi system indexes the dispense event (for the EHRi Transaction Client ID).	EHRIP 19 Index Event (Event Type = Prescription Event)
		The EHRi system returns an acknowledgment to POS system that the update request is completed.
	The POS Pharmacy’s information system displays an acknowledgment about the completed update request.

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General Info
Name	Health Service Event #1 – Prescription execution Event Diagram
Type	Use Case Diagram