### Must support
The meaning of the presence or absence of the must support flag is described in [Must support](guidance.html#must-support).

### Extensions
Extensions introduced in this profile:
* HealthcareService: [PCA Current Information Use Statement](StructureDefinition-pca-current-information-use-statement.html)
* HealthcareService.telecom: [PCA Description](StructureDefinition-pca-description.html)
 
### Supported interactions
Supported service interactions for this profile are defined in the following capability statements:
* For publishing systems: [PCA Publisher Agent](CapabilityStatement-pca-publisher-agent.html#healthcareservice)
* For subscribing systems: [PCA Subscriber Agent](CapabilityStatement-pca-subscriber-agent.html#healthcareservice)
