| Code | Display | Definition |
| consent | Consent | An assertion of permission for an activity or set of activities to occur, possibly subject to particular limitations; e.g. surgical consent, information disclosure consent, etc. |
| referral | Referral | A request that care of a particular type be provided to a patient. Could involve the transfer of care, a consult, etc. |
| advevent | Adverse Event | An undesired reaction caused by exposure to some agent (e.g. a medication, immunization, food, or environmental agent). |
| aptmtreq | Appointment Request | A request that a time be scheduled for a type of service for a specified patient, potentially subject to other constraints |
| transfer | Transfer | The transition of a patient or set of material from one location to another |
| diet | Diet | The specification of a set of food and/or other nutritional material to be delivered to a patient. |
| adminact | Administrative Activity | An occurrence of a non-care-related event in the healthcare domain, such as approvals, reviews, etc. |
| exposure | Exposure | Record of a situation where a subject was exposed to a substance. Usually of interest to public health. |
| investigation | Investigation | A formalized inquiry into the circumstances surrounding a particular unplanned event or potential event for the purposes of identifying possible causes and contributing factors for the event |
| account | Account | A financial instrument used to track costs, charges or other amounts. |
| invoice | Invoice | A request for payment for goods and/or services. Includes the idea of a healthcare insurance claim. |
| adjudicat | Invoice Adjudication | The determination of what will be paid against a particular invoice based on coverage, plan rules, etc. |
| predetreq | Pre-determination Request | A request for a pre-determination of the cost that would be paid under an insurance plan for a hypothetical claim for goods or services |
| predetermine | Predetermination | An adjudication of what would be paid under an insurance plan for a hypothetical claim for goods or services |
| study | Study | An investigation to determine information about a particular therapy or product |
| protocol | Protocol | A set of (possibly conditional) steps to be taken to achieve some aim. Includes study protocols, treatment protocols, emergency protocols, etc. |