CodeSpaceX

Appearance

Tutorial - FHIR Appointment Resource ​

Background ​

Scenario ​

Make an appointment for the patient (John Thompson) from the Tutorial 02 - patient resource to the parctitioner selected in the Tutorial 04 - parctitioner resource for next Monday (09-16-2018).

Setup environment ​

  • Same to Tutorial 02

Introduction ​

Import library ​

At the beginning we need to import libraries fhirpy and os.

Also, we re-use the customise function pprint from Tutorial-02. We'll use it to display some Observation resource data structures.

py
import os
from fhirpy import AsyncFHIRClient
import os
from fhirpy import AsyncFHIRClient

Create an instance of connection ​

To load data from FHIR server we should instaniate FHIRClient class from fhirpy AsyncFHIRClient method.

Let's pass url and authorization arguments from environment.

py
client = AsyncFHIRClient(
        url='http://localhost:8080/fhir/',
        authorization='Bearer TOKEN',
    )
client = AsyncFHIRClient(
        url='http://localhost:8080/fhir/',
        authorization='Bearer TOKEN',
    )

Now, we are able to operate with FHIR resources using client.

Find participants ​

  • Find a patient whose name is John Thompson.
py
patient = await client.resources('Patient').search(name=['Jhon','Thompson']).first()
pprint(patient)
patient = await client.resources('Patient').search(name=['Jhon','Thompson']).first()
pprint(patient)
  • Find the practitioner we've choosen before. Her name is Kelly Smith.
py
practitioner = await client.resources('Practitioner').search(name=['Kelly', 'Smith']).first()
practitioner = await client.resources('Practitioner').search(name=['Kelly', 'Smith']).first()

Select date ​

py
schedule = await client.resources('Schedule').search(actor=practitioner.to_reference()).first()

pprint(schedule)
schedule = await client.resources('Schedule').search(actor=practitioner.to_reference()).first()

pprint(schedule)
  • For the schedule found choose a time slot at 11 am on Monday 16.
py
slot = await client.resources('Slot').search(
    schedule=schedule.to_reference(),
    start='2018-09-16T11:00:00'
).first()

details = (slot.get('start'), slot.get('end'), slot.get('status'))
slot = await client.resources('Slot').search(
    schedule=schedule.to_reference(),
    start='2018-09-16T11:00:00'
).first()

details = (slot.get('start'), slot.get('end'), slot.get('status'))
  • Mark selected time slot as busy
py
slot['status'] = 'busy'
await slot.save()
slot['status'] = 'busy'
await slot.save()

Appointment Resource ​

Appointment can be considerd as administrative only, and the Encounter is expected to have clinical implications. In general, it is expected that appointments will result in the creation of an Encounter. The encounter is typically created when the service starts, not when the patient arrives.

When Request/Reponse pattern is in use, a new Appointment is created with status=proposed or status=pending and the list of actors with status of needs-action. AppointmentResponse is then used by participants to respond with their acceptance (or not) to the appointment. Once all of the participants have replied, the appointment gets it's final status.

In an Emergency Room context, the appointment resource is replaced with Encounter.

To assign an Appointment to a specific date:

  • Determine address details of the resource we want to schedule appointment with.
  • Check available Slots for that time.
  • Create new Appointment resource with Appointment.status=proposed and status=needs-action for all Appointment.participants.
  • Wait for Appointment.status updates for approved or rejected appointments.

We are already agreed on the time slot. All of the addressing information is provided by the Schedule the time slot is booked for.

Let's create a new Appointment.

py
# All of the actors from Schedule
participants = [{'actor':actor, 'status':'needs-action'} for actor in schedule['actor']]

# Plus the patient

participants += [{'actor':patient.to_reference(), 'status': 'accepted'}]

# Create an Appointment
appointment = client.resource(
    'Appointment',
    status='proposed',
    start=slot['start'],
    end=slot['end'],
    slot=[slot],
    participant=participants
)

await appointment.save()

pprint(appointment)
# All of the actors from Schedule
participants = [{'actor':actor, 'status':'needs-action'} for actor in schedule['actor']]

# Plus the patient

participants += [{'actor':patient.to_reference(), 'status': 'accepted'}]

# Create an Appointment
appointment = client.resource(
    'Appointment',
    status='proposed',
    start=slot['start'],
    end=slot['end'],
    slot=[slot],
    participant=participants
)

await appointment.save()

pprint(appointment)

Find appointments ​

py
appointments = await client.resources('Appointment').search(
    patient=patient['id']
).fetch()

details = [(ap.get('id'),ap.get('start'), ap.get('end'), ap.get('status')) for ap in appointments]

print(details)
appointments = await client.resources('Appointment').search(
    patient=patient['id']
).fetch()

details = [(ap.get('id'),ap.get('start'), ap.get('end'), ap.get('status')) for ap in appointments]

print(details)

Summary ​

In this tutorial we've discussed:

  • How to book a time slot
  • How to create an Appointment
  • How to search for Appointments