# Extensions - ACT-NOW Implementation Guide v0.5.0

* [**Table of Contents**](toc.md)
* **Extensions**

## Extensions

**Extensions defined in this guide**

| | | | | |
| :--- | :--- | :--- | :--- | :--- |
| Id | Canonical url | Context of Use | Description | Purpose |
| [an-clinical-trial](StructureDefinition-an-clinical-trial.md) | http://canshare.co.nz/fhir/StructureDefinition/an-clinical-trial | * CarePlan
 | Is on a clinical trial |  |
| [an-course-number](StructureDefinition-an-course-number.md) | http://canshare.co.nz/fhir/StructureDefinition/an-course-number | * CarePlan
 | The course number (sequential number) for this regimen |  |
| [an-cycle-count](StructureDefinition-an-cycle-count.md) | http://canshare.co.nz/fhir/StructureDefinition/an-cycle-count | * CarePlan
 | The number of cycles that administered for a regimen |  |
| [an-cycle-day](StructureDefinition-an-cycle-day.md) | http://canshare.co.nz/fhir/StructureDefinition/an-cycle-day | * MedicationAdministration
 | The day of the cycle that this medication was given on. Includes planned day and administered day. Not the same as intended cycle length. |  |
| [an-cycle-number](StructureDefinition-an-cycle-number.md) | http://canshare.co.nz/fhir/StructureDefinition/an-cycle-number | * CarePlan
 | The cycle number of the regimen that this CP represents |  |
| [an-cycle-planned-length](StructureDefinition-an-cycle-planned-length.md) | http://canshare.co.nz/fhir/StructureDefinition/an-cycle-planned-length | * CarePlan
 | The number of cycles that administered for a regimen |  |
| [an-dose-adjustment-reason](StructureDefinition-an-dose-adjustment-reason.md) | http://canshare.co.nz/fhir/StructureDefinition/an-dose-adjustment-reason | * MedicationAdministration
 | The reason why the dose given was not the same as that in the regimen |  |
| [an-facility-administered](StructureDefinition-an-facility-administered.md) | http://canshare.co.nz/fhir/StructureDefinition/an-facility-administered | * MedicationAdministration
 | The facility where the medication was given. The HPI code of the facility |  |
| [an-iot](StructureDefinition-an-iot.md) | http://canshare.co.nz/fhir/StructureDefinition/an-iot | * CarePlan
 | Intent of treatment |  |
| [an-last-admin-date](StructureDefinition-an-last-admin-date.md) | http://canshare.co.nz/fhir/StructureDefinition/an-last-admin-date | * CarePlan
 | The last date that a medication administration was made for this cycle |  |
| [an-prescribed-dose](StructureDefinition-an-prescribed-dose.md) | http://canshare.co.nz/fhir/StructureDefinition/an-prescribed-dose | * MedicationAdministration
 | The dose of this medication in the regimen (may not be the same as that given |  |
| [an-recurrence-type](StructureDefinition-an-recurrence-type.md) | http://canshare.co.nz/fhir/StructureDefinition/an-recurrence-type | * Condition
 | Recurrence type |  |
| [an-regimen-discontinued](StructureDefinition-an-regimen-discontinued.md) | http://canshare.co.nz/fhir/StructureDefinition/an-regimen-discontinued | * CarePlan
 | Reasons why a regimen may have been discontinued |  |
| [an-regimen-otu](StructureDefinition-an-regimen-otu.md) | http://canshare.co.nz/fhir/StructureDefinition/an-regimen-otu | * CarePlan
 | Overall Treatment Utility measure for a regimen after it has completed. |  |
| [sact-regimen-type](StructureDefinition-sact-regimen-type.md) | http://hl7.org.nz/fhir/StructureDefinition/sact-regimen-type | * PlanDefinition
* CarePlan
 | The overall type of the regimen - eg FOLFOX |  |

