Confirmation

Using extensions

You can use any extension by treating them as a regular field in a resource.

In the following example you can see how to create, require and use an extension:

Define an extension:

middlename[Extension]:
  url: http://acme.nl/middlename
  .value[string]: 
    max: 1

Define a derived profile of Patient:

dutch-patient[Patient]:
  url: http://acme.nl/dutch-patient
  .extension:middelname:
    max: 1

Create a Patient resource based on the profile and using the extension:

dutch-patient/3:
  name: 
    family: Doe 
    middlename: van der