Medication management is one of the most complex issues in health care computing, particularly in the distributed computing environment that openEHR aims to support. Illustrations of this complexity include:
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The proposed actions that might be recorded against a medication order are:
| Plan |
| The medication is planned but no execution has taken place. | Current state: initial |
| Plan suspended |
| The plan to order medication has been suspended. | Current state: postponed |
| Cancelled order |
| The planned administration has been cancelled prior to any administration. | Current state: cancelled |
| Start time set |
| The time to start this medication has been set. | Current state: scheduled |
| Issue item prescription |
| The order has been transfered to the dispensary. | Current state: active, initial |
| Dispense medication item |
| The medication has been dispensed. | Current state: active, initial |
| Commence medication item administration |
| The medication has been taken by the patient for the first time. | Current state: active |
| Review medication item |
| The medication has been reviewed. | Current state: active |
| Administer medication item |
| A single administration of the medication has taken place. | Current state: active |
| Re-issue item prescription |
| The medication has been re-prescribed for an existing order. | Current state: active |
| Medication item withheld |
| The administration of a medication has been withheld and not given. | Current state: active |
| Medication item refused |
| An administration of the medication was refused by the patient. | Current state: active |
| Reverse item dispense |
| A dispensed medication is returned or not collected without use. | Current state: active, initial |
| Delayed supply |
| The medication has not been dispensed as supply is not yet available. | Current state: suspended |
| Suspended administration |
| The administration of the medication has been suspended. | Current state: suspended |
| Suspended re-order |
| Reordering of this medication is not available. | Current state: suspended |
| Administration ceased |
| The administration of this medication has been ceased before anticipated completion. | Current state: aborted |
| Reverse prescription |
| The prescription has been cancelled but administration or dispensing may have occurred. | Current state: aborted |
| Completed |
| The medication has been completed as prescribed. | Current state: completed |
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