Actual or potential/avoided event causing unintended physical injury resulting from or contributed to by medical care, a research study or other healthcare setting factors that requires additional monitoring, treatment, or hospitalization, or that results in death.

Business identifiers assigned to this adverse event by the performer or other systems which remain constant as the resource is updated and propagates from server to server.

Allows identification of the adverse event as it is known by various participating systems and in a way that remains consistent across servers.

This is a business identifier, not a resource identifier (see discussion ).  ). It is best practice for the identifier to only appear on a single resource instance, however business practices may occasionally dictate that multiple resource instances with the same identifier can exist - possibly even with different resource types.  types. For example, multiple Patient and a Person resource instance might share the same social insurance number.

Whether the event actually happened, or just had the potential to. Note that this is independent of whether anyone was affected or harmed or how severely.

The overall type of event, intended for search and filtering purposes.

This element defines the specific type of event that occurred or that was prevented from occurring.

This subject or group impacted by the event.

Allows for exposure of biohazard (such as legionella) to a group of individuals in a hospital.

If AdverseEvent.resultingCondition differs among members of the group, then use Patient as the subject.

The encounter or episode of care that establishes the context for this AdverseEvent.

This will typically be the encounter the AdverseEvent occurred within. For example, if a medication administration was considered an adverse event because it resulted in a rash, then the encounter when the medication administration was given is the context. If the patient reports the AdverseEvent during a second encounter, that second encounter is not the context.

The date (and perhaps time) when the adverse event occurred.

Estimated or actual date the AdverseEvent began, in the opinion of the reporter.

The date on which the existence of the AdverseEvent was first recorded.

The recordedDate represents the date when this particular AdverseEvent record was created in the system, not the date of the most recent update. The date of the last record modification can be retrieved from the resource metadata.

Includes information about the reaction that occurred as a result of exposure to a substance (for example, a drug or a chemical).

The information about where the adverse event occurred.

Assessment whether this event was of real importance.

Describes the severity of the adverse event, in relation to the subject. Contrast to AdverseEvent.serious - a severe rash might not be serious, but a mild heart problem is.

Describes the type of outcome from the adverse event.

Information on who recorded the adverse event. May be the patient or a practitioner.

Parties that may or should contribute or have contributed information to the adverse event, which can consist of one or more activities. Such information includes information leading to the decision to perform the activity and how to perform the activity (e.g. consultant), information that the activity itself seeks to reveal (e.g. informant of clinical history), or information about what activity was performed (e.g. informant witness).

Describes the entity that is suspected to have caused the adverse event.

Identifies the actual instance of what caused the adverse event. May be a substance, medication, medication administration, medication statement or a device.

Information on the possible cause of the event.

Assessment of if the entity caused the event.

AdverseEvent.suspectEntity.causalityProductRelatedness.

AdverseEvent.suspectEntity.causalityAuthor.

ProbabilityScale | Bayesian | Checklist.

AdverseEvent.subjectMedicalHistory.

AdverseEvent.referenceDocument.

AdverseEvent.study.