Overview (QUICK Data Model)

Class Summary
Class	Description
AdverseEvent	An incident, near miss, unsafe condition, or untoward occurrence during treatment.
AllergyIntolerance	Allergy or Intolerance (generally: Risk of adverse reaction to a substance)
BodySite	Specific and identified anatomical location
Claim	Claim, Pre-determination or Pre-authorization
Communication	A record of information transmitted from a sender to a receiver
CommunicationRequest	A request for information to be sent to a receiver
Condition	Detailed information about conditions, problems or diagnoses
Coverage	Insurance or medical plan or a payment agreement
Device	Item used in healthcare
DeviceUseStatement	Record of use of a device
DiagnosticReport	A Diagnostic report - a combination of request information, atomic results, images, interpretation, as well as formatted reports
Encounter	An interaction during which services are provided to the patient
FamilyMemberHistory	Information about patient's relatives, relevant for patient
Flag	Key information to flag to healthcare providers
Goal	Describes the intended objective(s) for a patient, group or organization
ImagingStudy	A set of images produced in single study (one or more series of references images)
Immunization	Immunization event information
ImmunizationRecommendation	Guidance or advice relating to an immunization
Location	Details and position information for a physical place
Medication	Definition of a Medication
MedicationAdministration	Administration of medication to a patient
MedicationDispense	Dispensing a medication to a named patient
MedicationRequest	Ordering of medication for patient or group
MedicationStatement	Record of medication being taken by a patient
Observation	Measurements and simple assertions
Organization	A grouping of people or organizations with a common purpose
Patient	Information about an individual or animal receiving health care services
Practitioner	A person with a formal responsibility in the provisioning of healthcare or related services
Procedure	An action that is being or was performed on a patient
ProcedureRequest	A request for a procedure or diagnostic to be performed
ReferralRequest	A request for referral or transfer of care
RelatedPerson	An person that is related to a patient, but who is not a direct target of care
Specimen	Sample for analysis
Substance	A homogeneous material with a definite composition

Relationship to FHIR and QI-Core

The QUICK data model uses the QI-Core profiles to provide a physical representation for the data. QUICK provides a logical model that enables knowledge authors to ignore certain details of the FHIR Physical representation, including:

The representation of primitives in FHIR using a "value" element of a complex type, rather than a true primitive
The representation of extensions in FHIR as first class elements in QUICK
Direct reference of resources, rather than needing to traverse a "reference"

To address the first issue, the QUICK model maps the FHIR base types to CQL primitives, rather than using the FHIR types directly:

FHIR Type	CQL Type
base64Binary	String
boolean	Boolean
code	String
CodeableConcept	Concept
Coding	Code
date	DateTime
dateTime	DateTime
decimal	Decimal
id	String
instant	DateTime
integer	Integer
markdown	String
oid	String
Period	Interval<DateTime>
positiveInt	Integer
Range	Interval<Quantity>
string	String
time	Time
uri	String

To address the second issue, the QUICK model represents FHIR extensions as first-class attributes of the class. To address the third issue, the QUICK model represents FHIR references as direct appearances of the referenced class or classes. NOTE: The third issue is still being worked out, so current QUICK documentation still uses the Reference type to model references.